I am trying to send some commands over telnet.
Everything works fine when executed locally on a PC on basis of a swing GUI, but when using the same code on Android, the app freezes for a few seconds and the commands are not carried out (same result on emulator and real device), although it runs to the end. No error message is being thrown, but after this procedure the device is not reachable via Telnet, not even via PC (restart of target device is then necessary). What I do not understand is that it seems that the 500 milliseconds restriction I set is being ignored on Android.
I am a novice on Android so please bear with me. Glad for any help.
package com.test.test.remote;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import android.os.Bundle;
import android.os.StrictMode;
import android.app.Activity;
import android.util.Log;
import android.view.View;
public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
setContentView(R.layout.activity_main);
}
public void calculate(View view) throws Exception {
System.out.println("Calc button executed");
command("MO");
}
public String command(String cmd) {
String output = "test";
Log.e("Msg", "command reached");
Log.e("Msg", cmd);
Socket pingSocket = null;
PrintWriter out = null;
BufferedReader in = null;
pingSocket = new Socket();
try {
pingSocket.connect(new InetSocketAddress("10.10.10.107", 23), 500);
out = new PrintWriter(pingSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(
pingSocket.getInputStream()));
out.println(cmd);
output = in.readLine();
out.close();
in.close();
pingSocket.close();
System.out.println(output);
Log.e("Msg", "end of command reached");
} catch (Exception e) {
Log.e("com.example.test.MainActivity", e.getMessage());
e.printStackTrace();
}
return output;
}
}
XML:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="24dp"
android:layout_marginTop="31dp"
android:ems="10"
android:inputType="numberDecimal|numberSigned" >
<requestFocus />
</EditText>
<RadioGroup
android:id="#+id/radioGroup1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/editText1"
android:layout_below="#+id/editText1"
android:layout_marginTop="28dp" >
<RadioButton
android:id="#+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="#string/kmh" />
</RadioGroup>
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/radioGroup1"
android:layout_centerVertical="true"
android:onClick="calculate"
android:text="#string/calc" />
</RelativeLayout>
Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.test.remote"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.INTERNET"/>
<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>
</application>
</manifest>
Related
We are having a resource error when we try to run our code.
package com.example.searchtest;
import android.app.Activity;
import android.app.SearchManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
public class GoogleSearchIntentActivity extends Activity {
private EditText editTextInput;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextInput = (EditText) findViewById(R.id.editTextInput);
}
public void onSearchClick(View v)
{
try {
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
String term = editTextInput.getText().toString();
intent.putExtra(SearchManager.QUERY, term);
startActivity(intent);
} catch (Exception e) {
// TODO: handle exception
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:padding="10dp">
<edittext
android:id="#+id/editTextInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Enter search text">
<requestfocus>
</requestfocus></edittext>
<button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"
android:layout_gravity="center"
android:onclick="onSearchClick"
android:layout_margintop="10dp">
</button></linearlayout>
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.searchtest">
<uses-permission android:name="android.permission.INTERNET">
</uses-permission>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".GoogleSearchIntentActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
these are our mainActivity.java, activity_main.xml, and AndroidManifest.xml codes from our app.
The error is within our public class GoogleSearchIntentActivity extends Activity
We are high school students trying to create an image search app for our computer science capstone class, we have been trying to fix this error without success, and our teacher is completely clueless.
Components in your xml file must have a first capitalized letter.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:padding="10dp">
<EditText
android:id="#+id/editTextInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Enter search text">
<requestFocus>
</requestFocus></EditText>
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"
android:layout_gravity="center"
android:onclick="onSearchClick"
android:layout_margintop="10dp">
</Button></LinearLayout>
i'm fairly new to coding but decided i would take the huge plunge into the ocean without knowing how to swim, anyway my button keeps failling to open my new activity when i click on it, instead it just crashes. when I run it on my emulator i get a message saying that it has stopped. I'm using a genymotion emulator and the darcula android studio version.
