<!-- 聲明所有需要的權(quán)限（包括普通權(quán)限和危險權(quán)限） -->
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_CONTACTS"/>

private static final int MY_PERMISSION_REQUEST_CODE = 10000;

//第 1 步: 檢查是否有相應(yīng)的權(quán)限，
boolean isAllGranted = checkPermissionAllGranted(
    new String[] {
        //根據(jù)自己需求，進(jìn)行添加相應(yīng)的權(quán)限
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE
    }
);
// 如果權(quán)限全都擁有, 則直接初始化日志文件
if (isAllGranted) {
    configureLog4J.configure();//有權(quán)限之后要做的事情
    return;
}

//第 2 步: 請求權(quán)限
// 一次請求多個權(quán)限, 如果其他有權(quán)限是已經(jīng)授予的將會自動忽略掉
ActivityCompat.requestPermissions(
    this,
    new String[] {
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE
    },
    MY_PERMISSION_REQUEST_CODE
);

//檢查是否擁有指定的所有權(quán)限
private boolean checkPermissionAllGranted(String[] permissions) {
    for (String permission : permissions) {
        if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
            // 只要有一個權(quán)限沒有被授予, 則直接返回 false
            return false;
        }
    }
    return true;
}


//第 3 步: 申請權(quán)限結(jié)果返回處理
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    if (requestCode == MY_PERMISSION_REQUEST_CODE) {
        boolean isAllGranted = true;

        // 判斷是否所有的權(quán)限都已經(jīng)授予了
        for (int grant : grantResults) {
            if (grant != PackageManager.PERMISSION_GRANTED) {
                isAllGranted = false;
                break;
            }
        }

        if (isAllGranted) {
            // 如果所有的權(quán)限都授予了, 則初始化日志文件
            configureLog4J.configure();//有權(quán)限之后要做的事情

        } else {
            // 彈出對話框告訴用戶需要權(quán)限的原因, 并引導(dǎo)用戶去應(yīng)用權(quán)限管理中手動打開權(quán)限按鈕
            openAppDetails();
        }
    }
}
//打開 APP 的詳情設(shè)置
private void openAppDetails() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("該程序需要訪問 “外部存儲器”，請到 “應(yīng)用信息 -> 權(quán)限” 中授予！");
    builder.setPositiveButton("去手動授權(quán)", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            Intent intent = new Intent();
            intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
            intent.addCategory(Intent.CATEGORY_DEFAULT);
            intent.setData(Uri.parse("package:" + getPackageName()));
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
            intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
            startActivity(intent);
        }
    });
    builder.setNegativeButton("取消", null);
    builder.show();
}