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Trying to create a Journal in Android Studio but App Crashes

Upon opening the first activity of my app in Android Studio, app opens fine. I copied and pasted the same main activity code to open the journal activity, and changed the variable names that were needed, but app crashes upon opening the journal up.
here is the code for opening up the journal:
public class Activity2 extends AppCompatActivity {
private Button buttonJournal;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_2);
buttonJournal = (Button) findViewById(R.id.buttonJournal);
buttonJournal.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
openJournalActivity();
}
});
}
public void openJournalActivity () {
Intent intent = new Intent(this, JournalActivity.class);
startActivity(intent);
}
}
The journal activity I am opening up: (This might be my problem)
public class JournalActivity extends AppCompatActivity {
static ArrayList<String> notes = new ArrayList<>();
static ArrayAdapter arrayAdapter;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.add_note_menu, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(#NonNull MenuItem item) {
super.onOptionsItemSelected(item);
if(item.getItemId() == R.id.add_note){
Intent intent = new Intent(getApplicationContext(), NoteEditorActivity.class);
startActivity(intent);
return true;
}
return false;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_journal);
ListView listView = findViewById(R.id.listView);
SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("com.example.anxty", Context.MODE_PRIVATE);
HashSet<String> set = (HashSet<String>) sharedPreferences.getStringSet("notes", null);
if(set == null) {
notes.add("Example note");
} else{
notes = new ArrayList(set);
}
arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, notes);
listView.setAdapter(arrayAdapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Intent intent = new Intent(getApplicationContext(), NoteEditorActivity.class);
intent.putExtra("noteId",i);
startActivity(intent);
}
});
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
final int itemToDelete = i;
new AlertDialog.Builder(getApplicationContext())
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle("Are you sure?")
.setMessage("Do you want to delete this note")
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int i) {
notes.remove(itemToDelete);
arrayAdapter.notifyDataSetChanged();
SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("com.example.anxty", Context.MODE_PRIVATE);
HashSet<String> set = new HashSet(JournalActivity.notes);
sharedPreferences.edit().putStringSet("notes",set).apply();
}
})
.setNegativeButton("No", null)
.show();
return true;
}
});
}
}
LogCat when app crashes:
-06-11 11:55:55.744 6677-6677/com.example.anxty E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.anxty, PID: 6677
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.anxty/com.example.anxty.JournalActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2392)
at android.app.ActivityThread.access$800(ActivityThread.java:153)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1305)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5293)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
at com.example.anxty.JournalActivity.onCreate(JournalActivity.java:79)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2280)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2392) 
at android.app.ActivityThread.access$800(ActivityThread.java:153) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1305) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:135) 
at android.app.ActivityThread.main(ActivityThread.java:5293) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:dist="http://schemas.android.com/apk/distribution"
package="com.example.anxty">
<dist:module dist:instant="true" />
<application
android:allowBackup="true"
android:icon="#mipmap/anxty_logo"
android:label="#string/app_name"
android:roundIcon="#mipmap/anxty_logo"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".NoteEditorActivity"></activity>
<activity android:name=".JournalActivity" />
<activity
android:name=".ui.login.LoginActivity"
android:label="#string/title_activity_login" />
<activity
android:name=".Activity2"
android:label="#string/title_activity_2"
android:theme="#style/AppTheme.NoActionBar" /> <!-- Main Activity -->
<activity
android:name=".MainActivity"
android:screenOrientation="portrait" /> <!-- Splash Screen Activity -->
<activity
android:name=".SplashScreen"
android:noHistory="true"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Android - App crashes only on first launch but works the second time

