Android 组件复用和进程关系

核心提示：一:跨进程调用Activity案例设计, 设计两个Application, 第一个Application1将调用第二个Application中的Activity2, 同时第二个Application2会调用自身的Activity2. 以此判断进程ID来观察进程的存在情况, 详细说明和代码如下:Application1:

一:跨进程调用Activity

案例设计, 设计两个Application, 第一个Application1将调用第二个Application中的Activity2, 同时第二个Application2会调用自身的Activity2. 以此判断进程ID来观察进程的存在情况, 详细说明和代码如下:

Application1: ClientApk 这个程序有一个ClientMainActivity会发起对应用二的一个Activity(名称为ServerActivity)的调用, ClientMainActivity启动时, 将进程的id打印出来

view plaincopy to clipboardprint?

public class ClientMainActivity extends Activity {

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

TextView tv = (TextView)findViewById(R.id.ClientTV);

ClickAction l = new ClickAction();

tv.setOnClickListener(l);

int myProcessID = Process.myPid();

//打印当前进程的ID

Log.i("---ClientMainActivity----", myProcessID + "");

}

class ClickAction implements OnClickListener{

public void onClick(View v) {

Intent intent = new Intent("com.ostrichmyself.tiantian");

//ComponetName不描述清楚的话, 就无法正确的找到ServerActivity, 但系统提供的Activity,如main都可以为什么?

final ComponentName cn = new ComponentName("com.ostrichmyself","com.ostrichmyself.ServerActivity");

intent.setComponent(cn);

startActivity(intent);

}

}

}

public class ClientMainActivity extends Activity {

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

TextView tv = (TextView)findViewById(R.id.ClientTV);

ClickAction l = new ClickAction();

tv.setOnClickListener(l);