Android仿微信多人音视频通话界面

工作中需要实现一个类似微信多人视频通话功能的界面，分别使用自定义viewgroup和自定义layoutManager的方式进行了实现。最终工作中采用了layoutManager，因为可以使用payload更新单个布局控件，效率更好。下面放出两种具体的实现效果代码。

1、使用自定义ViewGroup方式实现

下面是三个人通话时候的效果，其他的可以参考微信多人音视频通话界面。

package com.dnaer.android.telephone.widgets;

import android.content.Context;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;

import com.anbetter.log.MLog;

public class MultiVideoChatLayout extends ViewGroup implements CommLayoutAdapter.OnDataChangedListener {

 private CommLayoutAdapter mCommLayoutAdapter;

 private int mScreenWidth;

 //人数为2,3,4状态下的宽高度
 private int mSizeModel1;

 //人数为5,6,7,8，9状态下的宽高度
 private int mSizeModel2;

 public MultiVideoChatLayout(Context context) {
 this(context, null);
 }

 public MultiVideoChatLayout(Context context, AttributeSet attrs) {
 this(context, attrs, 0);
 }

 public MultiVideoChatLayout(Context context, AttributeSet attrs, int defStyleAttr) {
 super(context, attrs, defStyleAttr);
 initialize(context);
 }

 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
 public MultiVideoChatLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
 super(context, attrs, defStyleAttr, defStyleRes);
 initialize(context);
 }

 private void initialize(Context context) {
 WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
 DisplayMetrics metrics = new DisplayMetrics();
 wm.getDefaultDisplay().getMetrics(metrics);
 mScreenWidth = metrics.widthPixels;

 mSizeModel1 = mScreenWidth / 2;
 mSizeModel2 = mScreenWidth / 3;
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 //宽度默认给屏幕的宽度，高度直接取宽度，形成一个正方形
 final int width = MeasureSpec.makeMeasureSpec(mScreenWidth, MeasureSpec.EXACTLY);
 final int height = MeasureSpec.makeMeasureSpec(mScreenWidth, MeasureSpec.EXACTLY);
 setMeasuredDimension(width, height);

 MLog.d("width: " + width + ", height:" + height);

 final int childWidth = MeasureSpec.makeMeasureSpec(mScreenWidth / 3, MeasureSpec.EXACTLY);
 final int childHeight = MeasureSpec.makeMeasureSpec(mScreenWidth / 3, MeasureSpec.EXACTLY);

 final int childWidth2 = MeasureSpec.makeMeasureSpec(mScreenWidth / 2, MeasureSpec.EXACTLY);
 final int childHeight2 = MeasureSpec.makeMeasureSpec(mScreenWidth / 2, MeasureSpec.EXACTLY);

 if (getChildCount() > 4) {
  for (int i = 0; i < getChildCount(); i++) {
  View child = getChildAt(i);
  child.measure(childWidth, childHeight);
  }
 } else {
  for (int i = 0; i < getChildCount(); i++) {
  View child = getChildAt(i);
  child.measure(childWidth2, childHeight2);
  }
 }
 }

 @Override
 protected void onLayout(boolean changed, int l, int t, int r, int b) {
 if (getChildCount() <= 4) {
  layoutModel1();
 } else {
  layoutModel2();
 }
 }

 private void layoutModel2() {
 int currentWidth = 0;
 for (int i = 0; i < getChildCount(); i++) {
  View item = getChildAt(i);
  if (i % 3 == 0) {
  currentWidth = 0;
  item.layout(0, i / 3 * mSizeModel2, mSizeModel2, i / 3 * mSizeModel2 + mSizeModel2);
  } else {
  item.layout(currentWidth + mSizeModel2, i / 3 * mSizeModel2, currentWidth + 2 * mSizeModel2, i / 3 * mSizeModel2 + mSizeModel2);
  currentWidth = currentWidth + mSizeModel2;
  }
 }
 }

 private void layoutModel1() {
 if (getChildCount() == 3) {
  for (int i = 0; i < getChildCount(); i++) {
  View item = getChildAt(i);
  MLog.d("width: " + item.getMeasuredWidth() + ", height: " + item.getMeasuredHeight() + ", mSizeModel1: " + mSizeModel1);
  if (i == 0) {
   item.layout(0, 0, mSizeModel1, mSizeModel1);
  } else if (i == 1) {
   item.layout(mSizeModel1, 0, mSizeModel1 * 2, mSizeModel1);
  } else if (i == 2) {
   item.layout(mSizeModel1 / 2, mSizeModel1, mSizeModel1 + mSizeModel1 / 2, mSizeModel1 * 2);
  }
  }
 } else {
  for (int i = 0; i < getChildCount(); i++) {
  View item = getChildAt(i);
  if (i % 2 == 0) {
   item.layout(0, i / 2 * mSizeModel1, mSizeModel1, i / 2 * mSizeModel1 + mSizeModel1);
  } else {
   item.layout(mSizeModel1, i / 2 * mSizeModel1, 2 * mSizeModel1, i / 2 * mSizeModel1 + mSizeModel1);
  }
  }
 }
 }

 public void setAdapter(CommLayoutAdapter adapter) {
 mCommLayoutAdapter = adapter;
 mCommLayoutAdapter.setOnDataChangedListener(this);
 changedAdapter();
 }