I am having a problem with my Android Flashlight App. The app crashes when I try to press the home button of the device while the app is opened then resuming (by clicking the app icon on home screen not recent apps button). After I terminate the app from the recent apps list then opening again, it does not crash anymore using the same instructions above.
Please see code below.
public class MainActivity extends Settings {
public Camera camera;
public Camera.Parameters parameters;
public ImageButton flashLightButton;
boolean isFlashLightOn = false;
MediaPlayer mySound;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
flashLightButton = (ImageButton)findViewById(R.id.flashlight_button);
flashLightButton.setOnClickListener(new FlashOnOffListener());
registerReceiver(mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
mySound = MediaPlayer.create(this, R.raw.balloon_snap);
if (isFlashSupported()) {
camera = Camera.open();
parameters = camera.getParameters();
} else {
showNoFlashAlert();
}
Settings.active = false;
//super.onCreate(savedInstanceState);
//Set layout we created
//setContentView(R.layout.activity_main);
//Register the receiver which triggers event
//when battery charge is changed
}
public void settings(View view)
{
Intent intent = new Intent(MainActivity.this, Settings.class);
startActivity(intent);
this.finish();
}
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() {
#Override
//When Event is published, onReceive method is called
public void onReceive(Context c, Intent i) {
//Get Battery %
int level = i.getIntExtra("level", 0);
//Find the progressbar creating in main.xml
ProgressBar pb = (ProgressBar) findViewById(R.id.progressbar);
//Set progress level with battery % value
pb.setProgress(level);
//Find textview control created in main.xml
TextView tv = (TextView) findViewById(R.id.textfield);
//Set TextView with text
tv.setText("" + Integer.toString(level) + "");
}
};
public class FlashOnOffListener implements View.OnClickListener{
SharedPreferences sharedPrefs = getSharedPreferences("VibrateSettings", MODE_PRIVATE);
Boolean vibration = sharedPrefs.getBoolean("VibrateSet", false);
SharedPreferences sharedPrefs2 = getSharedPreferences("SoundSettings", MODE_PRIVATE);
Boolean sound = sharedPrefs2.getBoolean("SoundSet", false);
#Override
public void onClick(View v) {
if(isFlashLightOn){
flashLightButton.setImageResource(R.drawable.flashlight_off);
parameters.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(parameters);
camera.stopPreview();
isFlashLightOn = false;
if(vibration == true){
// Get instance of Vibrator from current Context
Vibrator vib = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 400 milliseconds
vib.vibrate(20);
}
else {
// Get instance of Vibrator from current Context
Vibrator vib = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 400 milliseconds
vib.vibrate(00);
}
if (sound == true){
mySound.start();
}
}else{
flashLightButton.setImageResource(R.drawable.flashlight_on);
parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(parameters);
camera.startPreview();
isFlashLightOn = true;
if(vibration == true){
// Get instance of Vibrator from current Context
Vibrator vib = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 400 milliseconds
vib.vibrate(20);
}
else {
// Get instance of Vibrator from current Context
Vibrator vib = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 400 milliseconds
vib.vibrate(00);
}
if (sound == true){
mySound.start();
}
}
}
}
private void showNoFlashAlert() {
new AlertDialog.Builder(this)
.setMessage("Your device hardware does not support flashlight!")
.setIcon(android.R.drawable.ic_dialog_alert).setTitle("Error")
.setPositiveButton("Ok", new OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish();
}
}).show();
}
private boolean isFlashSupported() {
PackageManager pm = getPackageManager();
return pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
}
#Override
protected void onDestroy() {
if(camera != null){
camera.stopPreview();
camera.release();
camera = null;
}
super.onDestroy();
}}
AndroidManifest.xml
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.BATTERY_STATS"/>
<uses-permission android:name="android.permission.BROADCAST_STICKY"/>
<uses-permission android:name="android.permission.VIBRATE"/>
<application
android:allowBackup="true"
android:icon="#drawable/btn_switch_on"
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=".Settings"
android:label="#string/app_name">
</activity>
</application>
logcat
E/AndroidRuntime(22941): FATAL EXCEPTION: main
E/AndroidRuntime(22941): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.johncarlo.flashlight/com.example.johncarlo.flashlight.MainActivity}: java.lang.RuntimeException: Fail to connect to camera service
E/AndroidRuntime(22941): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2186)
E/AndroidRuntime(22941): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2236)
E/AndroidRuntime(22941): at android.app.ActivityThread.access$600(ActivityThread.java:145)
E/AndroidRuntime(22941): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1238)
E/AndroidRuntime(22941): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(22941): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(22941): at android.app.ActivityThread.main(ActivityThread.java:5099)
E/AndroidRuntime(22941): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(22941): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime(22941): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:803)
E/AndroidRuntime(22941): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:570)
E/AndroidRuntime(22941): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime(22941): Caused by: java.lang.RuntimeException: Fail to connect to camera service
E/AndroidRuntime(22941): at android.hardware.Camera.native_setup(Native Method)
E/AndroidRuntime(22941): at android.hardware.Camera.<init>(Camera.java:365)
E/AndroidRuntime(22941): at android.hardware.Camera.open(Camera.java:338)
E/AndroidRuntime(22941): at com.example.johncarlo.flashlight.MainActivity.onCreate(MainActivity.java:49)
E/AndroidRuntime(22941): at android.app.Activity.performCreate(Activity.java:5117)
E/AndroidRuntime(22941): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
E/AndroidRuntime(22941): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2150)
E/AndroidRuntime(22941): ... 11 more
W/ActivityManager( 786): Force finishing activity com.example.johncarlo.flashlight/.MainActivity

