[摘]android6.0运行时动态申请权限

Android2020年3月17日 pm10:49发布4年前 (2020)更新 3xcn.com@站长

1. 运行时获得权限:

从androi 6.0开始,不再是安装应用时用户确定获得全部的权限.而是在使用软件过程中需要该权限时,弹出对话框让用户选择权限.不仅如此,用户选择权限后还可以关闭。

2. 检查是否获得权限:

通过 ContextCompat.checkSelfPermission(context,permission)方法,方法返回值为 PackageManager.PERMISSION_GRANTED or PackageManager.PERMISSION_DENIED

int permissionCheck = ContextCompat.checkSelfPermission(this,
                Manifest.permission.WRITE_CALENDAR);
        if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
            Toast.makeText(PermissionActivity.this, "hava this permission", Toast.LENGTH_SHORT).show();
        }else {
            Toast.makeText(PermissionActivity.this, "no this permission", Toast.LENGTH_SHORT).show();
        }

3. 请求权限:

通过ActivityCompat.requestPermissions(activity,permissions,requestCode)第二个参数是一个String数组,第三个参数是请求码便于在onRequestPermissionsResult 方法中根据requestCode进行判断.

 ActivityCompat.requestPermissions(PermissionActivity.this,
                        new String[]{Manifest.permission.READ_CONTACTS},
                        MY_PERMISSIONS_REQUEST_READ_CONTACTS);

4. 请求权限后的回调:

请求权限后会回调onRequestPermissionsResult方法,在activity中重写onRequestPermissionsResult(requestCode,permissions,grantResults)方法 grantResults是int类型的数组每个值为PackageManager.PERMISSION_GRANTED or PackageManager.PERMISSION_DENIED 分别对应permissions的每个请求。

     @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {

        switch (requestCode) {
            case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    

                } else {

                }

            }
        }
       
    }

5、动态请求权限

  //6.0之后要动态获取权限，重要！！！
    protected void judgePermission() {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            // 检查该权限是否已经获取
            // 权限是否已经 授权 GRANTED---授权  DINIED---拒绝

            // sd卡权限
            String[] SdCardPermission = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
            if (ContextCompat.checkSelfPermission(this, SdCardPermission[0]) != PackageManager.PERMISSION_GRANTED) {
                // 如果没有授予该权限，就去提示用户请求
                ActivityCompat.requestPermissions(this, SdCardPermission, 100);
            }

            //手机状态权限
            String[] readPhoneStatePermission = {Manifest.permission.READ_PHONE_STATE};
            if (ContextCompat.checkSelfPermission(this, readPhoneStatePermission[0]) != PackageManager.PERMISSION_GRANTED) {
                // 如果没有授予该权限，就去提示用户请求
                ActivityCompat.requestPermissions(this, readPhoneStatePermission, 200);
            }

            //定位权限
            String[] locationPermission = {Manifest.permission.ACCESS_FINE_LOCATION};
            if (ContextCompat.checkSelfPermission(this, locationPermission[0]) != PackageManager.PERMISSION_GRANTED) {
                // 如果没有授予该权限，就去提示用户请求
                ActivityCompat.requestPermissions(this, locationPermission, 300);
            }

            String[] ACCESS_COARSE_LOCATION = {Manifest.permission.ACCESS_COARSE_LOCATION};
            if (ContextCompat.checkSelfPermission(this, ACCESS_COARSE_LOCATION[0]) != PackageManager.PERMISSION_GRANTED) {
                // 如果没有授予该权限，就去提示用户请求
                ActivityCompat.requestPermissions(this, ACCESS_COARSE_LOCATION, 400);
            }


            String[] READ_EXTERNAL_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE};
            if (ContextCompat.checkSelfPermission(this, READ_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) {
                // 如果没有授予该权限，就去提示用户请求
                ActivityCompat.requestPermissions(this, READ_EXTERNAL_STORAGE, 500);
            }

            String[] WRITE_EXTERNAL_STORAGE = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
            if (ContextCompat.checkSelfPermission(this, WRITE_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) {
                // 如果没有授予该权限，就去提示用户请求
                ActivityCompat.requestPermissions(this, WRITE_EXTERNAL_STORAGE, 600);
            }

        }else{
            //doSdCardResult();
        }
        //LocationClient.reStart();
    }

本文摘抄如下

1、android6.0运行时权限详解 [直通车]

2、Android动态获取权限（读写、获取手机状态、定位）[直通车]