Android简单实现动态权限获取相机权限及存储空间等多权限

<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"
        tools:ignore="ProtectedPermissions"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA"/>

private void askPermission(){
        boolean sSRPR=ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)|
                ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE)|
                ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CAMERA);
        Log.e("msg",Boolean.toString(sSRPR));
        if(sSRPR){
        	//5.20更新，直接写下面这一行
        	//begin
            ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.READ_EXTERNAL_STORAGE,
                    Manifest.permission.CAMERA
            },0);
            //end
        }
    }