Remove below line from onCreate and write it in onResume and it might not crash after doing so.
#Override
protected void onResume() {
super.onResume();
registerReceiver(mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}

Android Handler Chain NullPointerException

I'm trying to create communication between Activity - Service - Thread by Handlers. Activity starts a Service that starts a Thread. Thread sends request to the server, waits answer and resend it to Service by Handler (work fine). But when i have try to send message from Service's Handler to Activity app closed with NullPointerException. What am i do wrong?
Handler code based on Android Handler changing WeakReference
My Activity
public class ActivityLogin extends Activity{
public static LoginHandler loginHandler = null;
public static class LoginHandler extends Handler {
private WeakReference<ActivityLogin> target = null;
LoginHandler(ActivityLogin target) {
this.target = new WeakReference<ActivityLogin>(target);
}
public void setTarget(ActivityLogin target) {
this.target.clear();
this.target = new WeakReference<ActivityLogin>(target);
}
#Override
public void handleMessage(Message msg) {
ActivityLogin activity = this.target.get();
if(activity == null) return;
String response = msg.getData().getString("RESPONSE");
System.err.println("RESPONSE "+response);
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
Log.d("TAG","---------------------APP STARTED---------------------");
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_login);
if(loginHandler == null) loginHandler = new LoginHandler(this);
else loginHandler.setTarget(this);
}
public void onLogin(View v){
JsonUser user = new JsonUser();
user.login = "Name";
user.password = "Pazzword";
user.device = "4567-753-5768-2343";
Intent intent = new Intent(this,ComService.class);
intent.putExtra("DATA_KEY", new Gson().toJson(user));
this.startService(intent);
}
}
My Service
public class ComService extends Service {
public static ServiceHandler serviceHandler = null;
public static class ServiceHandler extends Handler {
private WeakReference<ComService> target = null;
ServiceHandler(ComService target) {
this.target = new WeakReference<ComService>(target);
}
public void setTarget(ComService target) {
this.target.clear();
this.target = new WeakReference<ComService>(target);
}
#Override
public void handleMessage(Message msg) {
//ComService service = this.target.get();
//Process message (msg) and resend to activity
ActivityLogin.loginHandler.sendMessage(msg);
}
}
#Override
public void onCreate() {
super.onCreate();
if(serviceHandler == null) serviceHandler = new ServiceHandler(this);
else serviceHandler.setTarget(this);
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
String message = intent.getStringExtra("DATA_KEY");
new SendData("http://xxx.xxx.xxx.xxx:27019/WebService.svc/login",message);
stopSelf(startId);
return START_REDELIVER_INTENT;
}
}
My Thread
public class SendData extends Thread {
private String requestUrl;
private String message;
public SendData(String requestUrl, String message){
super();
this.requestUrl = requestUrl;
this.message = message;
this.start();
}
public void run(){
String serverResponse = request();
if(serverResponse == null) return;
System.err.println(serverResponse);
Message msg = new Message();
Bundle bundle = new Bundle();
bundle.putString("RESPONSE", serverResponse);
msg.setData(bundle);
ComService.serviceHandler.sendMessage(msg);
}
private String request(){...}//if need, i can post request code too
}
UPDATE
04-15 18:36:35.292 24524-24524/com.example.test E/Trace﹕ error opening trace file: No such file or directory (2)
04-15 18:36:35.332 24524-24524/com.example.test D/TAG﹕ ---------------------APP STARTED---------------------
04-15 18:36:35.462 24524-24524/com.example.test D/libEGL﹕ loaded /system/lib/egl/libEGL_mali.so
04-15 18:36:35.462 24524-24524/com.example.test D/libEGL﹕ loaded /system/lib/egl/libGLESv1_CM_mali.so
04-15 18:36:35.462 24524-24524/com.example.test D/libEGL﹕ loaded /system/lib/egl/libGLESv2_mali.so
04-15 18:36:35.492 24524-24524/com.example.test D/OpenGLRenderer﹕ Enabling debug mode 0
04-15 18:36:36.442 24554-24554/com.example.test:background E/Trace﹕ error opening trace file: No such file or directory (2)
04-15 18:36:36.682 24554-24567/com.example.test:background W/System.err﹕ {"status":{"success":false,"message":"some_text"},"result":null}
04-15 18:36:36.682 24554-24554/com.example.test:background D/AndroidRuntime﹕ Shutting down VM
04-15 18:36:36.682 24554-24554/com.example.test:background W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41712300)
04-15 18:36:36.682 24554-24554/com.example.test:background E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
at com.example.test.ComService$ServiceHandler.handleMessage(ComService.java:31)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
AndroidManifext.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="14"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-feature android:name="android.hardware.camera" android:required="true" />
<application android:label="#string/app_name" android:icon="#drawable/ic_launcher"
android:theme="#android:style/Theme.Holo.Light.NoActionBar.Fullscreen">
<activity android:name=".ActivityLogin"
android:label="#string/app_name"
android:windowSoftInputMode="stateHidden"
android:theme="#android:style/Theme.Holo.Light.NoActionBar.Fullscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<service android:name=".ComService"
android:exported="false"
android:process=":background"
/>
</application>
</manifest>

