Android - how do I detect what is crashing my app? [closed]

Android - how do I detect what is crashing my app? [closed] - java

Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 8 years ago.
Improve this question
so I have this problem and I think code should work, but it doesnt. It crashed the app at it's start.
Logcat doesnt seem to help so how do I detect what is crashing my app?
Here is the code of my app if someone would like to check error or something
http://www23.zippyshare.com/v/472319/file.html
Here is MainActivity.java
package com.example.sqllite;
import java.util.ArrayList;
import com.example.kontaktysqllite.R;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends ListActivity{
private ProgressDialog m_ProgressDialog = null;
private ArrayList<Order> m_orders = null;
private OrderAdapter m_adapter;
private Runnable viewOrders;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
m_orders = new ArrayList<Order>();
this.m_adapter = new OrderAdapter(this, R.layout.row, m_orders);
setListAdapter(this.m_adapter);
viewOrders = new Runnable(){
#Override
public void run() {
getOrders();
}
};
Thread thread = new Thread(null, viewOrders, "MagentoBackground");
thread.start();
m_ProgressDialog = ProgressDialog.show(MainActivity.this,
"Please wait...", "Retrieving data ...", true);
}
private Runnable returnRes = new Runnable() {
#Override
public void run() {
if(m_orders != null && m_orders.size() > 0){
m_adapter.notifyDataSetChanged();
for(int i=0;i<m_orders.size();i++)
m_adapter.add(m_orders.get(i));
}
m_ProgressDialog.dismiss();
m_adapter.notifyDataSetChanged();
}
};
private void getOrders(){
try{
final ZarzadcaBazy zb = new ZarzadcaBazy(this);
m_orders = new ArrayList<Order>();
Cursor k = zb.dajWszystkie();
while (k.moveToNext()) {
String message = k.getString(1);
Order order = new Order();
order.setOrderLink(message);
order.setOrderName("szablon");
m_orders.add(order);
Log.i("ARRAY", ""+ m_orders.size());
}
} catch (Exception e) {
Log.e("BACKGROUND_PROC", e.getMessage());
}
runOnUiThread(returnRes);
}
private class OrderAdapter extends ArrayAdapter<Order> {
private ArrayList<Order> items;
public OrderAdapter(Context context, int textViewResourceId, ArrayList<Order> items) {
super(context, textViewResourceId, items);
this.items = items;
}
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
View v = convertView;
if (v == null)
{
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.row, null);
}
Order o = items.get(position);
if (o != null)
{
TextView name = (TextView) v.findViewById(R.id.row_textView);
ImageView img = (ImageView)findViewById(R.id.row_imageview);
if (name != null)
{
name.setText("Name: "+o.getOrderName());
}
img.setOnClickListener(new View.OnClickListener()
{
public void onClick(View view)
{
Intent intent = new Intent(MainActivity.this, Activity2.class);
intent.putExtra("urlString", "https://beta2.createer.com/Action/Show/777203e8-5b53-462d-863b-c4e10a3abd5b/");
startActivity(intent);
}
});
}
return v;
}
}
}
Logcat:
09-04 14:56:37.244: I/Process(579): Sending signal. PID: 579 SIG: 9
09-04 14:56:37.374: W/ApplicationPackageManager(868): getCSCPackageItemText()
09-04 14:56:37.424: D/AbsListView(868): Get MotionRecognitionManager
09-04 14:56:37.444: D/AbsListView(868): onVisibilityChanged() is called, visibility : 8
09-04 14:56:37.444: D/AbsListView(868): unregisterIRListener() is called
09-04 14:56:37.464: I/ARRAY(868): 1
09-04 14:56:37.464: I/ARRAY(868): 2
09-04 14:56:37.464: I/ARRAY(868): 3
09-04 14:56:37.494: D/AbsListView(868): onVisibilityChanged() is called, visibility : 4
09-04 14:56:37.494: D/AbsListView(868): unregisterIRListener() is called
09-04 14:56:37.494: D/AbsListView(868): onVisibilityChanged() is called, visibility : 0
09-04 14:56:37.494: D/AbsListView(868): unregisterIRListener() is called
09-04 14:56:37.494: D/AbsListView(868): unregisterIRListener() is called
09-04 14:56:37.504: D/AbsListView(868): onVisibilityChanged() is called, visibility : 0
09-04 14:56:37.504: D/AbsListView(868): unregisterIRListener() is called
09-04 14:56:37.504: E/ViewRootImpl(868): sendUserActionEvent() mView == null
09-04 14:56:37.504: D/AbsListView(868): unregisterIRListener() is called
09-04 14:56:37.524: I/Adreno-EGL(868): <qeglDrvAPI_eglInitialize:381>: EGL 1.4 QUALCOMM build: (CL3869936)
