私はアンドロイド開発が初めてです。このリンクに従って、アラート ダイアログを作成しています。しかし、私は NoClassDefFound エラーを受け取っています
newFragment.show(getFragmentManager(), "dialog");
編集：スタックトレース
04-19 06:40:08.640: E/AndroidRuntime(1656): 致命的な例外: メイン 04-19 06:40:08.640: E/AndroidRuntime(1656): java.lang.NoClassDefFoundError: org.poovelil.gpstest.MainActivity$ MyAlertDialogFragment 04-19 06:40:08.640: E/AndroidRuntime(1656): org.poovelil.gpstest.MainActivity.onCreate(MainActivity.java:37) 04-19 06:40:08.640: E/AndroidRuntime(1656): android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1072) 04-19 06:40:08.640: E/AndroidRuntime(1656): android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1836) 04-19 06 :40:08.640: E/AndroidRuntime(1656): android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1893) 04-19 06:40:08.640: E/AndroidRuntime(1656): android.app.ActivityThread で。アクセス $1500 (ActivityThread.java:135) 04-19 06:40:08.640:E/AndroidRuntime(1656): android.app.ActivityThread$H.handleMessage(ActivityThread.java:1054) 04-19 06:40:08.640: E/AndroidRuntime(1656): android.os.Handler.dispatchMessage(Handler) .java:99) 04-19 06:40:08.640: E/AndroidRuntime(1656): android.os.Looper.loop(Looper.java:150) 04-19 06:40:08.640: E/AndroidRuntime(1656) ): android.app.ActivityThread.main(ActivityThread.java:4389) 04-19 06:40:08.640: E/AndroidRuntime(1656): java.lang.reflect.Method.invokeNative(ネイティブ メソッド) 04-19 で06:40:08.640: E/AndroidRuntime(1656): java.lang.reflect.Method.invoke(Method.java:507) 04-19 06:40:08.640: E/AndroidRuntime(1656): com.android .internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 04-19 06:40:08.640: E/AndroidRuntime(1656): com.android.internal.os.ZygoteInit で。メイン (ZygoteInit.java:607) 04-19 06:40:08.640: E/AndroidRuntime (1656): dalvik.system.NativeStart.main (ネイティブ メソッド) で
私のコードは以下です。
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
boolean gpsOn = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
boolean networkOn = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if(!gpsOn) {
Toast.makeText(getApplicationContext(), "GPS Provider is off", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(), "GPS Provider is on", Toast.LENGTH_SHORT).show();
}
if(!networkOn) {
Toast.makeText(getApplicationContext(), "Network provider is off", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(), "Network provider is on", Toast.LENGTH_LONG).show();
}
if(!networkOn || !gpsOn) {
DialogFragment newFragment = MyAlertDialogFragment.newInstance(1);
newFragment.show(getFragmentManager(), "dialog");
//startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
}
@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 static class MyAlertDialogFragment extends DialogFragment {
public static MyAlertDialogFragment newInstance(int title) {
MyAlertDialogFragment frag = new MyAlertDialogFragment();
Bundle args = new Bundle();
args.putInt("title", title);
frag.setArguments(args);
return frag;
}
public Dialog onCreateDialog(Bundle savedInstanceState) {
int title = getArguments().getInt("title");
return new AlertDialog.Builder(getActivity())
//.setIcon(R.drawable.alert_dialog_icon)
.setTitle(title)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
//((FragmentAlertDialog) getActivity()).doPositiveClick();
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
}
})
.create();
}
}