android 启动第三方程序的代码

方法一

Intent intent = new Intent();  intent.setClassName(<package name>, <class name>);  startActivity(intent);

Intent i=new Intent;ComponentName com= new ComponentName(<Package Name> , <Calss Name>);  i.setComponent(com);  startActivity(i);

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);

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