09-04 14:56:37.524: I/Adreno-EGL(868): OpenGL ES Shader Compiler Version: 17.01.11.SPL
09-04 14:56:37.524: I/Adreno-EGL(868): Build Date: 01/17/14 Fri
09-04 14:56:37.524: I/Adreno-EGL(868): Local Branch:
09-04 14:56:37.524: I/Adreno-EGL(868): Remote Branch:
09-04 14:56:37.524: I/Adreno-EGL(868): Local Patches:
09-04 14:56:37.524: I/Adreno-EGL(868): Reconstruct Branch:
09-04 14:56:37.574: D/OpenGLRenderer(868): Enabling debug mode 0
09-04 14:56:37.715: D/dalvikvm(868): GC_FOR_ALLOC freed 204K, 34% free 17536K/26476K, paused 16ms, total 16ms
09-04 14:56:37.745: I/dalvikvm-heap(868): Grow heap (frag case) to 39.227MB for 18924856-byte allocation
09-04 14:56:37.745: W/SQLiteConnectionPool(868): A SQLiteConnection object for database '+data+data+com_example_kontaktysqllite+databases+kontakty_db' was leaked! Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
09-04 14:56:37.785: D/AndroidRuntime(868): Shutting down VM
09-04 14:56:37.785: W/dalvikvm(868): threadid=1: thread exiting with uncaught exception (group=0x418e7da0)
09-04 14:56:37.805: E/AndroidRuntime(868): FATAL EXCEPTION: main
09-04 14:56:37.805: E/AndroidRuntime(868): Process: com.example.kontaktysqllite, PID: 868
09-04 14:56:37.805: E/AndroidRuntime(868): java.lang.NullPointerException
09-04 14:56:37.805: E/AndroidRuntime(868): at com.example.sqllite.MainActivity$OrderAdapter.getView(MainActivity.java:109)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.AbsListView.obtainView(AbsListView.java:2715)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.ListView.makeAndAddView(ListView.java:1801)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.ListView.fillDown(ListView.java:697)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.ListView.fillFromTop(ListView.java:763)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.ListView.layoutChildren(ListView.java:1627)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.AbsListView.onLayout(AbsListView.java:2528)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.View.layout(View.java:15655)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewGroup.layout(ViewGroup.java:4856)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1677)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.View.layout(View.java:15655)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewGroup.layout(ViewGroup.java:4856)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.View.layout(View.java:15655)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewGroup.layout(ViewGroup.java:4856)
09-04 14:56:37.805: E/AndroidRuntime(868): at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:438)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.View.layout(View.java:15655)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewGroup.layout(ViewGroup.java:4856)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.View.layout(View.java:15655)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewGroup.layout(ViewGroup.java:4856)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2283)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2003)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1235)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6470)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.Choreographer.doCallbacks(Choreographer.java:603)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.Choreographer.doFrame(Choreographer.java:573)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.os.Handler.handleCallback(Handler.java:733)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.os.Handler.dispatchMessage(Handler.java:95)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.os.Looper.loop(Looper.java:157)
09-04 14:56:37.805: E/AndroidRuntime(868): at android.app.ActivityThread.main(ActivityThread.java:5356)
09-04 14:56:37.805: E/AndroidRuntime(868): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 14:56:37.805: E/AndroidRuntime(868): at java.lang.reflect.Method.invoke(Method.java:515)
09-04 14:56:37.805: E/AndroidRuntime(868): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
09-04 14:56:37.805: E/AndroidRuntime(868): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
09-04 14:56:37.805: E/AndroidRuntime(868): at dalvik.system.NativeStart.main(Native Method)

