利用java反射机制,使用android系统的内部类成员函数

			//访问某个属性
            Context mmsCtx = createPackageContext("com.android.lockscreen",  
			        Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY);  
			Class<?> maClass = Class.forName("com.android.lockscreen.LockScreenActivity", true, mmsCtx.getClassLoader());  
			
			Object maObject = maClass.newInstance();
			Field f_mPm = maClass.getDeclaredField("TAG");  
			f_mPm.setAccessible(true);              
				Log.i(LOG_TAG, "___________________________________________obj:"+f_mPm.get(maObject));

  

//访问方法

    	
//访问
try {
			Context mmsCtx = createPackageContext("com.android.lockscreen",  
			        Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY);  
			Class<?> maClass = Class.forName("com.android.lockscreen.LockScreenActivity", true, mmsCtx.getClassLoader());  
			
			Object maObject = maClass.newInstance();
			Field f_mPm = maClass.getDeclaredField("TAG");  
			
			//maClass.getDeclaredMethod("", parameterTypes);
			f_mPm.setAccessible(true);              
			Log.i(LOG_TAG, "___________________________________________obj:"+f_mPm.get(maObject));
				
			
				Class[] resource = new Class[]{Context.class};
				Object[] resourceObj = new Object[]{mmsCtx};
				
				Method addsMethod = maClass.getDeclaredMethod("getLockScreenView", resource);
				addsMethod.setAccessible(true);
				
				View addsResult = (View)addsMethod.invoke(maObject, resourceObj);
				Log.i(LOG_TAG, "___________________________________________addsResult:"+addsResult);
				
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

//定义被访问

public class LockScreenActivity extends Activity {
		
	private String TAG = "LockScreenActivity";
	//private LockScreen mScreen = new LockScreen(LockScreenActivity.this);
	
	private LockScreen getLockScreenView(Context context){
		
		Log.i(TAG, "_________________________________________context:"+context);
		return new LockScreen(context);
	}
	
}

  

//获取setting包的的Context  
            Context mmsCtx = createPackageContext("com.android.settings",  
                    Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY);  
            //使用setting的classloader加载com.android.settings.ManageApplications类  
            Class<?> maClass = Class.forName("com.android.settings.ManageApplications", true, mmsCtx.getClassLoader());  
            //创建它的一个对象  
            Object maObject = maClass.newInstance();  
              
            /* 
             * 将私有域mPm赋值。因为mPm在SizeObserver的invokeGetSize中用到了, 
             * 却因为没有执行onCreate而没有初始化,所以要在此处初始化。 
             */  
            Field f_mPm = maClass.getDeclaredField("mPm");  
            f_mPm.setAccessible(true);              
            f_mPm.set(maObject, mmsCtx.getPackageManager());  
              

  

posted @ 2011-10-25 17:36 wanqi Views(...) Comments(...) Edit 收藏