程序里模拟按键敲击
描述: IWindowManager 提供了模拟 KeyEvents的简单方法，名字叫做 IWindowManager.injectKeyEvent(...). 要模拟KeyStroke（按键敲击）, 我们需要模拟一个 指定KeyCode 的 KeyEvent.ACTION_DOWN 和 KeyEvent.ACTION_UP.
在这个例子里我们将要模拟 Menu按键的 KeyStroke ， 以使 Menu 弹出.
下面是这个例子的源码
package org.anddev.android.simualtekeys;import android.app.Activity;import android.os.Bundle;import android.os.DeadObjectException;import android.os.ServiceManager;import android.view.IWindowManager;import android.view.KeyEvent;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;public class SimualteKeyInput extends Activity { /* The WindowManager capable of injecting keyStrokes. */ final IWindowManager windowManager = IWindowManager.Stub .asInterface(ServiceManager.getService("window")); /** Called when the activity is first created. */ @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); /* Make the button do the menu-popup. */ this.findViewById(R.id.cmd_simulate_key).setOnClickListener( new OnClickListener() { @Override public void onClick(View arg0) { /* Start the key-simulation in a thread * so we do not block the GUI. */ new Thread(new Runnable() { public void run() { /* Simulate a KeyStroke to the menu-button. */ simulateKeystroke(KeyEvent.KEYCODE_SOFT_LEFT); } }).start(); /* And start the Thread. */ } }); } /** Create a dummy-menu. */ @Override public boolean onCreateOptionsMenu(Menu menu) { boolean supRetVal = super.onCreateOptionsMenu(menu); menu.add(0, 0, "Awesome it works =)"); return supRetVal; } /** Wrapper-function taking a KeyCode. * A complete KeyStroke is DOWN and UP Action on a key! */ private void simulateKeystroke(int KeyCode) { doInjectKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyCode)); doInjectKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyCode)); } /** This function actually handles the KeyStroke-Injection. */ private void doInjectKeyEvent(KeyEvent kEvent) { try { /* Inject the KeyEvent to the Window-Manager. */ windowManager.injectKeyEvent(kEvent.isDown(), kEvent.getKeyCode(), kEvent.getRepeatCount(), kEvent.getDownTime(), kEvent .getEventTime(), true); } catch (DeadObjectException e) { e.printStackTrace(); } }}
XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
androidrientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Buttonid="@+id/cmd_simulate_key"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Simulate Menu Key Press"
/>
</LinearLayout>
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