You are getting NullPointerException on
ImageView img = (ImageView)findViewById(R.id.row_imageview);
Please use
ImageView img = (ImageView)v.findViewById(R.id.row_imageview);
as img is in View v same as TextView name.
Hope this helps.

Related

read txt file into 2d array force exit

firstly i am sorry for my broken english. I wanna read txt file and into 2d array. this code is succesfully running on java. but android emulator gives warning message: "Sorry! the application has stopped unexpectedly. please try again"
how can I fix that? thanks
here is my code:
package com.example.hocam;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class Konular extends ActionBarActivity {
private ListView konuListe;
private List<KonuBilgileri> konuBilgileri;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_konular);
Bundle dersadi = getIntent().getExtras();
String dersinadi= dersadi.getString("Ders");
switch(dersinadi) {
case "Turkce":
KonuGetir turkce=new KonuGetir("turkce.txt");
String[][] turkcekonular=turkce.getKonular();
System.out.println(turkcekonular[0][0]); // it is the problem and give error
konuListe = (ListView) findViewById(R.id.konu_listesi);
konuBilgileri = new ArrayList<KonuBilgileri>();
konuBilgileri.add(new KonuBilgileri(turkcekonular[0][0],R.drawable.turkce, turkcekonular[0][1])); // array is problem
MyAdapter adapter = new MyAdapter(Konular.this, R.layout.custom_list_item, konuBilgileri);
konuListe.setAdapter(adapter);
break;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.konular, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class KonuGetir {
final int maxLines = 10100;
String[][] resultArray = new String[maxLines][];
public KonuGetir(String Ders){
File file = new File(Ders);
Scanner scanner;
try {
scanner = new Scanner(file,"utf-8");
int linesCounter = 0;
while (scanner.hasNextLine() && linesCounter < maxLines) {
resultArray[linesCounter] = scanner.nextLine().split("#");
linesCounter++;
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String[][] getKonular() {
return resultArray;
}
}
logfile:
> 09-04 16:18:22.262: E/AndroidRuntime(1164): FATAL EXCEPTION: main
09-04 16:18:22.262: E/AndroidRuntime(1164): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hocam/com.example.hocam.Konular}: java.lang.NullPointerException
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.os.Handler.dispatchMessage(Handler.java:99)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.os.Looper.loop(Looper.java:123)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-04 16:18:22.262: E/AndroidRuntime(1164): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 16:18:22.262: E/AndroidRuntime(1164): at java.lang.reflect.Method.invoke(Method.java:521)
09-04 16:18:22.262: E/AndroidRuntime(1164): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-04 16:18:22.262: E/AndroidRuntime(1164): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-04 16:18:22.262: E/AndroidRuntime(1164): at dalvik.system.NativeStart.main(Native Method)
09-04 16:18:22.262: E/AndroidRuntime(1164): Caused by: java.lang.NullPointerException
09-04 16:18:22.262: E/AndroidRuntime(1164): at com.example.hocam.Konular.onCreate(Konular.java:66)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-04 16:18:22.262: E/AndroidRuntime(1164): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-04 16:18:22.262: E/AndroidRuntime(1164): ... 11 more
09-04 16:42:10.422: E/AndroidRuntime(1178): FATAL EXCEPTION: main
09-04 16:42:10.422: E/AndroidRuntime(1178): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hocam/com.example.hocam.Konular}: java.lang.NullPointerException
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.os.Handler.dispatchMessage(Handler.java:99)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.os.Looper.loop(Looper.java:123)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-04 16:42:10.422: E/AndroidRuntime(1178): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 16:42:10.422: E/AndroidRuntime(1178): at java.lang.reflect.Method.invoke(Method.java:521)
09-04 16:42:10.422: E/AndroidRuntime(1178): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-04 16:42:10.422: E/AndroidRuntime(1178): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-04 16:42:10.422: E/AndroidRuntime(1178): at dalvik.system.NativeStart.main(Native Method)
09-04 16:42:10.422: E/AndroidRuntime(1178): Caused by: java.lang.NullPointerException
09-04 16:42:10.422: E/AndroidRuntime(1178): at com.example.hocam.Konular.onCreate(Konular.java:66)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-04 16:42:10.422: E/AndroidRuntime(1178): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-04 16:42:10.422: E/AndroidRuntime(1178): ... 11 more
09-04 16:43:28.802: E/AndroidRuntime(1207): FATAL EXCEPTION: main
09-04 16:43:28.802: E/AndroidRuntime(1207): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hocam/com.example.hocam.Konular}: java.lang.NullPointerException
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.os.Handler.dispatchMessage(Handler.java:99)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.os.Looper.loop(Looper.java:123)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-04 16:43:28.802: E/AndroidRuntime(1207): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 16:43:28.802: E/AndroidRuntime(1207): at java.lang.reflect.Method.invoke(Method.java:521)
09-04 16:43:28.802: E/AndroidRuntime(1207): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-04 16:43:28.802: E/AndroidRuntime(1207): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-04 16:43:28.802: E/AndroidRuntime(1207): at dalvik.system.NativeStart.main(Native Method)
09-04 16:43:28.802: E/AndroidRuntime(1207): Caused by: java.lang.NullPointerException
09-04 16:43:28.802: E/AndroidRuntime(1207): at com.example.hocam.Konular.onCreate(Konular.java:66)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-04 16:43:28.802: E/AndroidRuntime(1207): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-04 16:43:28.802: E/AndroidRuntime(1207): ... 11 more
android manifest file:
<uses-permission android:name="android.permission.INTERNET" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".YGS"
android:label="#string/title_activity_ygs" >
</activity>
<activity
android:name=".Konular"
android:label="#string/title_activity_konular" >
</activity>
<activity
android:name=".Video"
android:screenOrientation="landscape"
android:label="#string/title_activity_video" >
</activity>
</application>

You are using the following code:
String[][] turkcekonular=turkce.getKonular();
System.out.println(turkcekonular[0][0]);
But get java.lang.NullPointerException.
The reason for this because getKonular() returns an array initalised to size 10100, however scanner does not contain any lines so scanner.hasNextLine() is false.
This means that turkcekonular[0] is null, as it was never set.
Which means that turkcekonular[0][0] is trying to access a null object, so throws a NullPointerException
You should check if the object is null before trying to access it..
if(turkcekonular[0] != null)
System.out.println(turkcekonular[0][0]);
and else where that this issue occurs.
(and you should figure out why your file is not read. Is it named correctly and exists in the specified path?)

