安裝某個app

/**
 * @param context 上下文
 * @param apkFile 需要安裝的app的file對象
 */
 public static void installApp(Context context, File apkFile){  
    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");
    context.startActivity(intent);
 }

卸載某個app

/**
 * @param appPackageName 需要卸載的app的包名
 */
public void uninstall(String appPackageName){  
    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_DELETE);
    intent.setData(Uri.parse("package:" + appPackageName));
    startActivityForResult(intent, 0);
}

啟動某個app

/**
 * @param appPackageName 需要啟動的app的包名
 */
 private void launch(String appPackageName) {
    PackageManager pm = getPackageManager();
        //啟動頁面的intent
        Intent intent = pm.getLaunchIntentForPackage(appPackageName);
        if (intent != null) {
            startActivity(intent);
        }else{
            Toast.makeText(this, "找不到啟動頁面", Toast.LENGTH_SHORT).show();
        }
 }