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Error - splash screen, android app

问题描述:

I'm an android newbie

I want to make a splash screen for my android app. My app doesn't continue after splash screen - Application has stopped. Where is a problem?

Here's my SplashScreen.java

public class SplashScreen extends AppCompatActivity {

private static int SPLASH_TIME_OUT = 1500;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_splash_screen);

new Handler().postDelayed(new Runnable() {

@Override

public void run() {

Intent i = new Intent(SplashScreen.this, MainActivity.class);

startActivity(i);

finish();

}

}, SPLASH_TIME_OUT);

}}

Here's the AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.marcin.wirtualnyportfel">

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:supportsRtl="true"

android:theme="@style/AppTheme">

<activity

android:name=".SplashScreen"

android:label="@string/app_name"

android:screenOrientation="portrait"

android:theme="@style/AppTheme.NoActionBar">

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

And here goes the logcat

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.marcin.wirtualnyportfel/com.example.marcin.wirtualnyportfel.MainActivity}: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)

at android.app.ActivityThread.-wrap12(ActivityThread.java)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:154)

at android.app.ActivityThread.main(ActivityThread.java:6077)

at java.lang.reflect.Method.invoke(Native Method)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

Caused by: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.

at android.support.v7.app.AppCompatDelegateImplV9.setSupportActionBar(AppCompatDelegateImplV9.java:199)

at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:130)

at com.example.marcin.wirtualnyportfel.MainActivity.onCreate(MainActivity.java:34)

at android.app.Activity.performCreate(Activity.java:6664)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)

at android.app.ActivityThread.-wrap12(ActivityThread.java)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:154)

at android.app.ActivityThread.main(ActivityThread.java:6077)

at java.lang.reflect.Method.invoke(Native Method)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

网友答案:

use android:theme="@style/AppTheme.NoActionBar" for your MainActivity

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