Android--卸载应用

 List<PackageInfo> packages = getPackageManager().getInstalledPackages(0);   
        for (PackageInfo i : packages) {    
            if ((i.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {    
                this.packages.add(i);
            }   
            
        }    

 public void uninstall(PackageInfo info){
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_DELETE);
        intent.setData(Uri.parse(String.format("package:%s", info.packageName)));
        startActivity(intent);
    }

  public void install(View v){
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        File file = new File(Environment.getExternalStorageDirectory(),"XXX.apk");
        intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
        startActivity(intent);
    }