My main activity.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="wrap_content" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".MainActivity"
android:background="#drawable/background_black">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/unpressed_button"
android:background="#drawable/unpressed"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
style="?android:attr/borderlessButtonStyle" />
</RelativeLayout>
My second Activity.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:background="#drawable/background_black"
tools:context="quirkykoders.flash_flash.Pressed_Button">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/pressed_button"
android:background="#drawable/pressed"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
style="?android:attr/borderlessButtonStyle" />
</RelativeLayout>
My Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="quirkykoders.flash_flash" >
<application
android:allowBackup="true"
android:icon="#mipmap/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=".Pressed_Button"
android:label="#string/title_activity_pressed__button" >
<intent-filter>
<action android:name="android.intent.action.PRESSED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
My java
package quirkykoders.flash_flash;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
private static Button button_sbm;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
OnClickButtonListener();
}
public void OnClickButtonListener() {
button_sbm = (Button)findViewById(R.id.unpressed_button);
button_sbm.setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent ("quirkykoders.flash_flash.Pressed_Button");
startActivity(intent);
}
}
);
}
}
Any help will be greatly appreciated
When you want to create A new Activity you have to send two parameters in the intent object First is currentActivity name and the second is CallingActivity name
Intent intent=new Intent(MainActivity.this,Pressed_Button.class);
startActivity(intent);
I am using eclipse for developing a game for android. The game is pretty much finished but it won't launch correctly on my emulator of choice (BlueStacks).
It only shows a white screen and the infobar for about 0.5 seconds before crashing. App is still open in background after crashing but can't do or display anything.
I can compile and install the application and the syntax is correct... I assume that my mistake is somewhere in the manifest.
here is my manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="de.ralfkraemer.starsandstrikes"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="de.ralfkraemer.starsandstrikes.MainMenu"
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>
</manifest>
The following is my main activity class
package de.ralfkraemer.starsandstrikes;
import java.io.IOException;
import java.util.Random;
import de.ralfkraemer.starsandstrikes.R;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class MainMenu extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activitymainmenu);
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
ActionBar actionBar = getActionBar();
actionBar.hide();
randomizeFact();
}
// RANDOM FACT
String[] factresource = getResources().getStringArray(R.array.factres);
protected void randomizeFact(){
TextView randomFact = (TextView)findViewById(R.id.text1);
Random random = new Random();
int maxIndex = factresource.length;
int generatedIndex = random.nextInt(maxIndex);
randomFact.setText(factresource[generatedIndex]);
}
// START GAME
public void startGame(){
Game currentGame = new Game();
currentGame.setScore(0);
setContentView(R.layout.activitygame);
currentGame.running = true;
}
// PLAY STORE (RATE)
public void openPlayStore(){
Uri uri = Uri.parse("url");
Intent intent = new Intent (Intent.ACTION_VIEW, uri);
startActivity(intent);
}
public void goToAbout(){
setContentView(R.layout.activityabout);
}
public void goToHowToPlay(){
setContentView(R.layout.activityhowtoplay);
}
public void goToHighscores() throws IOException{
Highscores highscores = new Highscores();
setContentView(R.layout.activityhighscores);
}
}
And here is the main activity xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#drawable/background"
tools:context="${linearPackage}.${activityClass}" >
<ImageView
android:id="#+id/header"
android:contentDescription="#string/header_content"
android:src="#drawable/logo_mainmenu"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_marginTop="10dp" />
<Button
android:id="#+id/button_play"
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="65dp"
android:layout_marginRight="65dp"
android:text="#string/mm_button_play"
android:textSize="22sp"
android:onClick="startGame"
android:background="#drawable/button_default" />
<TextView
android:id="#+id/text1"
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:text="#string/mm_randomfact_placeholder"
android:textSize="16sp"
android:gravity="center"/>
<Button
android:id="#+id/button_randomfact"
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_marginTop="5dp"
android:layout_marginLeft="65dp"
android:layout_marginRight="65dp"
android:text="#string/mm_button_randomfact"
android:textSize="18sp"
android:onClick="randomizeFact"
android:background="#drawable/button_default" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:orientation="vertical"
android:baselineAligned="false" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:orientation="horizontal"
android:layout_weight="1" >
<Button
android:id="#+id/button_highscores"
android:layout_width="0dip"
android:layout_height="55dp"
android:layout_weight="1"
tools:ignore="NestedWeights"
android:text="#string/mm_button_highscores"
style="android:attr/buttonBarButtonStyle"
android:background="#drawable/button_default"
android:onClick="goToHighscores" />
<Button
android:id="#+id/button_howtoplay"
android:layout_width="0dip"
android:layout_height="55dp"
android:layout_weight="1"
tools:ignore="NestedWeights"
android:text="#string/mm_button_howtoplay"
style="android:attr/buttonBarButtonStyle"
android:background="#drawable/button_default"
android:onClick="goToHowToPlay" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:orientation="horizontal"
android:layout_weight="1" >
<Button
android:id="#+id/button_about"
android:layout_width="0dip"
android:layout_height="55dp"
android:layout_weight="1"
tools:ignore="NestedWeights"
android:text="#string/mm_button_about"
style="android:attr/buttonBarButtonStyle"
android:background="#drawable/button_default"
android:onClick="goToAbout" />
<Button
android:id="#+id/button_rate"
android:layout_width="0dip"
android:layout_height="55dp"
android:layout_weight="1"
tools:ignore="NestedWeights"
android:text="#string/mm_button_rate"
style="android:attr/buttonBarButtonStyle"
android:background="#drawable/button_default"
android:onClick="openPlayStore" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
You are calling getResources while the activity is instantiating on this line here:
// RANDOM FACT
String[] factresource = getResources().getStringArray(R.array.factres);
and the implied Activity.this object does not have a valid context, so it crashes. You need to call this in onCreate or in another method that is called after the object instantiates.
