Android 组件复用和进程关系

package com.ostrichmyself.client; import android.app.Activity; import android.content.ComponentName; import android.content.Intent; import android.os.Bundle; import android.os.Process; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.TextView; 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); } } }