android 程序间跳转

demo：

package com.android.tutor;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class StartAnotherApplicationDemo extends Activity {
private Button mButton01, mButton02;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

mButton01 = (Button) findViewById(R.id.button);
mButton02 = (Button) findViewById(R.id.start_calender);

// -----启动我们自身写的程序------------------
mButton01.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
// -----核心部分----- 前名一个参数是应用程序的包名,后一个是这个应用程序的主Activity名
Intent intent = new Intent();
intent.setComponent(new ComponentName(
"com.droidnova.android.games.vortex",
"com.droidnova.android.games.vortex..Vortex"));
startActivity(intent);
}
});
// -----启动系统自带的应用程序------------------
mButton02.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.android.calendar",
"com.android.calendar.LaunchActivity"));
startActivity(intent);
}
});
}
}