这是我的 logcat 文件，它显示 Activity 未找到异常，即使我已在 list 文件中声明它。每当我在 eclipse avd 中启动我的应用程序时，都会弹出“不幸已停止”警告。请帮我解决这个问题。
12-15 07:42:47.833: E/AndroidRuntime(770): FATAL EXCEPTION: Thread-75
12-15 07:42:47.833: E/AndroidRuntime(770): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=my.example.myproject.SELECTION }
12-15 07:42:47.833: E/AndroidRuntime(770): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1622)
12-15 07:42:47.833: E/AndroidRuntime(770): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
12-15 07:42:47.833: E/AndroidRuntime(770): at android.app.Activity.startActivityForResult(Activity.java:3370)
12-15 07:42:47.833: E/AndroidRuntime(770): at android.app.Activity.startActivityForResult(Activity.java:3331)
12-15 07:42:47.833: E/AndroidRuntime(770): at android.app.Activity.startActivity(Activity.java:3566)
12-15 07:42:47.833: E/AndroidRuntime(770): at android.app.Activity.startActivity(Activity.java:3534)
12-15 07:42:47.833: E/AndroidRuntime(770): at my.example.myproject.FullscreenActivity$3.run(FullscreenActivity.java:72)
Java代码和 list 文件如下所示
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fullscreen);
final View controlsView = findViewById(R.id.fullscreen_content_controls);
final View contentView = findViewById(R.id.fullscreen_content);
iol = (Button)findViewById(R.id.iolCalculation);
help = (Button)findViewById(R.id.sHelp);
about = (Button)findViewById(R.id.sAbout);
Thread iolthread=new Thread(){
public void run(){
try{
iol.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
setContentView(R.layout.selection);
}
});
Intent iolIntent=new Intent("my.example.myproject.SELECTION");
startActivity(iolIntent);
}
finally{
finish();
}
}
};
iolthread.start();
list 文件
<application
android:allowBackup="true"
android:theme="@style/AppTheme">"
<activity
android:name=".FullscreenActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Selection"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
<action android:name="my.example.myproject.SELECTION" />
<category android:name="android.intent.category.DEFAULT" />
</activity>
</application>
我是 android 编程和堆栈溢出的初学者。如果有任何错误，请原谅我。 下面是我的主要 xml 文件
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/black"
tools:context=".FullscreenActivity" >
<!--
The primary full-screen view. This can be replaced with whatever view
is needed to present your content, e.g. VideoView, SurfaceView,
TextureView, etc.
-->
<TextView
android:id="@+id/fullscreen_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:keepScreenOn="true"/>
<!--
This FrameLayout insets its children based on system windows using
android:fitsSystemWindows.
-->
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/Black"
android:fitsSystemWindows="true" >
<LinearLayout
android:id="@+id/fullscreen_content_controls"
style="?buttonBarStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:background="@color/black_overlay"
android:orientation="horizontal"
tools:ignore="UselessParent" >
</LinearLayout>
<Button
style="@style/ButtonBarButton"
android:layout_width="222dp"
android:layout_height="62dp"
android:layout_marginLeft="45dp"
android:layout_marginTop="75dp"
android:background="@color/black"
android:paddingLeft="20dp"
android:id="@+id/iolCalculation"
android:text="@string/Button"
android:textColor="@color/WhiteSmoke"
android:textStyle="bold" />
<Button
style="@style/ButtonBarButton"
android:layout_width="222dp"
android:layout_height="62dp"
android:layout_marginLeft="45dp"
android:id="@+id/sHelp"
android:layout_marginTop="139dp"
android:background="@color/Black"
android:gravity="center"
android:paddingLeft="10dp"
android:text="@string/Button1"
android:textColor="@color/WhiteSmoke"
android:textStyle="bold" />
<Button
style="@style/ButtonBarButton"
android:layout_width="222dp"
android:layout_height="62dp"
android:id="@+id/sAbout"
android:layout_marginLeft="45dp"
android:layout_marginTop="203dp"
android:background="@color/Black"
android:paddingLeft="10dp"
android:text="@string/Button2"
android:textColor="@color/WhiteSmoke"
android:textStyle="bold" >
</Button>
</FrameLayout>
</FrameLayout>
最佳答案
写下代码
Intent mInSelection=new Intent(MainActivity.this,Selection.class);
startActivity(mInSelection);
代替
Intent iolIntent=new Intent("my.example.myproject.SELECTION");
startActivity(iolIntent);
并将以下代码写入您的 manifest.xml 文件
<activity
android:name=".Selection"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
代替
<activity
android:name=".Selection"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
<action android:name="my.example.myproject.SELECTION" />
<category android:name="android.intent.category.DEFAULT" />
</activity>
它将解决您的问题。
关于java - 即使在 list 中声明 Activity 也未找到异常，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13890486/