Array Adapter Load Images from Res Folder (Android App)

Am an Android newbiew. Am trying to load a bunch of images in my res/Drawable folder into a Gridview via an array adapter. unfortunately my the app crashes each time i try to view the activity with the gridView. i would like to know how to set the imageResource of image i have in the res folder to display in the Gridview.
here is my Code:
Smile.class
public class Smiley extends Activity {
GridView gridView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.smile);
gridView = (GridView) findViewById(R.id.gridView1);
String planets[] = this.getResources().getStringArray(R.array.imageme);
ArrayAdapter<String>adapter = new ArrayAdapter<String> (this,R.layout.grid_view_row,R.id.imageGrid , planets);
gridView.setAdapter(adapter);
}
}
Smile.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/blurred"
>
<GridView
android:id="#+id/gridView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
>
</GridView>
</RelativeLayout>
grid_view_row.xml (Custom layout for the Gridview)
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ImageView
android:id="#+id/imageGrid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="2dp"
android:src="#drawable/a"
/>
</FrameLayout>
My String Array(xml)
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="imageme">
<item>#drawable/a</item>
<item>#drawable/b</item>
<item>#drawable/c</item>
<item>#drawable/d</item>
</string-array>
</resources>
Logcat
09-04 16:48:40.561: E/ArrayAdapter(25938): You must supply a resource ID for a TextView
09-04 16:48:40.568: E/AndroidRuntime(25938): FATAL EXCEPTION: main
09-04 16:48:40.568: E/AndroidRuntime(25938): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.AbsListView.obtainView(AbsListView.java:2207)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.GridView.onMeasure(GridView.java:1040)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.View.measure(View.java:15609)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:645)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:425)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.View.measure(View.java:15609)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4916)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.View.measure(View.java:15609)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.LinearLayout.measureVertical(LinearLayout.java:850)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.View.measure(View.java:15609)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4916)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-04 16:48:40.568: E/AndroidRuntime(25938): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2203)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.View.measure(View.java:15609)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2165)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1249)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1443)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1139)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4879)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.Choreographer.doCallbacks(Choreographer.java:579)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.Choreographer.doFrame(Choreographer.java:548)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.os.Handler.handleCallback(Handler.java:725)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.os.Handler.dispatchMessage(Handler.java:92)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.os.Looper.loop(Looper.java:153)
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.app.ActivityThread.main(ActivityThread.java:5297)
09-04 16:48:40.568: E/AndroidRuntime(25938): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 16:48:40.568: E/AndroidRuntime(25938): at java.lang.reflect.Method.invoke(Method.java:511)
09-04 16:48:40.568: E/AndroidRuntime(25938): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
09-04 16:48:40.568: E/AndroidRuntime(25938): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
09-04 16:48:40.568: E/AndroidRuntime(25938): at dalvik.system.NativeStart.main(Native Method)
09-04 16:48:40.568: E/AndroidRuntime(25938): Caused by: java.lang.ClassCastException: android.widget.ImageView cannot be cast to android.widget.TextView
09-04 16:48:40.568: E/AndroidRuntime(25938): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:382)
09-04 16:48:40.568: E/AndroidRuntime(25938): ... 35 more
please help.Thanks

Problem is that you try to assign String-type data to ImageView.
The easiest way to fix it would be:
Change resource array type to integer-array
Instead of using simple ArrayAdapter with string data, use custom adapter like:
class ImgAdapter extends BaseAdapter {
#Override
public int getCount() {
return planets.length;
}
#Override
public Integer getItem(final int position) {
return planets[position];
}
#Override
public long getItemId(final int position) {
return position;
}
#Override
public View getView(final int position, final View convertView, final ViewGroup parent) {
final View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.grid_view_row, null);
ImageView imageView = (ImageView) view.findViewById(R.id.imageGrid);
imageView.setImageResource(getItem(position));
return view;
}
}
That is simple it. Last thing is to set new adapter to gridView

The specific answer to your issue is your constructor for your adapter is:
(this,R.layout.grid_view_row,R.id.imageGrid , planets);
R.layout.grid_view_row needs to be an xml file with only a TextView. It can't be wrapped in anything else like a LinearLayout or RelativeLayout. So you would need:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
//attributes
/>
However, If you want to load images into a GridView I would recommend using an "image adapter" that extends BaseAdapter and then get the images from there. Very similar to this example:
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
// create a new ImageView for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) { // if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
// references to your images
private Integer[] mThumbIds = {
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7,
R.drawable.sample_0, R.drawable.sample_1,
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7,
R.drawable.sample_0, R.drawable.sample_1,
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7
};
}
where getView sets how the grid should look and mThumbIds is an Array of every picture that you want. From here in the Activity that you want to display the GridView in just add the code:
gridview.setAdapter(new ImageAdapter(this));