In conclusion, i deleted Service from my application. Android Service is cancer tumor, threads without benefits. It's just my opinion.

How to pass get text from userinput (edittext) and put into a textview in another activity?

I would like to take user input entered in the EditTextField(in the EnterNewFile class) and put it into the TextField (in the NoteEdit class). Please help! Thanks! FYI- I use XML files for the layouts of these two classes.
***********EnterNewFile.class*********
package com.example.note;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class EnterNewFile extends Activity {
public EditText mText;
public Button mButton;
public final static String EXTRA_MESSAGE = "com.example.note.MESSAGE";
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.new_file_start);
mText = (EditText)findViewById(R.id.file_name_edittext);
mButton = (Button)findViewById(R.id.next_button);
}
public void nextButton(View view)
{
/** Called when the user clicks the Next button */
Log.d("EditText", mText.getText().toString());
mText.getText().toString();
Intent intent = new Intent(this, NoteEdit.class);
EditText editText = (EditText) findViewById(R.id.file_name_edittext);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
//
}
}
******************************************
********NoteEdit.class************
package com.example.note;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
public class NoteEdit extends Activity{
public static int numTitle = 1;
public static String curDate = "";
public static String curText = "";
private TextView mTitleText;
private EditText mBodyText;
private TextView mDateText;
private Long mRowId;
private Cursor note;
private NotesDbAdapter mDbHelper;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDbHelper = new NotesDbAdapter(this);
mDbHelper.open();
setContentView(R.layout.note_edit_add);
setTitle(R.string.app_name);
mTitleText = (TextView) findViewById(R.id.title);
mBodyText = (EditText) findViewById(R.id.body);
mDateText = (TextView) findViewById(R.id.notelist_date);
long msTime = System.currentTimeMillis();
Date curDateTime = new Date(msTime);
SimpleDateFormat formatter = new SimpleDateFormat("M'/'d'/'y");
curDate = formatter.format(curDateTime);
mDateText.setText(""+curDate);
// Get the message from the intent
Intent intent = getIntent();
String message = intent.getStringExtra(EnterNewFile.EXTRA_MESSAGE);
// Create the text view
// TextView textView = new TextView(this);
mTitleText.setText(message);
// Set the text view as the activity layout
// setContentView(textView);
// mTitleText.setText(dana);
mRowId = (savedInstanceState == null) ? null :
(Long) savedInstanceState.getSerializable(NotesDbAdapter.KEY_ROWID);
if (mRowId == null) {
Bundle extras = getIntent().getExtras();
mRowId = extras != null ? extras.getLong(NotesDbAdapter.KEY_ROWID)
: null;
}
populateFields();
}
public void addFiles(View view)
{
/*Intent addFilesTarget = new Intent(this, Welcome.class);
startActivity(addFilesTarget);*/
}
public static class LineEditText extends EditText{
// we need this constructor for LayoutInflater
public LineEditText(Context context, AttributeSet attrs) {
super(context, attrs);
mRect = new Rect();
mPaint = new Paint();
mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
mPaint.setColor(Color.BLUE);
}
private Rect mRect;
private Paint mPaint;
#Override
protected void onDraw(Canvas canvas) {
int height = getHeight();
int line_height = getLineHeight();
int count = height / line_height;
if (getLineCount() > count)
count = getLineCount();
Rect r = mRect;
Paint paint = mPaint;
int baseline = getLineBounds(0, r);
for (int i = 0; i < count; i++) {
canvas.drawLine(r.left, baseline + 1, r.right, baseline + 1, paint);
baseline += getLineHeight();
super.onDraw(canvas);
}
}
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
saveState();
outState.putSerializable(NotesDbAdapter.KEY_ROWID, mRowId);
}
#Override
protected void onPause() {
super.onPause();
saveState();
}
#Override
protected void onResume() {
super.onResume();
populateFields();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.noteedit_menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_about:
/* Here is the intro about myself */
AlertDialog.Builder dialog = new AlertDialog.Builder(NoteEdit.this);
dialog.setTitle("About");
dialog.setMessage("Hello! I'm Dana, creator of this application. This is for documenting research."
+"\n melaninabeauty#gmail.com");
dialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
dialog.show();
return true;
case R.id.menu_delete:
if(note != null){
note.close();
note = null;
}
if(mRowId != null){
mDbHelper.deleteNote(mRowId);
}
finish();
return true;
