Kotlin动态权限permissionsdispatcher

//动态权限
implementation('com.github.hotchemi:permissionsdispatcher:3.1.0')
kapt 'com.github.hotchemi:permissionsdispatcher-processor:3.1.0'

github：https://github.com/permissions-dispatcher/PermissionsDispatcher

1、判断权限：在onStart中调用

getContactsWithPermissionCheck()

2、权限获取成功：这里是通讯录权限：注解@NeedsPermission

@NeedsPermission(
    Manifest.permission.READ_CONTACTS,
    Manifest.permission.WRITE_CONTACTS,
    Manifest.permission.GET_ACCOUNTS
)
fun getContacts() {
    setContentView(R.layout.activity_address_book)
}

3、权限被禁止，手动打开权限：注解@OnNeverAskAgain

@OnNeverAskAgain(
    Manifest.permission.READ_CONTACTS,
    Manifest.permission.WRITE_CONTACTS,
    Manifest.permission.GET_ACCOUNTS
)
fun noPermission() {
    setContentView(R.layout.activity_address_book_no_content)//设置无内容layout布局
    showPopwindow()//手动设置权限，popwindwo弹出框
}

4、权限回调

@SuppressLint("all")
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array, grantResults: IntArray) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults)
    onRequestPermissionsResult(requestCode, grantResults)
}

/**
 * 显示手动设置权限对话框
 */
fun showPopwindow() {
    //弹出popwindow对话框
    var viewLayout = LayoutInflater.from(mContext).inflate(R.layout.popwindow_setting, null)
    val popwindowUtils = PopwindowUtils(this)
    popwindowUtils.showPop(viewLayout, viewLayout)
    //弹出框的确定跟取消点击事件
    MyClickUtils.OnClickView(object : MyClickUtils.Companion.MyOnClickLenerlist {
        override fun onClick(view: View) {
            when (view) {
                viewLayout.tv_setting_confirm -> {//确定按钮
                   //跳转到当前应用的权限设置界面
                    startSystemIntent(mContext,Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
                }
            }
            popwindowUtils.dismiss()//取消
        }

    }, viewLayout.tv_setting_confirm, viewLayout.tv_setting_cancle)
}

//跳转到当前应用的权限设置界面
fun startSystemIntent(mContext: Context,action:String){
    var uri = Uri.fromParts("package", mContext.getPackageName(), null);
    var intent = Intent()
    intent.setAction(action);
    intent.setData(uri);
    mContext.startActivity(intent)
}

弹出框代码：

import android.app.Activity
import android.view.Gravity
import android.view.View
import android.view.ViewGroup
import android.view.WindowManager
import android.widget.PopupWindow
import com.cr.ucircle.R

/**
 *  界面的下方弹出
 * @property mContext Activity?
 * @constructor
 */
class PopwindowUtils(mContext: Activity) {
    var mContext: Activity? = null
    var popupWindow:PopupWindow?=null

    init {
        this.mContext = mContext
    }

    /**
     * view:位置
     * v：popwindow的布局
     */
    fun showPop(view: View,v:View) {
        popupWindow = PopupWindow(v, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
        popupWindow!!.setTouchable(true);
        popupWindow!!.setFocusable(true);
        popupWindow!!.setAnimationStyle(R.style.popwin_anim_style);
        popupWindow!!.setOutsideTouchable(true);
//        popupWindow.showAsDropDown(view, 0, 0, Gravity.BOTTOM);
        popupWindow!!.showAtLocation(view, Gravity.BOTTOM, 0, 0)
        //设置遮罩层
        backgroundAlpha(0.5f)
        popupWindow!!.setOnDismissListener(object : PopupWindow.OnDismissListener {
            override fun onDismiss() {
                backgroundAlpha(1f)
            }
        })
    }
    fun dismiss(){
        popupWindow?.dismiss()
    }

    private fun backgroundAlpha(f: Float) {
        val attributes = mContext?.window?.attributes
        attributes?.alpha = f
        mContext?.window?.addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND)
        mContext?.window?.attributes = attributes
    }

}