動態6.0以及以上動態申請權限

public class MainActivity extends AppCompatActivity {
    private List<String> missingPermission = new ArrayList<>(10);
    private static final String[] REQUIRED_PERMISSION_LIST = new String[]{
            Manifest.permission.WRITE_EXTERNAL_STORAGE,
            Manifest.permission.READ_EXTERNAL_STORAGE,
    };
    private final int REQUEST_PERMISSION_CODE = 12345;
    private final int REQUEST_QR_CAPTURE_CODE = 12000;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        checkAndRequestPermissions();
    }
    /**
     * 檢查權限是否缺失，並申請
     */
    private void checkAndRequestPermissions() {
        for (String eachPermission : REQUIRED_PERMISSION_LIST) {
            if (ContextCompat.checkSelfPermission(this, eachPermission) != PackageManager.PERMISSION_GRANTED) {
                missingPermission.add(eachPermission);
            }
        }
        if (missingPermission.isEmpty()) {
            onRequestPermissionsSuccess();
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            ActivityCompat.requestPermissions(this,
                    missingPermission.toArray(new String[missingPermission.size()]),
                    REQUEST_PERMISSION_CODE);
        }
    }

    /**
     * 申請權限結果回調
     */
    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_PERMISSION_CODE) {
            for (int i = grantResults.length - 1; i >= 0; i--) {
                if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {
                    missingPermission.remove(permissions[i]);
                }
            }
        }
        if (missingPermission.isEmpty()) {
            onRequestPermissionsSuccess();
        } else {
            finish();
        }
    }

    /**
     * 完成權限申請
     */
    public void onRequestPermissionsSuccess() {
        FileUtil.createFolder(Constants.PATH_APP);
    }
}