详解Android 检测权限的三种写法

  public static boolean checkPermission1(Context context, String[] permissions) {    PackageManager packageManager = context.getPackageManager();    String packageName = context.getPackageName();    for (String permission : permissions) {      int per = packageManager.checkPermission(permission, packageName);      if (PackageManager.PERMISSION_DENIED == per) {        Log.w(TAG, "required permission not granted . permission = " + permission);        return false;      }    }    return true;  }  public static boolean checkPermission2(Context context, String[] permissions) {    for (String permission : permissions) {      int per =context.checkPermission(permission, Process.myPid(),Process.myUid());      if (PackageManager.PERMISSION_GRANTED != per) {        Log.w(TAG, "required permission not granted . permission = " + permission);        return false;      }    }    return true;  }  public static boolean checkPermission3(Context context, String[] permissions) {    for (String permission : permissions) {      int per = ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA);      if (PackageManager.PERMISSION_GRANTED != per) {        Log.w(TAG, "required permission not granted . permission = " + permission);        return false;      }    }    return true;  }