apk android ActivityNotFoundException

Question

I want to run an implicitly tried with the following code:

MenuActivity.java

public class MenuActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_menu);

    Button btn = (Button) findViewById(R.id.btnVideo);
    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent();
            intent.setAction(Intent.ACTION_VIEW);
            Uri intentUri = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.pp);
            intent.setDataAndType(intentUri,"audio/mp3");
            startActivity(intent);
        }
    });


}

}

AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<application
    android:allowBackup="true"
    android:icon="@drawable/iconopp14"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.powerpump.MainActivity"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".MenuActivity" />
</application>

You need to specify more parameters in AndroidManifest.xml?

Thanks.

Answer 1

我猜你只需为证明注册MenuActivity在你的AndroidManifest.xml 这里 。

Answer 2

Looking at your code, it looks like you created a MenuActivity class after creating an android project with default settings and MenuActivity is your main activity(Launcher) class.

Just replace the MainActivity with MenuActivity in your AndroidManifest.xml file and delete

 <activity android:name=".MenuActivity" />

OR

Replace the class name to MainActivity from MenuActivity in your java code as follows

public class MainActivity extends Activity {
   ......

OR

use this as your android manifest.xml file

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
  <application
     android:allowBackup="true"
     android:icon="@drawable/iconopp14"
     android:label="@string/app_name"
     android:theme="@style/AppTheme" >

    <activity android:name="com.powerpump.MenuActivity"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen">

        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
 </application>