case R.id.menu_save:
saveState();
finish();
default:
return super.onOptionsItemSelected(item);
}
}
private void saveState() {
String title = mTitleText.getText().toString();
String body = mBodyText.getText().toString();
if(mRowId == null){
mDbHelper.createNote(title, body, curDate);
}else{
mDbHelper.updateNote(mRowId, title, body, curDate);
}
}
private void populateFields() {
if (mRowId != null) {
note = mDbHelper.fetchNote(mRowId);
startManagingCursor(note);
mTitleText.setText(note.getString(
note.getColumnIndexOrThrow(NotesDbAdapter.KEY_TITLE)));
mBodyText.setText(note.getString(
note.getColumnIndexOrThrow(NotesDbAdapter.KEY_BODY)));
curText = note.getString(
note.getColumnIndexOrThrow(NotesDbAdapter.KEY_BODY));
}
}
}
***********************************
****AndroidManifest.xml****
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.note"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.note.Welcome"
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="com.example.note.NoteList">
</activity>
<activity
android:name="com.example.note.NoteEdit">
</activity>
<activity
android:name="com.example.note.Export">
</activity>
<activity
android:name="com.example.note.NoteEditAdd">
</activity>
<activity
android:name="com.example.note.EnterNewFile">
</activity>
</application>
</manifest>
<!--
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.note"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity android:name="com.example.note.Welcome">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.note.NoteList"
android:label="#string/app_name" >
</activity>
<activity
android:name="com.example.note.NoteEdit"
android:label="#string/edit_note"
android:parentActivityName="com.example.note.Welcome" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.note.Welcome" />
</activity>
</application>
</manifest>
-->
<!--
activity 2 android:name= com.example.note.NoteEdit
android:label=#string/app_name
android:windowSoftInputMode="djustUnspecified/>
-->
*****************************
> *****LogCat of crash**** Crash occurs after nextButton is clicked****(I inputted the text "nouy", clicked nextButton, then application crashes.********************
LogCat of crash** Crash occurs after nextButton is clicked*(I inputted the text "nouy", clicked nextButton, then application crashees.**
08-02 20:48:36.703: D/EditText(3575): nouy
08-02 20:48:36.793: I/Choreographer(3575): Skipped 68 frames! The application may be doing too much work on its main thread.
08-02 20:48:37.143: D/dalvikvm(3575): GC_CONCURRENT freed 1331K, 34% free 2956K/4428K, paused 4ms+59ms, total 137ms
08-02 20:48:37.353: D/AndroidRuntime(3575): Shutting down VM
08-02 20:48:37.394: W/dalvikvm(3575): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
08-02 20:48:37.443: E/AndroidRuntime(3575): FATAL EXCEPTION: main
08-02 20:48:37.443: E/AndroidRuntime(3575): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.note/com.example.note.NoteEdit}: android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.os.Handler.dispatchMessage(Handler.java:99)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.os.Looper.loop(Looper.java:137)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.ActivityThread.main(ActivityThread.java:5041)
08-02 20:48:37.443: E/AndroidRuntime(3575): at java.lang.reflect.Method.invokeNative(Native Method)
08-02 20:48:37.443: E/AndroidRuntime(3575): at java.lang.reflect.Method.invoke(Method.java:511)
08-02 20:48:37.443: E/AndroidRuntime(3575): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-02 20:48:37.443: E/AndroidRuntime(3575): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-02 20:48:37.443: E/AndroidRuntime(3575): at dalvik.system.NativeStart.main(Native Method)
08-02 20:48:37.443: E/AndroidRuntime(3575): Caused by: android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.database.AbstractCursor.checkPosition(AbstractCursor.java:424)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.database.AbstractWindowedCursor.checkPosition(AbstractWindowedCursor.java:136)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:50)
08-02 20:48:37.443: E/AndroidRuntime(3575): at com.example.note.NoteEdit.populateFields(NoteEdit.java:231)
08-02 20:48:37.443: E/AndroidRuntime(3575): at com.example.note.NoteEdit.onCreate(NoteEdit.java:99)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.Activity.performCreate(Activity.java:5104)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
08-02 20:48:37.443: E/AndroidRuntime(3575): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
08-02 20:48:37.443: E/AndroidRuntime(3575): ... 11 more
08-02 20:48:40.073: E/Trace(3598): error opening trace file: No such file or directory
(2)

