1、首先在AndroidManifest.xml中的<manifest>中加入android:sharedUserId="共享id"----具有相同id的apk可以不受限制访问。
2、根据包名创建Context,在Activity下有提供方法createPackageContext能够依据包名创建。
3、获取共享的Apk资源。
注意:
1、Activity中的findViewById()与View中的findViewById()区别在于:
Activity需要对setContextView()后的Layout才能由findViewById()获得View。
View只需要有对象即可由findViewById()获得在View中包含id的View。
2、在资源获取方面主要获取那个apk下的资源主要是由Context决定。
在资源apk没安装前:
资源文件安装后:
主apk包名:com.app.share;
资源apk包名:com.app.share2;
主Activity中获取资源apk中R,并且生成Layout对id为button1的按钮设置监听。
public class StartAct extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // setContentView(R.layout.main); Button btn = new Button(this); btn.setText("TO SECOND"); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent intent = new Intent(StartAct.this, SecontAct.class); StartAct.this.startActivity(intent); } }); this.setContentView(btn); try { Context other = this.createPackageContext("com.app.share2", CONTEXT_IGNORE_SECURITY|CONTEXT_INCLUDE_CODE); Class<?> c = other.getClassLoader().loadClass("com.app.share2.R"); Class<?>[] cl = c.getClasses(); int b =0; for (int i = 0; i < cl.length; i++) { Log.d("TAG", cl[i].getSimpleName()); Field field[] = cl[i].getFields(); for (int j = 0; j < field.length; j++) { Log.d("TAG", "NAME:"+field[j].getName()+"--VALUE:"+field[j].getInt(field[j].getName())); if(field[j].getName().equals("button1")) { b = field[j].getInt(field[j].getName()); Log.d("TAG", "--------id"); } }; } View v = LayoutInflater.from(other).inflate(R.layout.main, null); Button btn1 = (Button) v.findViewById(b); btn1.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Log.d("TAG", "BUTTON FROM Share2"); Toast.makeText(StartAct.this, "BUTTON FROM Share2", Toast.LENGTH_SHORT).show(); } }); this.setContentView(v); } catch (NameNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
资源apk包Layout
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Share2" /> <Button android:text="Button" android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button> </LinearLayout>
转自:http://blog.csdn.net/csy172775922/article/details/6714703