Android 中检查是否被授予相应的权限

1.声明所需要的权限：

private final static int PERMISSIONS_OK = 10001;    
private static String[] PERMISSIONS_STORAGE = {
            "android.permission.READ_EXTERNAL_STORAGE",
            "android.permission.WRITE_EXTERNAL_STORAGE"};

2.Activity 对应的生命周期中调用：

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (!checkPermissionAllGranted(PERMISSIONS_STORAGE)) {
            ActivityCompat.requestPermissions(MainActivity.this,
                    PERMISSIONS_STORAGE, PERMISSIONS_OK);
        }
    }

 

    private boolean checkPermissionAllGranted(String[] permissions) {
        for (String permission : permissions) {
            if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
        return true;
    }

 

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        switch (requestCode) {
            case PERMISSIONS_OK:
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                } else {
                }
                break;
            default:
                break;
        }
    }