IWindowManager.injectKeyEvent模拟按键

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
Java代码 复制代码  收藏代码
  1. package org.anddev.android.simualtekeys;   
  2.   
  3. import android.app.Activity;   
  4. import android.os.Bundle;   
  5. import android.os.DeadObjectException;   
  6. import android.os.ServiceManager;   
  7. import android.view.IWindowManager;   
  8. import android.view.KeyEvent;   
  9. import android.view.Menu;   
  10. import android.view.View;   
  11. import android.view.View.OnClickListener;   
  12.   
  13. public class SimualteKeyInput extends Activity {   
  14.   
  15.      /* The WindowManager capable of injecting keyStrokes. */  
  16.      final IWindowManager windowManager = IWindowManager.Stub   
  17.                .asInterface(ServiceManager.getService("window"));   
  18.   
  19.      /** Called when the activity is first created. */  
  20.      @Override  
  21.      public void onCreate(Bundle icicle) {   
  22.           super.onCreate(icicle);   
  23.           setContentView(R.layout.main);   
  24.              
  25.           /* Make the button do the menu-popup. */  
  26.           this.findViewById(R.id.cmd_simulate_key).setOnClickListener(   
  27.                     new OnClickListener() {   
  28.                          @Override  
  29.                          public void onClick(View arg0) {   
  30.                               /* Start the key-simulation in a thread 
  31.                                * so we do not block the GUI. */  
  32.                               new Thread(new Runnable() {   
  33.                                    public void run() {   
  34.                                         /* Simulate a KeyStroke to the menu-button. */  
  35.                                         simulateKeystroke(KeyEvent.KEYCODE_SOFT_LEFT);   
  36.                                    }   
  37.                               }).start(); /* And start the Thread. */  
  38.                          }   
  39.                     });   
  40.      }   
  41.         
  42.      /** Create a dummy-menu. */  
  43.      @Override  
  44.      public boolean onCreateOptionsMenu(Menu menu) {   
  45.           boolean supRetVal = super.onCreateOptionsMenu(menu);   
  46.           menu.add(00"Awesome it works =)");   
  47.           return supRetVal;   
  48.      }   
  49.   
  50.      /** Wrapper-function taking a KeyCode. 
  51.       * A complete KeyStroke is DOWN and UP Action on a key! */  
  52.      private void simulateKeystroke(int KeyCode) {   
  53.           doInjectKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyCode));   
  54.           doInjectKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyCode));   
  55.      }   
  56.   
  57.      /** This function actually handles the KeyStroke-Injection. */  
  58.      private void doInjectKeyEvent(KeyEvent kEvent) {   
  59.           try {   
  60.                /* Inject the KeyEvent to the Window-Manager. */  
  61.                windowManager.injectKeyEvent(kEvent.isDown(), kEvent.getKeyCode(),   
  62.                          kEvent.getRepeatCount(), kEvent.getDownTime(), kEvent   
  63.                                    .getEventTime(), true);   
  64.           } catch (DeadObjectException e) {   
  65.                e.printStackTrace();   
  66.           }   
  67.      }   
  68. }  
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:

    androidrientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Simulate Menu Key Press"
    />
 
 
 
给个链接: http://blog.csdn.net/xudongdong99/article/details/8857173

你可能感兴趣的:(android基础知识)