Take the input from Edittext send it through the Intent to your destination activity and then set it in the TextView there.
I think you seem to already be doing that in your code:
The issue might be the you've not defined in your XML that nextButton function should be call on click ( inside android:onClick: inside your Button).
What you can also do is, in your onCreate funcion set up a listener which listens to the button click and call the intent from within it.
final EditText editText = (EditText) findViewById(R.id.file_name_edittext);
mButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
/** Called when the user clicks the Next button */
Log.d("EditText", mText.getText().toString());
Intent intent = new Intent(EnterNewFile.this, NoteEdit.class);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
});
//here you are taking value from EditText and send it to other activity:
Instead of
// Get the message from the intent
Intent intent = getIntent();
String message = intent.getStringExtra(EnterNewFile.EXTRA_MESSAGE);
use following in onCreate() of your other NoteEdit activity:
Intent intent = getIntent();
if((intent.getExtras()!=null) && !intent.getExtras().isEmpty()){
String message = intent.getExtras().getString(EnterNewFile.EXTRA_MESSAGE);
}

this code is working:-
scrollview=(ScrollView)findViewById(R.id.scrollview1);
tb2.setTextSize(30);
tb2.setMovementMethod(new ScrollingMovementMethod());
scrollview.post(new Runnable() {
public void run() {
scrollview.fullScroll(View.FOCUS_DOWN);
}
});
chat1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
{
textsaring1=edt1.getText().toString();
tb2.setText(tb2.getText()+" "+textsaring1);
edt1.setText("");
}
}
});

