转自:http://blog.csdn.net/vrix/article/details/6851557

 在Intent中可以直接使用Intent.setClass()

也可以使用组件Component

简单的例子:

1.package com.huawei;   
2.  
3.  
4.import android.app.Activity;   
5.import android.content.ComponentName;   
6.import android.content.Intent;   
7.import android.os.Bundle;   
8.import android.view.View;   
9.import android.view.View.OnClickListener;   
10.import android.widget.Button;   
11.  
12.public class Test extends Activity {   
13.    /** Called when the activity is first created. */  
14.    @Override  
15.    public void onCreate(Bundle savedInstanceState) {   
16.        super.onCreate(savedInstanceState);   
17.        setContentView(R.layout.main);   
18.        Button btn = (Button) findViewById(R.id.btn);   
19.        btn.setOnClickListener(new OnClickListener() {   
20.               
21.            @Override  
22.            public void onClick(View v) {   
23.//组件名称,第一个参数是包名,也是主配置文件Manifest里设置好的包名   
24.第二个是类名,要带上包名   
25.  
26.                ComponentName com = new ComponentName("com.huawei", "com.huawei.Test1");   
27.                Intent  intent = new Intent();   
28.//设置部件   
29.                intent.setComponent(com);   
30.                Test.this.startActivity(intent);   
31.            }   
32.        });   
33.    }   
34.}  

android 启动第三方程序的代码

 

 

方法一:
  1. Intent intent = new Intent();  
  2. intent.setClassName(<package name>, <class name>);  
  3. startActivity(intent);
 
方法二:
  1. Intent i=new Intent;
  2. ComponentName com= new ComponentName(<Package Name> , <Calss Name>);  
  3. i.setComponent(com);  
  4. startActivity(i);  

//启动媒体库

Intent i = new Intent();

ComponentName comp = new ComponentName("com.android.camera","com.android.camera.GalleryPicker");

i.setComponent(comp);

i.setAction("android.intent.action.VIEW");

startActivity(i);

 

//启动相机

Intent mIntent = new Intent();

ComponentName comp = new ComponentName("com.android.camera","com.android.camera.Camera");

mIntent.setComponent(comp);

mIntent.setAction("android.intent.action.VIEW");

startActivity(mIntent);

 

//启动htmlviewer,并打开指定的一个文件 注意TXT不能是ANSI的,否则会乱码

Intent intent = new Intent();

ComponentName cn = new ComponentName("com.android.htmlviewer", "com.android.htmlviewer.HTMLViewerActivity");

intent.setComponent(cn);

Uri uri = Uri.fromFile(new File("/sdcard/demo.txt"));

intent.setDataAndType(uri, "text/plain");

startActivity(intent);

 

posted on 2012-08-10 17:09  清沁  阅读(20357)  评论(0编辑  收藏  举报