android 啟動第三方程式的代碼

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 方法一：Intent intent = new Intent();  

• intent.setClassName(<package name>, <class name>);  
• 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);  

//啟動媒體庫

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);

//啟動相機

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);

//啟動htmlviewer,並開啟指定的一個檔案 注意TXT不能是ANSI的，否則會亂碼

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);

android 啟動第三方程式的代碼