Application code used to work but now crashes

Thing is my application used to run PERFECTLY but then i wanted to change packages names and classes names so i created another project and copy pasted my code and did the changes there. no error in eclipse but app crashes now !! here's whats my app is about:
public class LocationMobileUser implements LocationListener {
Context gContext;
boolean gps_enabled=false;
boolean network_enabled=false;
public LocationMobileUser(Context gContext){
this.gContext = gContext;
}
public static final String URL =
"http://www.ip2phrase.com/ip2phrase.asp?template=%20%3CISP%3E";
public void XML (View view) {
GetXMLTask task = new GetXMLTask();
task.execute(new String[] { URL });
}
public class GetXMLTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... urls) {
String output = null;
for (String url : urls) {
output = getOutputFromUrl(url);
}
return output;
}
public String getOutputFromUrl(String url) {
StringBuffer output = new StringBuffer("");
int x =1;
try {
InputStream stream = getHttpConnection(url);
LineNumberReader lnr = new LineNumberReader(new InputStreamReader(stream));
String line = "";
int lineNo;
for (lineNo = 1; lineNo < 90; lineNo++) {
if (lineNo == x) {
line = lnr.readLine();
//output.append(line);
Pattern p = Pattern.compile(">(.*?)<");
Matcher m = p.matcher(line);
if (m.find()) {
output.append(m.group(1)); // => "isp"
}
} else
lnr.readLine();
}
} catch (IOException e1) {
e1.printStackTrace();
}
return output.toString();
}
// Makes HttpURLConnection and returns InputStream
public InputStream getHttpConnection(String urlString)
throws IOException {
InputStream stream = null;
URL url = new URL(urlString);
URLConnection connection = url.openConnection();
try {
HttpURLConnection httpConnection = (HttpURLConnection) connection;
httpConnection.setRequestMethod("GET");
httpConnection.connect();
if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
stream = httpConnection.getInputStream();
}
} catch (Exception ex) {
ex.printStackTrace();
}
return stream;
}
}
public String getSimOperator() {
TelephonyManager telephonyManager = (TelephonyManager)gContext.getSystemService(Context.TELEPHONY_SERVICE);
String operator = telephonyManager.getSimOperatorName();
return operator;
}
public GsmCellLocation getCellLocation() {
//String Context=Context.Telephony_SERVICE;
TelephonyManager telephonyManager = (TelephonyManager)gContext.getSystemService(Context.TELEPHONY_SERVICE);
GsmCellLocation CellLocation = (GsmCellLocation)telephonyManager.getCellLocation();
return CellLocation;
}
public Location getLocation(){
String provider = null;
LocationManager locationManager;
Location gps_loc=null;
String context = Context.LOCATION_SERVICE;
locationManager = (LocationManager)gContext.getSystemService(context);
gps_loc=locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
try{gps_enabled=locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
if(gps_enabled && gps_loc != null){
provider = LocationManager.GPS_PROVIDER;
}
else{
provider = LocationManager.NETWORK_PROVIDER;
}
Location location = locationManager.getLastKnownLocation(provider);
locationManager.requestLocationUpdates(provider, 20000, 1, this);
return location;
}
public String getProvider(Location location){
String provider = null;
LocationManager locationManager;
Location gps_loc=null;
String context = Context.LOCATION_SERVICE;
locationManager = (LocationManager)gContext.getSystemService(context);
gps_loc=locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
try{gps_enabled=locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
if(gps_enabled && gps_loc != null ){
provider = LocationManager.GPS_PROVIDER;
}
else{
provider = LocationManager.NETWORK_PROVIDER;
}
return provider;
}
public String CellLacLocation(GsmCellLocation CellLocation){
String cidlacString;
if (CellLocation != null) {
int cid = CellLocation.getCid();
int lac = CellLocation.getLac();
cidlacString = "CellID:" + cid + "\nLAC:" + lac;}
else {
cidlacString="No Cell Location Available";
}
return cidlacString;
}
public String updateWithNewLocation(Location location) {
String latLongString;
if (location != null){
double lat = location.getLatitude();
double lng = location.getLongitude();
latLongString = "Latitude:" + lat + "\nLongitude:" + lng;
}else{
latLongString = "No Location available";
}
return latLongString;
}
#Override
public void onLocationChanged(Location arg0) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
}