 @Override
 public void onChanged() {
 changedAdapter();
 }

 private void changedAdapter() {
 removeAllViews();
 CommLayoutAdapter layoutAdapter = mCommLayoutAdapter;
 for (int i = 0; i < layoutAdapter.getCount(); i++) {
  View view = layoutAdapter.getView(this, i, layoutAdapter.getItem(i));
  view.setDuplicateParentStateEnabled(true);
  addView(view);
 }
 }
}

2、使用自定义LayoutManager方式实现

package org.fireking.customgridlayoutmanager

import android.content.res.Resources
import android.support.v7.widget.RecyclerView
import java.lang.IllegalArgumentException

class MultiChatLayoutManager : RecyclerView.LayoutManager() {

 private var leftMargin = 0
 private var rightMargin = 0
 private var mScreenWidth = 0

 override fun generateDefaultLayoutParams(): RecyclerView.LayoutParams {
 return RecyclerView.LayoutParams(RecyclerView.LayoutParams.WRAP_CONTENT, RecyclerView.LayoutParams.WRAP_CONTENT)
 }

 override fun onLayoutChildren(recycler: RecyclerView.Recycler?, state: RecyclerView.State?) {
 super.onLayoutChildren(recycler, state)
 if (itemCount == 0) {
  detachAndScrapAttachedViews(recycler!!)
  return
 }
 if (childCount == 0 && state!!.isPreLayout) {
  return
 }
 val params = recycler!!.getViewForPosition(0).layoutParams as RecyclerView.LayoutParams
 leftMargin = params.leftMargin
 rightMargin = params.rightMargin
 detachAndScrapAttachedViews(recycler)
 layoutItem(recycler)
 }

 private fun layoutItem(recycler: RecyclerView.Recycler) {

 if (itemCount > 9) {
  throw IllegalArgumentException("${javaClass.simpleName}最多支持9个item布局， 请检查你的item个数是否正确")
 }

 mScreenWidth = Resources.getSystem().displayMetrics.widthPixels

 val itemSize = if (itemCount > 4) {
  mScreenWidth / 3
 } else {
  mScreenWidth / 2
 }

 if (itemCount <= 4) {
  if (itemCount == 3) {
  for (i in 0 until itemCount) {
   val view = recycler.getViewForPosition(i)
   addView(view) // 因为detach过所以重新添加
   measureChildWithMargins(view, 0, 0)
   when (i) {
   0 -> layoutDecoratedWithMargins(view, 0, 0, itemSize, itemSize)
   1 -> layoutDecoratedWithMargins(view, itemSize, 0, itemSize * 2, itemSize)
   else -> layoutDecoratedWithMargins(
    view,
    itemSize / 2,
    itemSize,
    itemSize + itemSize / 2,
    itemSize * 2
   )
   }
  }
  } else {
  for (i in 0 until itemCount) {
   val view = recycler.getViewForPosition(i)
   addView(view) // 因为detach过所以重新添加
   measureChildWithMargins(view, 0, 0)
   if (i % 2 == 0) {
   layoutDecoratedWithMargins(view, 0, i / 2 * itemSize, itemSize, i / 2 * itemSize + itemSize)
   } else {
   layoutDecoratedWithMargins(
    view,
    itemSize,
    i / 2 * itemSize,
    2 * itemSize,
    i / 2 * itemSize + itemSize
   )
   }
  }
  }
 } else {
  var currentWidth = 0
  for (i in 0 until itemCount) {
  val view = recycler.getViewForPosition(i)
  addView(view) // 因为detach过所以重新添加
  measureChildWithMargins(view, 0, 0)
  if (i % 3 == 0) {
   currentWidth = 0
   layoutDecoratedWithMargins(view, 0, i / 3 * itemSize, itemSize, i / 3 * itemSize + itemSize)
  } else {
   layoutDecoratedWithMargins(
   view,
   currentWidth + itemSize,
   i / 3 * itemSize,
   currentWidth + 2 * itemSize,
   i / 3 * itemSize + itemSize
   )
   currentWidth += itemSize
  }
  }
 }
 }

 //因为这个布局不需要有滚动，所以直接将横竖两个方向的滚动全部取消了
 override fun canScrollHorizontally(): Boolean {
 return false
 }

 override fun canScrollVertically(): Boolean {
 return false
 }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。