【原创】android 中安装应用程序方法及代码

 

 

//①通过market获取程序，这样必须保证market上的pname为最新的

Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse("market://search?q=pname:com.sdddz"));

startActivity(intent);

 

 

//②通过intent机制安装

Uri uri = Uri.fromFile(new File(fileName)); 

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(uri,"application/vnd.android.package-archive");

startActivity(intent);

 

 

//③直接调用安装接口，安装权限：android.permission.INSTALL_PACKAGES

Uri mPackeageURI = Uri.fromFile(new File(Environment.getExternalStorageDirectory()+apkName));

int installFlag = 0;

PackageManager pm = getPackageManager();

try{

PackageInfo pi = pm.getPackageInfo(packageName,PackageManager.GET_UNINSTALLED_PACKAGES);

if(pi != null){

installFlag |= PackageManager.REPLACE_EXISTING_PACKAGE;

}

}catch(NameNotFoundException e){

e.printStrackTrace();

}

PackageInstallObserver observer = new PackageInstallObserver();

pm.installPackage(mPackageURI,observer,installFlag);

 

 

//④执行install命令 不附上-r会清楚原有数据(这个方法还没有搞清楚请，是需要在这个页面里执行命令吗)

install -r 

am start ..

Runtime.exec(String[] args)

Class<?> execClass = Class.forName("android.os.Exec");

 

 

 

 

方法的①②③可用于下载APK更新自动安装使用，④还没试过。