this app will be exported into a JAR file and then included into another app as a library using build path; and here's what i wrote in this new app:
public class LocationTheApp extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocationMobileUser LMU = new LocationMobileUser (this);
Location location = LMU.getLocation();
GsmCellLocation CellLocation = LMU.getCellLocation();
String URL = LocationMobileUser.URL;
LocationMobileUser.GetXMLTask xmlp = LMU.new GetXMLTask();
String Provider = LMU.getProvider(location);
String isp = xmlp.getOutputFromUrl(URL);
String latLongString = LMU.updateWithNewLocation(location);
String cidlacString = LMU.CellLacLocation(CellLocation);
String operator = LMU.getSimOperator();
TextView myLocationText = (TextView)findViewById(R.id.myLocationText);
myLocationText.setText("Your current GPS position is:\n" + latLongString);
TextView myprovider = (TextView)findViewById(R.id.myprovider);
myprovider.setText("\nYour GPS position is provided by:\n" + Provider);
TextView myCellLocation = (TextView)findViewById(R.id.mycelllocation);
myCellLocation.setText("\nYour current Cell position is:\n" + cidlacString);
TextView myOperator = (TextView)findViewById(R.id.myoperator);
myOperator.setText("\nYour GSM operator is:\n" + operator);
TextView myispText = (TextView)findViewById(R.id.myispText);
myispText.setText("\nYour current ISP is:\n" + isp);
}
#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;
}
}
Code contains no errors !!
if its any use here's my Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.locationmobileuser"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.locationtheapp.LocationTheApp"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
Tried to toggle the package name in the Manifest between locationmobileuser and locationtheapp but still app crashes !!
As i said used to work like a charm in my previous projects !!
LOG:
06-18 05:36:54.502: E/Trace(992): error opening trace file: No such file or directory (2)
06-18 05:36:54.852: D/dalvikvm(992): newInstance failed: no <init>()
06-18 05:36:54.862: D/AndroidRuntime(992): Shutting down VM
06-18 05:36:54.862: W/dalvikvm(992): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-18 05:36:55.002: E/AndroidRuntime(992): FATAL EXCEPTION: main
06-18 05:36:55.002: E/AndroidRuntime(992): java.lang.RuntimeException: Unable toinstantiate activity ComponentInfo{com.example.locationmobileuser/com.example.locationmobileuser.LocationMobileUser}: java.lang.InstantiationException: can't instantiate class com.example.locationmobileuser.LocationMobileUser; no empty constructor
06-18 05:36:55.002: E/AndroidRuntime(992): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.os.Handler.dispatchMessage(Handler.java:99)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.os.Looper.loop(Looper.java:137)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-18 05:36:55.002: E/AndroidRuntime(992): at java.lang.reflect.Method.invokeNative(Native Method)
06-18 05:36:55.002: E/AndroidRuntime(992): at java.lang.reflect.Method.invoke(Method.java:511)
06-18 05:36:55.002: E/AndroidRuntime(992): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-18 05:36:55.002: E/AndroidRuntime(992): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-18 05:36:55.002: E/AndroidRuntime(992): at dalvik.system.NativeStart.main(Native Method)
06-18 05:36:55.002: E/AndroidRuntime(992): Caused by: java.lang.InstantiationException: can't instantiate class com.example.locationmobileuser.LocationMobileUser; no empty constructor
06-18 05:36:55.002: E/AndroidRuntime(992): at java.lang.Class.newInstanceImpl(Native Method)
06-18 05:36:55.002: E/AndroidRuntime(992): at java.lang.Class.newInstance(Class.java:1319)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
06-18 05:36:55.002: E/AndroidRuntime(992): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
06-18 05:36:55.002: E/AndroidRuntime(992): ... 11 more
Any help would be really appreciated !!

see the package name of menifest
package="com.example.locationmobileuser
and activity package name both should be same change this package
<activity
android:name="com.example.locationtheapp.LocationTheApp"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

you need to add empty constructor in your locationmobileuser class.
public LocationMobileUser(){
}

don't need to do all these things , just go to old project and right click on the project ->> refactor to rename project name or package name