AChartEngine - Charts with data from parse.com won't display

I would like to create applications forming charts based on data from parse.com. I have read some examples and tutorials but still have problem with displaying charts. Below is my code:
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.util.Log;
import com.parse.GetCallback;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import org.achartengine.ChartFactory;
import org.achartengine.GraphicalView;
import org.achartengine.chart.PointStyle;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.model.XYSeries;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;
import java.util.ArrayList;
public class LineGraph {
public ArrayList<Integer> dataArray;
XYMultipleSeriesDataset dataset;
XYMultipleSeriesRenderer renderer;
public static boolean ClickEnabled = true;
public Intent getIntent(Context context) {
ArrayList<Integer> y = this.dataArray;
XYSeries seriesY = new XYSeries("Y");
for (int i = 0; i < y.size(); i++) {
seriesY.add(i, y.get(i));
}
dataset = new XYMultipleSeriesDataset();
dataset.addSeries(seriesY);
renderer.setPanEnabled(true, false);
renderer.setClickEnabled(ClickEnabled);
renderer.setBackgroundColor(Color.WHITE);
renderer.setApplyBackgroundColor(true);
renderer.setChartTitle("Simple data");
renderer.setAxesColor(Color.BLACK);
XYMultipleSeriesRenderer mRenderer = new XYMultipleSeriesRenderer();
XYSeriesRenderer renderer = new XYSeriesRenderer();
renderer.setColor(Color.RED);
renderer.setPointStyle(PointStyle.DIAMOND);
mRenderer.addSeriesRenderer(renderer);
Intent intent = ChartFactory.getLineChartIntent(context, dataset, mRenderer, "Line Graph Title");
return intent;
}
public void getData() {
ParseQuery<ParseObject> query = ParseQuery.getQuery("Counters_data");
query.getInBackground("lxFzCTeOcl", new GetCallback<ParseObject>() {
public void done(ParseObject parseObject, ParseException e) {
if (e == null) {
String object = parseObject.getString("value");
Integer objectValue = Integer.parseInt(object);
if (dataArray == null) {
dataArray = new ArrayList<Integer>();
dataArray.add(objectValue);
}
} else {
Log.d("score", "Error: " + e.getMessage());
}
}
});
}
}
And there is how I invoke charts:
public void lineGraphHandler(View view) {
LineGraph line = new LineGraph();
line.getData();
Intent lineIntent = line.getIntent(this);
startActivity(lineIntent);
}
And XML part:
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/counters"
android:onClick="lineGraphHandler"
android:text="Charts"
android:id="#+id/charts"/>
There is my logcat:
03-26 08:42:13.096 1229-1229/com.example.tst D/dalvikvm﹕ Late-enabling
CheckJNI 03-26 08:42:13.487 1229-1229/com.example.tst D/libEGL﹕ loaded
/system/lib/egl/libEGL_genymotion.so 03-26 08:42:13.491
1229-1229/com.example.tst D/﹕ HostConnection::get() New Host
Connection established 0xb94f4270, tid 1229 03-26 08:42:13.551
1229-1229/com.example.tst D/libEGL﹕ loaded
/system/lib/egl/libGLESv1_CM_genymotion.so 03-26 08:42:13.551
1229-1229/com.example.tst D/libEGL﹕ loaded
/system/lib/egl/libGLESv2_genymotion.so 03-26 08:42:14.035
1229-1229/com.example.tst W/EGL_genymotion﹕ eglSurfaceAttrib not
implemented 03-26 08:42:14.039 1229-1229/com.example.tst
E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache 03-26
08:42:14.043 1229-1229/com.example.tst E/OpenGLRenderer﹕
MAX_TEXTURE_SIZE: 4096 03-26 08:42:14.055 1229-1229/com.example.tst
E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from
Caches::initConstraints() 03-26 08:42:14.063 1229-1229/com.example.tst
E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 4096 03-26 08:42:14.063
1229-1229/com.example.tst D/OpenGLRenderer﹕ Enabling debug mode 0
03-26 08:42:50.327 1229-1229/com.example.tst D/dalvikvm﹕ GC_FOR_ALLOC
freed 200K, 8% free 2975K/3228K, paused 10ms, total 13ms 03-26
08:42:51.675 1229-1229/com.example.tst D/dalvikvm﹕ GC_FOR_ALLOC freed
431K, 14% free 3056K/3540K, paused 22ms, total 28ms 03-26 08:42:52.043
1229-1229/com.example.tst W/EGL_genymotion﹕ eglSurfaceAttrib not
implemented 03-26 08:42:53.543 1229-1229/com.example.tst
I/Choreographer﹕ Skipped 89 frames! The application may be doing too
much work on its main thread. 03-26 08:43:01.747
1229-1229/com.example.tst D/AndroidRuntime﹕ Shutting down VM 03-26
08:43:01.747 1229-1229/com.example.tst W/dalvikvm﹕ threadid=1: thread
exiting with uncaught exception (group=0xa4d8fb20) 03-26 08:43:01.767
1229-1229/com.example.tst E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.tst, PID: 1229 java.lang.IllegalStateException:
Could not execute method of the activity at
android.view.View$1.onClick(View.java:3823) at
android.view.View.performClick(View.java:4438) at
android.view.View$PerformClick.run(View.java:18422) at
android.os.Handler.handleCallback(Handler.java:733) at
android.os.Handler.dispatchMessage(Handler.java:95) at
android.os.Looper.loop(Looper.java:136) at
android.app.ActivityThread.main(ActivityThread.java:5017) at
java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at
dalvik.system.NativeStart.main(Native Method) Caused by:
java.lang.reflect.InvocationTargetException at
java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
android.view.View$1.onClick(View.java:3818) at
android.view.View.performClick(View.java:4438) at
android.view.View$PerformClick.run(View.java:18422) at
android.os.Handler.handleCallback(Handler.java:733) at
android.os.Handler.dispatchMessage(Handler.java:95) at
android.os.Looper.loop(Looper.java:136) at
android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method) Caused by:
java.lang.NullPointerException at
com.example.tst.LineGraph.getIntent(LineGraph.java:36) at
com.example.tst.MainActivity.lineGraphHandler(MainActivity.java:44)
at java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
android.view.View$1.onClick(View.java:3818) at
android.view.View.performClick(View.java:4438) at
android.view.View$PerformClick.run(View.java:18422) at
android.os.Handler.handleCallback(Handler.java:733) at
android.os.Handler.dispatchMessage(Handler.java:95) at
android.os.Looper.loop(Looper.java:136) at
android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method) 03-26 08:43:04.507
1229-1229/com.example.tst I/Process﹕ Sending signal. PID: 1229 SIG: 9
I don't understand where the problem is. My app starts but crashes immediately when I push "chart" button. Is it data type of problem or because I misunderstand something?
Thank you in advance.
I tried like this but still got crash:
public void done(ParseObject parseObject, ParseException e) {
if (e == null) {
String object = parseObject.getString("value");
Integer objectValue = Integer.parseInt(object);
if (dataArray == null) {
dataArray = new ArrayList<Integer>();
dataArray.add(objectValue);
ArrayList<Integer> y = dataArray;
XYSeries seriesY = new XYSeries("Y");
for (int i = 0; i < y.size(); i++) {
seriesY.add(i, y.get(i));
dataset = new XYMultipleSeriesDataset();
dataset.addSeries(seriesY);
}
}

