android 通過反射訪問內部類（也可訪問其他apk中的類）
阿新 • • 發佈：2018-12-26
//訪問某個屬性
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));
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//訪問方法
//訪問
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 =newClass[]{Context.class};
resourceObj =newObject[]{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();
}
//定義被訪問
public
class LockScreenActivity extendsActivity {
privateString TAG ="LockScreenActivity";
//private LockScreen mScreen = new LockScreen(LockScreenActivity.this);
privateLockScreen getLockScreenView(Context context){
Log.i(TAG,"context:"+context);
returnnewLockScreen(context);
}
}
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//獲取setting包的的Context
Context mmsCtx = createPackageContext("com.android.settings",
Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY);
//使用setting的classloader載入com.android.settings.ManageApplications類
Class<?> maClass = Class.forName("com.android.settings.ManageApplications",true,
mmsCtx.getClassLoader());
//建立它的一個物件
Object maObject = maClass.newInstance();
/*
* 將私有域mPm賦值。因為mPm在SizeObserver的invokeGetSize中用到了，
* 卻因為沒有執行onCreate而沒有初始化，所以要在此處初始化。
*/
Field f_mPm = maClass.getDeclaredField("mPm");
f_mPm.setAccessible(true);
f_mPm.set(maObject, mmsCtx.getPackageManager());
轉自：http://www.cnblogs.com/wanqieddy/archive/2011/10/25/2224200.html