系统权限工具类

public class PermissionUtils {

    /**
     * 第一次检查权限，用在打开应用的时候请求应用需要的所有权限
     *
     * @param context
     * @param requestCode 请求码
     * @param permission  权限数组
     * @return
     */
    public static boolean checkPermissionFirst(Context context, int requestCode, String[] permission) {
        List permissions = new ArrayList();
        for (String per : permission) {
            int permissionCode = ActivityCompat.checkSelfPermission(context, per);
            if (permissionCode != PackageManager.PERMISSION_GRANTED) {
                permissions.add(per);
            }
        }
        if (!permissions.isEmpty()) {
            ActivityCompat.requestPermissions((Activity) context, permissions.toArray(new String[permissions.size()]), requestCode);
            return false;
        } else {
            return true;
        }
    }

    /**
     * 第二次检查权限，用在某个操作需要某个权限的时候调用
     *
     * @param context
     * @param requestCode 请求码
     * @param permission  权限数组
     * @return
     */
    public static boolean checkPermissionSecond(Context context, int requestCode, String[] permission) {

        List permissions = new ArrayList();
        for (String per : permission) {
            int permissionCode = ActivityCompat.checkSelfPermission(context, per);
            if (permissionCode != PackageManager.PERMISSION_GRANTED) {
                permissions.add(per);
            }
        }
        if (!permissions.isEmpty()) {
            ActivityCompat.requestPermissions((Activity) context, permissions.toArray(new String[permissions.size()]), requestCode);

            /*跳转到应用详情，让用户去打开权限*/
            Intent localIntent = new Intent();
            localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            if (Build.VERSION.SDK_INT >= 9) {
                localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
                localIntent.setData(Uri.fromParts("package", context.getPackageName(), null));
            } else if (Build.VERSION.SDK_INT <= 8) {
                localIntent.setAction(Intent.ACTION_VIEW);
                localIntent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
                localIntent.putExtra("com.android.settings.ApplicationPkgName", context.getPackageName());
            }
            context.startActivity(localIntent);
            return false;
        } else {
            return true;
        }
    }
}

使用接受响应在activity为例

    boolean checkPermissionSecond = PermissionUtils.checkPermissionFirst(this, PERMISSION_CODE_SECOND,
                new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.CAMERA});

  private boolean isToast = true;//是否弹吐司，为了保证for循环只弹一次

    /**
     * 处理请求权限的响应
     *
     * @param requestCode  请求码
     * @param permissions  权限数组
     * @param grantResults 请求权限结果数组
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        boolean isPermissions = true;
        for (int i = 0; i < permissions.length; i++) {
            if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
                isPermissions = false;
                if (!ActivityCompat.shouldShowRequestPermissionRationale(this, permissions[i])) { //用户选择了"不再询问"
                    if (isToast) {
                        Toast.makeText(this, "请手动打开该应用需要的权限", Toast.LENGTH_SHORT).show();
                        isToast = false;
                    }
                }
            }
        }
        isToast = true;
        if (isPermissions) {
            Log.d("onRequestPermission", "onRequestPermissionsResult: " + "允许所有权限");
            init();
        } else {
            Log.d("onRequestPermission", "onRequestPermissionsResult: " + "有权限不允许");
            finish();
        }
    }