Android自定義加載框效果

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="12dp" />
    <solid android:color="@color/transparent_black"/>
</shape>

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>

    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/bg_message_dialog"
        android:minWidth="132dp"
        android:minHeight="100dp"
        android:padding="15dp">

        <ImageView
            android:id="@+id/iv"
            android:layout_width="35dp"
            android:layout_height="35dp"
            android:src="@mipmap/ic_loading"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toTopOf="@id/tv"/>

        <TextView
            android:id="@+id/tv"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:textSize="12sp"
            android:textColor="@color/white"
            android:layout_marginTop="15dp"
            android:text="@string/loading"
            android:lineSpacingExtra="8dp"
            android:gravity="center_horizontal"
            app:layout_constraintTop_toBottomOf="@id/iv"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            />
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>

package com.lzk.libcommon.widget

import android.animation.ObjectAnimator
import android.animation.ValueAnimator
import android.graphics.Color
import android.graphics.drawable.ColorDrawable
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.view.Window
import android.view.animation.LinearInterpolator
import androidx.databinding.DataBindingUtil
import androidx.fragment.app.DialogFragment
import androidx.fragment.app.FragmentManager
import com.blankj.utilcode.util.LogUtils
import com.lzk.libcommon.R
import com.lzk.libcommon.databinding.ViewLoadingDialogBinding

/**
 * @Author: LiaoZhongKai
 * @Date: 2021/7/14 9:04
 * @Description: 加載框
 */
class LoadingDialog: DialogFragment() {

    private var mTips: String? = null
    private lateinit var mLoadingDialogBinding: ViewLoadingDialogBinding
    private lateinit var mAnimation: ObjectAnimator

    override fun onStart() {
        super.onStart()
        //去掉DialogFragment外部的背景色
        dialog?.window?.apply {
            attributes = attributes.apply {
            //======================這裡設置背景陰影透明度===============
            //======================0是全透明===========================
                dimAmount = 0.0f
            }
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        mLoadingDialogBinding = DataBindingUtil.inflate(inflater, R.layout.view_loading_dialog,container,false)

        dialog?.apply {
            requestWindowFeature(Window.FEATURE_NO_TITLE)
            setCanceledOnTouchOutside(false)
            window?.apply {
                //去掉DialogFragment內部的背景色
                setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
                //去掉Padding
                decorView.setPadding(0,0,0,0)
            }
        }
        return mLoadingDialogBinding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        rotate()
        setTips(mTips)
    }

    private fun rotate(){
        mAnimation = ObjectAnimator.ofFloat(mLoadingDialogBinding.iv,"rotation",360f).apply {
            repeatCount = ObjectAnimator.INFINITE
            repeatMode = ValueAnimator.RESTART
            interpolator = LinearInterpolator()
            duration = 1000
        }
        mAnimation.start()
    }

    override fun onDestroyView() {
        super.onDestroyView()
        mAnimation.cancel()
    }

    //顯示
    fun showDialog(fragmentManager: FragmentManager, msg: String? = null){
        mTips = msg
        if (isVisible){
            dismiss()
        }
        show(fragmentManager,"")
    }
    //隱藏
    fun dismissDialog(){
        if (isAdded){
            dismiss()
            mTips = null
        }
    }

    /**
     * 設置加載提示文字
     */
    private fun setTips(msg: String?): LoadingDialog{
        mLoadingDialogBinding.tv.visibility = if (msg.isNullOrEmpty()) View.GONE else View.VISIBLE
        if (!msg.isNullOrEmpty()){
            mLoadingDialogBinding.tv.text = msg
        }
        return this
    }
}

abstract class BaseVMActivity<T: ViewDataBinding,VM: BaseViewModel> : AppCompatActivity(){
 private var mLoadingDialog: LoadingDialog? = null

   override fun onDestroy() {
        super.onDestroy()
        mLoadingDialog?.dismissDialog()
        mLoadingDialog = null
    }


 /**
     * 顯示加載彈框
     */
    fun showLoadingDialog(msg: String? = null){
        mLoadingDialog = LoadingDialog()
        mLoadingDialog!!.showDialog(supportFragmentManager,msg)
    }

    /**
     * 隱藏加載彈框
     */
    fun dismissLoadingDialog(){
        mLoadingDialog?.dismissDialog()
    }
}