android:软件的安装和卸载源代码

安装：从sdcard

String fileName = Environment.getExternalStorageDirectory() + "/myApp.apk";         
Intent intent = new Intent(Intent.ACTION_VIEW);      
intent.setDataAndType(Uri.parse("file://" + filePath),"application/vnd.android.package-archive");      
或者      
//intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive");       
startActivity(intent);  

安装或升级 从网络

 Intent intent = new Intent();
	    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
	    intent.setAction(android.content.Intent.ACTION_VIEW);
	    
	    /* 调用getMIMEType()来取得MimeType */
	    String type = getMIMEType(f);
	    /* 设置intent的file与MimeType */
	    intent.setDataAndType(Uri.fromFile(f),type);
	    startActivity(intent); 

需要的权限

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.INSTALL_PACKAGES"></uses-permission>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission

卸载

Uri packageURI = Uri.parse("package:com.android.myapp");         
Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);         
startActivity(uninstallIntent);