ich meine erste Android App schreibe, und ich bin mit diesem Problem fest:Android App stürzt nach startActivity Methode von Onclick Rückruf aufgerufen wird, manifestieren scheint ok
Ich möchte von MainActivity-AddExpense wechseln Aktivität nach einer FloatingButton geklickt wird, so schrieb ich diesen Code (innen protected void onCreate(Bundle savedInstanceState)
:
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(), AddExpense.class);
startActivity(intent);
}
});
AddExpense cla s sieht leicht wie diese
public class AddExpense extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_expense);
}
}
jedoch die Anwendung andauernd abstürzt, nachdem ich auf der fab klicken.
durch andere Antworten der Suche fand ich, dass in der Regel das Problem innerhalb des manifesten liegt, aber ich denke, das ist nicht mein Fall ist:
<?xml version="1.0" encoding="utf-8"?>
<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=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".AddExpense"
android:label="@string/app_name"></activity>
</application>
Jede Hilfe geschätzt extrem würde .
--EDIT-- logcat Bericht:
08-19 18:10:02.802 10393-10393/com.example.senso.budgetracker E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.senso.budgetracker, PID: 10393
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.senso.budgetracker/com.example.senso.budgetracker.AddExpense}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2728)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2814)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6290)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.support.v7.app.AppCompatDelegateImplV9.createSubDecor(AppCompatDelegateImplV9.java:356)
at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:325)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:286)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.example.senso.budgetracker.AddExpense.onCreate(AddExpense.java:11)
at android.app.Activity.performCreate(Activity.java:6760)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1134)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2681)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2814)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6290)
at java.lang.reflect.Method.invoke(Native Method)
show logcat Fehlermeldung – umuieme
Sehen Sie sich die [stackoverflow] (http://stackoverflow.com/questions/23353173) an, um die Ursache des Absturzes festzustellen. –
ist activity_add_expense gültig? – cliff2310