Your getData() retrieves the data asynchronously. dataArray won't be initialized immediately when you call getIntent().
Wait for the async operation to complete before using the data there. For example, call the code requiring that data from the done() callback.

App using camera flash as a torch using Eclipse not working

I have been working on an app to use a phone's/tablet's camera flash as a flashlight. Everything seemed to be working fine but when I tested it on my Droid Bionic running Android 4.1.2, the app failed to turn on the flash even though it said it did. Here is the java code I used:
package com.example.flash;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
private boolean isFlashOn = false;
private Camera camera;
private Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.buttonFlashlight);
Context context = this;
PackageManager pm = context.getPackageManager();
if(!pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
Log.e("err", "Device has no camera!");
Toast.makeText(getApplicationContext(),
"Your device doesn't have camera!",Toast.LENGTH_SHORT).show();
return;
}
camera = Camera.open();
final Parameters p = camera.getParameters();
button.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
if (isFlashOn) {
Log.i("info", "torch is turned off!");
p.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(p);
isFlashOn = false;
button.setText("Tap to turn flashlight on.");
}
else {
Log.i("info", "torch is turned on!");
p.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(p);
isFlashOn = true;
button.setText("Tap to turn flashlight off.");
}
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
protected void onStop() {
super.onStop();
if (camera != null) {
camera.release();
}
}}
Is this code correct or did I miss something?
Logcat:
07-03 18:48:29.064: E/Trace(773): error opening trace file: No such file or directory (2)
07-03 18:48:30.535: D/Camera(773): app passed NULL surface
07-03 18:48:31.023: D/libEGL(773): loaded /system/lib/egl/libEGL_emulation.so
07-03 18:48:31.073: D/(773): HostConnection::get() New Host Connection established 0x2a13c3c0, tid 773
07-03 18:48:31.123: D/libEGL(773): loaded /system/lib/egl/libGLESv1_CM_emulation.so
07-03 18:48:31.173: D/libEGL(773): loaded /system/lib/egl/libGLESv2_emulation.so
07-03 18:48:31.406: W/EGL_emulation(773): eglSurfaceAttrib not implemented
07-03 18:48:31.433: D/OpenGLRenderer(773): Enabling debug mode 0
07-03 18:48:31.723: I/Choreographer(773): Skipped 58 frames! The application may be doing too much work on its main thread.
07-03 18:49:05.923: D/dalvikvm(773): GC_CONCURRENT freed 202K, 12% free 2623K/2956K, paused 74ms+25ms, total 234ms
07-03 18:49:06.216: W/EGL_emulation(773): eglSurfaceAttrib not implemented
07-03 18:49:09.584: D/Camera(773): app passed NULL surface
07-03 18:49:09.853: W/EGL_emulation(773): eglSurfaceAttrib not implemented
07-03 18:49:11.813: I/info(773): torch is turned on!
07-03 18:49:13.467: I/info(773): torch is turned off!
07-03 18:49:16.263: W/EGL_emulation(773): eglSurfaceAttrib not implemented
07-03 18:49:16.713: D/AndroidRuntime(773): Shutting down VM
07-03 18:49:16.713: W/dalvikvm(773): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
07-03 18:49:16.936: E/AndroidRuntime(773): FATAL EXCEPTION: main
07-03 18:49:16.936: E/AndroidRuntime(773): java.lang.RuntimeException: Method called after release()
07-03 18:49:16.936: E/AndroidRuntime(773): at android.hardware.Camera._stopPreview(Native Method)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.hardware.Camera.stopPreview(Camera.java:543)
