我正在尝试调用当我们按下电源按钮时出现的关机对话框。但我想从一个Android应用程序或JUnit测试用例中完成此任务。在这种情况下，我将选择最可行的方法。我一直在尝试做这件事，但没有成功。我正在尝试使用以下五种方法：
第一种方法：
long eventTime = SystemClock.uptimeMillis(); boolean
dispateched = launcherButtonWInst.dispatchKeyEvent(new
KeyEvent(eventTime, eventTime, KeyEvent.ACTION_DOWN,
KeyEvent.KEYCODE_POWER, 0, 0, 0, 0, 0) );
Log.i(LOG_TAG,String.valueOf(dispateched)); boolean
dispateched2=launcherButtonWInst.dispatchKeyEvent(new
KeyEvent(eventTime+2000, eventTime+2000, KeyEvent.ACTION_UP,
KeyEvent.KEYCODE_POWER, 0, 0, 0, 0, 0) );
Log.i(LOG_TAG,String.valueOf(dispateched2));
第二种方法：
private void generateKeys() {
// Obtain the WindowManager system service interface
IBinder wmbinder = ServiceManager.getService("window");
Log.d(LOG_TAG, "WindowManager: " + wmbinder);
IWindowManager wm = IWindowManager.Stub.asInterface(wmbinder);
keyUpDown(wm, KeyEvent.KEYCODE_POWER);
}
private void keyUpDown(IWindowManager wm, int keycode) {
try {
Log.d(LOG_TAG, "keyDown: " + keycode);
wm.injectKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, keycode), true);
Log.d(LOG_TAG, "keyUp: " + keycode);
wm.injectKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, keycode), true);
} catch (RemoteException e) {
// TODO Auto-generated catch block
Log.e("ERROR!!!!!", e.toString());
e.printStackTrace();
}
}
第三种方法：
Instrumentation inst = new Instrumentation();
inst.sendKeyDownUpSync(KeyEvent.KEYCODE_POWER);
第四种方法：
try {
long now =SystemClock.uptimeMillis();
KeyEvent down = new KeyEvent(now, now,
KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_POWER, 0);
Log.d( LOG_TAG,down.toString() );
KeyEvent up = new KeyEvent(now+2000, now+2000,
KeyEvent.ACTION_UP, KeyEvent.KEYCODE_POWER, 0);
Log.d( LOG_TAG,up.toString() );
(IWindowManager.Stub.asInterface(ServiceManager.getService("window"))).injectKeyEvent(down,
true);
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
(IWindowManager.Stub.asInterface(ServiceManager.getService("window"))).injectKeyEvent(up,
true);
} catch (RemoteException e) {
Log.d("LOGTAG",
"SendKeyEvent exception:"+e.getMessage());
第五种方法：
try {
Context mContext = getBaseContext();
Dialog dialog=new Dialog(mContext);
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
ShutdownThread.shutdown(mContext, true);
} catch (Exception e) {
Log.e("ERROR!!!", e.toString());
e.printStackTrace();
}
===================================================================
但是我尝试了它们所有的方法都不起作用。第五种方法是调用ShutdownThread类的shutdown()方法。但是它给我返回以下错误：
07-05 10:18:21.489: W/System.err(709): android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@4104d798 -- permission denied for this window type
07-05 10:18:21.499: W/System.err(709): at android.view.ViewRootImpl.setView(ViewRootImpl.java:537)
07-05 10:18:21.499: W/System.err(709): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:301)
07-05 10:18:21.499: W/System.err(709): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215)
07-05 10:18:21.499: W/System.err(709): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140)
07-05 10:18:21.499: W/System.err(709): at android.app.Dialog.show(Dialog.java:278)
07-05 10:18:21.499: W/System.err(709): at com.android.internal.app.ShutdownThread.shutdown(ShutdownThread.java:124)
07-05 10:18:21.499: W/System.err(709): at aexp.keygen.KeyGen$1.onClick(KeyGen.java:47)
07-05 10:18:21.499: W/System.err(709): at android.view.View.performClick(View.java:3511)
07-05 10:18:21.499: W/System.err(709): at android.view.View$PerformClick.run(View.java:14105)
07-05 10:18:21.509: W/System.err(709): at android.os.Handler.handleCallback(Handler.java:605)
07-05 10:18:21.509: W/System.err(709): at android.os.Handler.dispatchMessage(Handler.java:92)
07-05 10:18:21.509: W/System.err(709): at android.os.Looper.loop(Looper.java:137)
07-05 10:18:21.509: W/System.err(709): at android.app.ActivityThread.main(ActivityThread.java:4424)
07-05 10:18:21.509: W/System.err(709): at java.lang.reflect.Method.invokeNative(Native Method)
07-05 10:18:21.509: W/System.err(709): at java.lang.reflect.Method.invoke(Method.java:511)
07-05 10:18:21.509: W/System.err(709): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
07-05 10:18:21.509: W/System.err(709): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
07-05 10:18:21.509: W/System.err(709): at dalvik.system.NativeStart.main(Native Method)
其他方法没有抛出任何错误。我需要帮助完成这个任务，无论采用哪种方法，即使必须调用本地方法来完成，我也会这样做，但是我必须显示关闭UI。
谢谢
Ashwani