I am writing an app that will eventually use Bluetooth to get a value for two devices' proximity to one another. I am currently trying to use buttons and onClick/onclicklistener etc to bring switch screens from the main UI to a log in or sign up page. Now my app is forcing close on start up and I'm not sure why. Thanks for any help!!
MainActivity:
package com.example.chirp;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.content.Intent;
import android.os.Bundle;
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 {
BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter() ;
String status; {
if (bluetooth != null)
{
if (bluetooth.isEnabled())
{
String mydeviceaddress = bluetooth.getAddress();
String mydevicename = bluetooth.getName();
status = mydevicename + ":" + mydeviceaddress;
}
else
{
status = "Bluetooth is not Enabled.";
}
}
Toast.makeText(this, status, Toast.LENGTH_LONG).show();
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button loginbutton = (Button) findViewById(R.id.button1);
loginbutton.setOnClickListener(new OnClickListener(){
public void onClick(View v){
setContentView(R.layout.loginscreen);
}
});
}
#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;
}
public void newMessage(View v){
Intent intent = new Intent(this,loginscreen.class);
startActivity(intent);
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#7FFFD4"
android:padding="20dp"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<!-- <public void loginhere(View view) {
android:
}/>-->
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_gravity="center"
android:text="#string/hello_world"
android:textSize="50sp"
android:typeface="serif" />
<SeekBar
android:id="#+id/seekBar1"
android:layout_marginTop="100dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="32sp"
android:layout_gravity="center_horizontal"
android:text="Slide to Quick Find"
android:textAppearance="?android:attr/textAppearanceSmall" />
<Button
android:id="#+id/button2"
android:layout_width="396dp"
android:layout_height="100dp"
android:layout_marginLeft="75dp"
android:layout_marginTop="300dp"
android:textSize="50sp"
android:text="Sign Up" />
<Button
android:id="#+id/button1"
android:layout_width="396dp"
android:layout_height="100dp"
android:layout_marginLeft="75dp"
android:layout_marginTop="50dp"
android:textSize="50sp"
android:onClick="onclick"
android:text="Log In" />
</LinearLayout>
Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.chirp"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="18" />
<supports-screens
android:resizeable="true"
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:anyDensity="true"
android:requiresSmallestWidthDp="320"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.chirp.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="com.example.chirp.loginscreen"
android:label="CHIRP"
/>
</application>
</manifest>
loginscreen.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#7FFFD4"
android:padding="20dp"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".login" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Username"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/editText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textEmailAddress" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Password"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPassword" >
<requestFocus />
</EditText>
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Remember Username" />
/
</LinearLayout>
Move this code inside your onCreate method:
if (bluetooth != null) {
if (bluetooth.isEnabled()) {
String mydeviceaddress = bluetooth.getAddress();
String mydevicename = bluetooth.getName();
status = mydevicename + ":" + mydeviceaddress;
} else {
status = "Bluetooth is not Enabled.";
}
//etc...
Currently this code block is outside of any method of your activity and that is for sure not what you want to have.