07-03 18:49:16.936: E/AndroidRuntime(773): at com.example.flash.MainActivity.surfaceDestroyed(MainActivity.java:140)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.SurfaceView.updateWindow(SurfaceView.java:553)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.SurfaceView.onWindowVisibilityChanged(SurfaceView.java:231)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.View.dispatchWindowVisibilityChanged(View.java:7544)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1039)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1039)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1039)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1039)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1211)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.Choreographer.doFrame(Choreographer.java:532)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.os.Handler.handleCallback(Handler.java:725)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.os.Handler.dispatchMessage(Handler.java:92)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.os.Looper.loop(Looper.java:137)
07-03 18:49:16.936: E/AndroidRuntime(773): at android.app.ActivityThread.main(ActivityThread.java:5041)
07-03 18:49:16.936: E/AndroidRuntime(773): at java.lang.reflect.Method.invokeNative(Native Method)
07-03 18:49:16.936: E/AndroidRuntime(773): at java.lang.reflect.Method.invoke(Method.java:511)
07-03 18:49:16.936: E/AndroidRuntime(773): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-03 18:49:16.936: E/AndroidRuntime(773): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-03 18:49:16.936: E/AndroidRuntime(773): at dalvik.system.NativeStart.main(Native Method)
07-03 18:49:24.854: E/Trace(811): error opening trace file: No such file or directory (2)
07-03 18:49:25.413: D/libEGL(811): loaded /system/lib/egl/libEGL_emulation.so
07-03 18:49:25.567: D/(811): HostConnection::get() New Host Connection established 0x2a15f570, tid 811
07-03 18:49:25.643: D/libEGL(811): loaded /system/lib/egl/libGLESv1_CM_emulation.so
07-03 18:49:25.663: D/libEGL(811): loaded /system/lib/egl/libGLESv2_emulation.so
07-03 18:49:25.934: W/EGL_emulation(811): eglSurfaceAttrib not implemented
07-03 18:49:25.963: D/OpenGLRenderer(811): Enabling debug mode 0
07-03 18:53:12.298: D/Camera(811): app passed NULL surface
07-03 18:53:12.723: D/dalvikvm(811): GC_CONCURRENT freed 172K, 11% free 2600K/2904K, paused 9ms+165ms, total 421ms
07-03 18:53:12.934: E/EGL_emulation(811): rcCreateWindowSurface returned 0
07-03 18:53:12.934: E/EGL_emulation(811): tid 811: eglCreateWindowSurface(631): error 0x3003 (EGL_BAD_ALLOC)
07-03 18:53:12.943: D/AndroidRuntime(811): Shutting down VM
07-03 18:53:12.943: W/dalvikvm(811): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
07-03 18:53:13.033: E/AndroidRuntime(811): FATAL EXCEPTION: main
07-03 18:53:13.033: E/AndroidRuntime(811): java.lang.RuntimeException: createWindowSurface failed EGL_BAD_ALLOC
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.HardwareRenderer$GlRenderer.createSurface(HardwareRenderer.java:1064)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.HardwareRenderer$GlRenderer.createEglSurface(HardwareRenderer.java:961)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.HardwareRenderer$GlRenderer.initialize(HardwareRenderer.java:787)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1502)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.Choreographer.doFrame(Choreographer.java:532)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.os.Handler.handleCallback(Handler.java:725)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.os.Handler.dispatchMessage(Handler.java:92)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.os.Looper.loop(Looper.java:137)
07-03 18:53:13.033: E/AndroidRuntime(811): at android.app.ActivityThread.main(ActivityThread.java:5041)
07-03 18:53:13.033: E/AndroidRuntime(811): at java.lang.reflect.Method.invokeNative(Native Method)
07-03 18:53:13.033: E/AndroidRuntime(811): at java.lang.reflect.Method.invoke(Method.java:511)
07-03 18:53:13.033: E/AndroidRuntime(811): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-03 18:53:13.033: E/AndroidRuntime(811): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-03 18:53:13.033: E/AndroidRuntime(811): at dalvik.system.NativeStart.main(Native Method)

