android - ActivityNotFoundException onBackPressed 和 onSaveInstanceState

Question

致命异常:android.content.ActivityNotFoundException:无法找到显式 Activity 类 {Myclass}；您是否已在 AndroidManifest.xml 中声明此 Activity ？

在这两个重写的方法中:

@Override
protected void onSaveInstanceState(Bundle outState) {
    if(result != null){
        outState = result.saveInstanceState(outState);
        super.onSaveInstanceState(outState);
    }
}

@Override
public void onBackPressed() {
    if (result != null && result.isDrawerOpen()) {
        result.closeDrawer();
    } else {
        super.onBackPressed();
    }
}

Logcat 错误:

Fatal Exception: android.content.ActivityNotFoundException: Unable to find explicit activity class {Myclass}; have you declared this activity in your AndroidManifest.xml? at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1801) at android.app.Instrumentation.execStartActivity(Instrumentation.java:1514) at android.app.Activity.startActivityForResult(Activity.java:3951) at android.app.Activity.startActivityForResult(Activity.java:3912) at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:784) at android.app.Activity.startActivity(Activity.java:4235) at android.app.Activity.startActivity(Activity.java:4203) at isd.com.al.posapp.DrawerActivity.restart(DrawerActivity.java:737) at isd.com.al.posapp.DrawerActivity$7.onClick(DrawerActivity.java:728) at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:163) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5527) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)

Answer 1

在项目的 AndroidManifest.xml 文件中声明您的 Activity ，如下所示

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