Here is my login activity class where i want to do login after login it show the map but when i run the app it show unfortunately stopped login
loginActivity.java
package com.ivb.login;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class LoginActivity extends Activity{
EditText edtemail,edtPassword;
Button btnLogin;
String strUsername,strPassword;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.login);
edtemail = (EditText)this.findViewById(R.id.edt_email);
edtPassword = (EditText)this.findViewById(R.id.edt_passwrd);
btnLogin = (Button)this.findViewById(R.id.btnLogin);
btnLogin.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
strUsername = edtemail.getText().toString().trim();
strPassword = edtPassword.getText().toString().trim();
if(strUsername.equals("needin#gmail.com") && strPassword.equals("needin123"))
startActivity(new Intent(LoginActivity.this,LoginSuccess.class).putExtra("usr",(CharSequence)strUsername));
else
Toast.makeText(LoginActivity.this,"Invalid UserName or Password", Toast.LENGTH_LONG).show();
}
});
TextView registerScreen = (TextView) findViewById(R.id.link_to_register);
// Listening to register new account link
registerScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Switching to Register screen
Intent i = new Intent(getApplicationContext(), RegisterActivity.class);
startActivity(i);
}
});
}
}
loginsuccess.java
package com.ivb.login;
import javax.security.auth.PrivateCredentialPermission;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.widget.TextView;
import android.widget.Toast;
public class LoginSuccess extends Activity {
private GoogleMap googleMap;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.second);
try {
// Loading map
initilizeMap();
} catch (Exception e) {
e.printStackTrace();
}
Intent in = getIntent();
if (in.getCharSequenceExtra("usr") != null) {
final TextView setmsg = (TextView)findViewById(R.id.showmsg);
setmsg.setText("Welcome \n "+in.getCharSequenceExtra("usr"));
}
}
private void initilizeMap() {
if (googleMap == null) {
googleMap =((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),
"Sorry! unable to create maps", Toast.LENGTH_SHORT)
.show();
}
}
}
#Override
protected void onResume() {
super.onResume();
initilizeMap();
}
}
manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ivb.login"
android:versionCode="1"
android:versionName="1.0" >
<permission
android:name="com.ivb.login.permission.MAPS_RECEIVE"
android:protectionLevel="signature"></permission>
<uses-permission android:name="com.ivb.login.permission.MAPS_RECEIVE"/>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.ivb.login.LoginActivity"
android:label="#string/app_name"
android:screenOrientation="sensor">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.ivb.login.RegisterActivity"
android:label="Register New Account"></activity>
<activity android:name="com.ivb.login.LoginSuccess"></activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyC-2jAJ7MEkho_gJv7KLeb-tHrU2zHDUQU" />
<uses-library android:name="com.google.android.maps"/>
</application>
</manifest>
second.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".LoginSuccess" >
<LinearLayout android:id="#+id/header"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#layout/header_gradient"
android:paddingTop="5dip"
android:paddingBottom="5dip" >
<ImageView android:src="#drawable/logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"/>
</LinearLayout>
<TextView
android:id="#+id/showmsg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="Welcome"
android:textSize="20dip" >
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</TextView>
</RelativeLayout>
login.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#ffffff" >
<LinearLayout
android:id="#+id/header"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#layout/header_gradient" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/header"
android:orientation="vertical"
android:padding="10dip" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:src="#drawable/logo1" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Email"
android:textColor="#372c24" />
<EditText
android:id="#+id/edt_email"
android:layout_width="209dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="20dip"
android:layout_marginTop="5dip"
android:ems="10"
android:hint="Enter Email Address"
android:inputType="textEmailAddress"
android:singleLine="true"
android:typeface="normal" >
<requestFocus />
</EditText>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Password"
android:textColor="#372c24" />
<EditText
android:id="#+id/edt_passwrd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="5dip"
android:ems="10"
android:hint="Enter password"
android:inputType="textPassword"
android:password="true"
android:singleLine="true"
android:typeface="normal" />
<Button
android:id="#+id/btnLogin"
android:layout_width="133dp"
android:layout_height="32dp"
android:layout_gravity="center"
android:layout_marginTop="10dip"
android:background="#acd28a"
android:clickable="true"
android:gravity="center"
android:paddingLeft="15dip"
android:text="Login" />
<TextView
android:id="#+id/link_to_register"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="40dip"
android:layout_marginTop="40dip"
android:gravity="center"
android:text="Need an account?sign up"
android:textColor="#0b84aa"
android:textSize="20dip" />
</LinearLayout>
</RelativeLayout>
</ScrollView>
Change from
<TextView
android:id="#+id/showmsg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="Welcome"
android:textSize="20dip" >
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</TextView>
to
<TextView
android:id="#+id/showmsg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="Welcome"
android:textSize="20dip" >
</TextView>
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
this is because your < /TextView> was closed after fragment class so you got this error.
Also change here
startActivity(new Intent(LoginActivity.this,LoginSuccess.class).putExtra("usr",strUsername));
and also in your LoginSuccess Activity
Intent in = getIntent();
if (in.getStringExtra("usr") != null) {
final TextView setmsg = (TextView)findViewById(R.id.showmsg);
setmsg.setText("Welcome \n "+in.getStringExtra("usr"));
}
That means you have to declare this part in your manifest file...
<uses-feature android:glEsVersion="0x00020000" android:required="true/>
and must use latest updated Google Play Service.