Android如何实现自定义加载框效果

小编给大家分享一下Android如何实现自定义加载框效果，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

效果图

菊花图标(mipmap-xxhdpi)

加载框圆角背景drawable

<?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>

布局文件

<?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>

LoadingDialog.kt

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: 加载框
 */
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 {
            //======================这里设置背景阴影透明度===============
            //======================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内部的背景色
                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()
    }

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

    /**
     * 设置加载提示文字
     */
    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
    }
}

基类封装

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

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


 /**
     * 显示加载弹框
     */
    fun showLoadingDialog(msg: String? = null){
        mLoadingDialog = LoadingDialog()
        mLoadingDialog!!.showDialog(supportFragmentManager,msg)
    }

    /**
     * 隐藏加载弹框
     */
    fun dismissLoadingDialog(){
        mLoadingDialog?.dismissDialog()
    }
}

以上是“Android如何实现自定义加载框效果”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注亿速云行业资讯频道！