Here is the code. It doesn’t give any error in console. I have made another activity class test_me.java. When I click on the dialog option, it gives the error that ” Unfortunately the app stopped working”. Please tell me what is the problem here.
public class TestActivity extends Activity {
Context context=this;
Intent testIntent;
Intent progIntent;
Intent settingIntent;
Intent resultIntent; public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
Button b1 = (Button)findViewById(R.id.button1);
b1.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
if(v.getId()==R.id.button1)
{ final CharSequence[] items = {"Test", "ProgMode", "Settings","Result"};
AlertDialog.Builder builder = new AlertDialog.Builder(context)
.setTitle("Menu Options")
.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
if(items[item]=="Test")
{testIntent = new Intent(TestActivity.this, test_me.class);
startActivity(testIntent);
}
else if(items[item]=="ProgMode")
{progIntent = new Intent(TestActivity.this,prog_mode.class);
startActivity(progIntent);
}
else if(items[item]=="Settings")
{settingIntent = new Intent(TestActivity.this,setting_mode.class);
startActivity(settingIntent);
}
else if(items[item]=="Results")
{
resultIntent = new Intent(TestActivity.this,result_mode.class);
startActivity(resultIntent);
}
Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("Back",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
}
Here is the Log
06-07 17:44:15.598: I/dalvikvm(654): threadid=3: reacting to signal 3
06-07 17:44:15.978: I/dalvikvm(654): Wrote stack traces to '/data/anr/traces.txt'
06-07 17:44:16.088: I/dalvikvm(654): threadid=3: reacting to signal 3
06-07 17:44:16.148: I/dalvikvm(654): Wrote stack traces to '/data/anr/traces.txt'
06-07 17:44:16.538: D/android.widget.GridLayout(654): vertical constraints: y3 - y0 > 637, y1 - y0 > 129, y2 - y1 > 135, y3 - y0 < 618 are inconsistent; permanently removing: y3 - y0 < 618.
06-07 17:44:16.608: I/dalvikvm(654): threadid=3: reacting to signal 3
06-07 17:44:16.638: I/dalvikvm(654): Wrote stack traces to '/data/anr/traces.txt'
06-07 17:44:16.858: D/gralloc_goldfish(654): Emulator without GPU emulation detected.
06-07 17:44:17.108: I/dalvikvm(654): threadid=3: reacting to signal 3
06-07 17:44:17.139: I/dalvikvm(654): Wrote stack traces to '/data/anr/traces.txt'
06-07 17:44:21.638: D/AndroidRuntime(654): Shutting down VM
06-07 17:44:21.638: W/dalvikvm(654): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
06-07 17:44:21.688: E/AndroidRuntime(654): FATAL EXCEPTION: main
06-07 17:44:21.688: E/AndroidRuntime(654): android.content.ActivityNotFoundException: Unable to find explicit activity class {achira.test/achira.test.test_me}; have you declared this activity in your AndroidManifest.xml?
06-07 17:44:21.688: E/AndroidRuntime(654): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1508)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.app.Activity.startActivityForResult(Activity.java:3190)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.app.Activity.startActivity(Activity.java:3297)
06-07 17:44:21.688: E/AndroidRuntime(654): at achira.test.AchActivity$1$1.onClick(AchActivity.java:84)
06-07 17:44:21.688: E/AndroidRuntime(654): at com.android.internal.app.AlertController$AlertParams$3.onItemClick(AlertController.java:924)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.widget.AdapterView.performItemClick(AdapterView.java:292)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.widget.AbsListView.performItemClick(AbsListView.java:1058)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2514)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.widget.AbsListView$1.run(AbsListView.java:3168)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.os.Handler.handleCallback(Handler.java:605)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.os.Handler.dispatchMessage(Handler.java:92)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.os.Looper.loop(Looper.java:137)
06-07 17:44:21.688: E/AndroidRuntime(654): at android.app.ActivityThread.main(ActivityThread.java:4424)
06-07 17:44:21.688: E/AndroidRuntime(654): at java.lang.reflect.Method.invokeNative(Native Method)
06-07 17:44:21.688: E/AndroidRuntime(654): at java.lang.reflect.Method.invoke(Method.java:511)
06-07 17:44:21.688: E/AndroidRuntime(654): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-07 17:44:21.688: E/AndroidRuntime(654): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-07 17:44:21.688: E/AndroidRuntime(654): at dalvik.system.NativeStart.main(Native Method)
06-07 17:44:22.349: I/dalvikvm(654): threadid=3: reacting to signal 3
06-07 17:44:22.388: I/dalvikvm(654): Wrote stack traces to '/data/anr/traces.txt'
06-07 17:44:24.118: I/Process(654): Sending signal. PID: 654 SIG: 9
i think this
should come inside onCreate
also dismiss your dialog
reset your adb or restart your emulator you will get errors in logcat
your logcat says
that means you haven’t declared your activities in manifest
declare activity like this inside application tag