android反射方式访问内部类成员

//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 }; 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());
 
 
 转自：http://www.cnblogs.com/wanqieddy/archive/2011/10/25/2224200.html

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