UPDATE
I think the key is you are running Android 4.1.2. Since Android 4.0, if you want to use the Camera Device, even if you only want to use the flash, you are forced to use a SurfaceView.
In the previous answer (below), I gave you a link to a Torch app which uses SurfaceView. Try it or adapt it to your code.
PREVIOUS ANSWER:
As stated in many other cases (like this one), you may be facing a Device-Specific issue that is quite common in the Android world.
Although getSupportedFlashModes() may return FLASH_MODE_TORCH on nearly every device, many of them don't actually support it.
Anyway, you could try these:
Use camera.startPreview(); after camera = Camera.open();
Try setting FLASH_MODE_OFF initially (before camera.startPreview();).
Check if this Torch app works in your device. In case it does, you have the source code to compare it to yours.
Download a Torch app from the Play Store to test if it's a device issue or not.
Post the issue in a Droid Bionic support forum.
UPDATE: I would say the final keyword is a problem in your code. Try changing it to:
//camera = Camera.open();
//final Parameters p = camera.getParameters();
button.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
if (isFlashOn) {
Log.i("info", "torch is turned off!");
cam.stopPreview();
cam.release();
isFlashOn = false;
button.setText("Tap to turn flashlight on.");
}
else {
Log.i("info", "torch is turned on!");
camera = Camera.open();
Parameters p = camera.getParameters();
p.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(p);
camera.startPreview();
p.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(p);
isFlashOn = true;
button.setText("Tap to turn flashlight off.");
}
}
});

user the permission "android.permission.FLASHLIGHT" in the manifest
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.CAMERA" />

Android: Using array adapter to display a list array

I'm not getting a direct error in Eclipse.. but when trying to run this on my phone it doesn't open the activity and then my phone resets. I might be using the array adapter wrong.. but here's my code files:
Java File
package creativecoders.periodictable;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class AM extends Activity {
private ListView amList;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.am);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
#Override
public void onStart() {
super.onStart();
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.AM, android.R.layout.simple_list_item_1);
amList.setAdapter(adapter);
}
public void onPause() {
super.onPause();
finish();
}
public void onStop() {
super.onStop();
finish();
}
public void onDestroy() {
super.onDestroy();
finish();
}
}
XML Layout File
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
String File
<string-array name="AM">
<item> ONE </item>
<item> TWO </item>
<item> THREE </item>
</string-array>
EDIT: Log file:
04-20 23:10:07.660: D/AndroidRuntime(284): Shutting down VM
04-20 23:10:07.660: W/dalvikvm(284): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-20 23:10:07.670: E/AndroidRuntime(284): FATAL EXCEPTION: main
04-20 23:10:07.670: E/AndroidRuntime(284): java.lang.RuntimeException: Unable to start activity ComponentInfo{creativecoders.periodictable/creativecoders.periodictable.AM}: java.lang.NullPointerException
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.os.Handler.dispatchMessage(Handler.java:99)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.os.Looper.loop(Looper.java:123)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-20 23:10:07.670: E/AndroidRuntime(284): at java.lang.reflect.Method.invokeNative(Native Method)
04-20 23:10:07.670: E/AndroidRuntime(284): at java.lang.reflect.Method.invoke(Method.java:521)
04-20 23:10:07.670: E/AndroidRuntime(284): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-20 23:10:07.670: E/AndroidRuntime(284): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-20 23:10:07.670: E/AndroidRuntime(284): at dalvik.system.NativeStart.main(Native Method)
04-20 23:10:07.670: E/AndroidRuntime(284): Caused by: java.lang.NullPointerException
04-20 23:10:07.670: E/AndroidRuntime(284): at creativecoders.periodictable.AM.onStart(AM.java:28)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.Activity.performStart(Activity.java:3781)
04-20 23:10:07.670: E/AndroidRuntime(284): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2636)
04-20 23:10:07.670: E/AndroidRuntime(284): ... 11 more

you did not initialize the ListView. in onCreate()
amList = (ListView)findViewById(R.id.listView1);

We Keep Coding

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

Android - how do I detect what is crashing my app? [closed] - java

You are getting NullPointerException on ImageView img = (ImageView)findViewById(R.id.row_imageview); Please use ImageView img = (ImageView)v.findViewById(R.id.row_imageview); as img is in View v same as TextView name. Hope this helps.

Related

read txt file into 2d array force exit

Array Adapter Load Images from Res Folder (Android App)

AChartEngine - Charts with data from parse.com won't display

App using camera flash as a torch using Eclipse not working

Android: Using array adapter to display a list array

Categories

Resources