关于Android6.0权限

Android6.0开始，有些权限的获取需要用以下方式来询问用户：

int permissionCheck2 = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE);
if (permissionCheck2 != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
            124);
}

<permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>