安卓权限工具类

安卓6.0后敏感权限需要动态申请，近期对之前的权限工具类做了整理和改进。目标，让敲代码更加可控的ctrl c.
此工具类支持activity 和fragment 当然fragment 的context 需要通过getConext 或者在onAttach 中拿activity 中的上下文

下面是工具类操作的基本流程

代码部分

一、使用（注意 fragment 中需要填入activity 的上下文）

PermissionManager.getInstance().getCameraPermission(getContext(), new PermissionManager.RequestPermission() {
                   @Override
                   public void isOk() {
                       Log.e("isOK","++++++++++++++++++++++++++++++++++++");
                   }
                   @Override
                   public void never() {
                       Log.e("never","++++++++++++++++++++++++++++++++++++");
                   }
                   @Override
                   public void refuse() {
                       Log.e("refuse","++++++++++++++++++++++++++++++++++++");
                   }
               });

在BaseActivity 中加入如下代码

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        PermissionManager.getInstance().onRequestPermissionsResult(this, requestCode, permissions, grantResults);
    }

二、管理类

public class PermissionManager {
    private String storage=Manifest.permission.WRITE_EXTERNAL_STORAGE;
    private String camera =Manifest.permission.CAMERA;

    private final int requestcode_camera=1;
    private static PermissionManager permissionManager;
    private RequestPermission requestPermission;
    public static PermissionManager getInstance(){
        if(null==permissionManager){
            permissionManager=new PermissionManager();
        }
        return permissionManager;
    }

    //照相机和文件权限
    public void getCameraPermission(Context context,RequestPermission requestPermission){
        this.requestPermission=requestPermission;
        PermissionUtil.getInstance().checkPermission(context,new String[]{storage,camera},requestcode_camera);
    }



    /**
     * 一个或多个权限请求结果回调
     *
     * @param requestCode
     * @param permissions
     * @param grantResults
     */
    public void onRequestPermissionsResult(Activity context,int requestCode, String[] permissions, int[] grantResults) {
        if(requestPermission==null){
            return;
        }
        boolean hasAllGranted = true;
        for (int i = 0; i < grantResults.length; ++i) {
            if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
                hasAllGranted = false;
                // 可以推断出用户选择了“不在提示”选项，在这种情况下需要引导用户至设置页手动授权
                if (!ActivityCompat.shouldShowRequestPermissionRationale(context, permissions[i])) {
                    requestPermission.never();
                } else {
                    //权限请求失败，但未选中“不再提示”选项
                    requestPermission.refuse();
                }
                break;
            }
        }
        if (hasAllGranted) {
            //权限请求成功
            requestPermission.isOk();
        }
    }

    public interface  RequestPermission{
        public void isOk();
        public void never ();
        public void refuse();
    }
}

三、工具类

/**
 * Created by biyunlong on 2017/7/7.
 * Make progress every day
 */

public class PermissionUtil {
    public static PermissionUtil permissionUtil;

    public static PermissionUtil getInstance() {
        if (permissionUtil == null) {
            permissionUtil = new PermissionUtil();
        }
        return permissionUtil;
    }

    public boolean checkPermission(Context context, String[] permissions, int code) {
        int length = permissions.length;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            ((Activity) context).requestPermissions(permissions, code);
        }

        for (int i = 0; i < length; i++) {
            if (ContextCompat.checkSelfPermission(context, permissions[i]) == PackageManager.PERMISSION_DENIED) {
                return false;
            }
        }
        return true;
    }

    public boolean checkPermission(Context context, String permission, int code) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            ((Activity) context).requestPermissions(new String[]{permission}, code);
        }
        if (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_DENIED) {
            return true;
        } else {
            return false;
        }
    }
}