本文实例为大家分享了Android实现微信朋友圈图片和视频播放的具体代码，供大家参考，具体内容如下

1.效果图：

2.源码地址：链接

3.参数控制，是否显示播放按钮

holder.layout.setIsShowAll(mList.get(position).isShowAll);

holder.layout.setIsVideo(true); //true :video, false :img

holder.layout.setUrlList(mList.get(position).urlList);

4.自定义控件：

package com.example.mepositry.view;

import android.content.Context;

import android.content.res.TypedArray;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.PorterDuff;

import android.graphics.Rect;

import android.graphics.RectF;

import android.graphics.drawable.Drawable;

import android.support.v7.widget.AppCompatImageView;

import android.util.AttributeSet;

import android.view.MotionEvent;

import android.view.ViewGroup;

import com.example.mepositry.R;

//根据宽高比例自动计算高度ImageView

public class RatioImageView extends AppCompatImageView {

private int playBtnRes = R.mipmap.play_btn_video;

private Bitmap playBtnBitmap;

private boolean type; //true表示video

private int i; //i图片id

private String url; //url图片地址

private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);

Rect src = new Rect();

RectF dest = new RectF();

//* 宽高比例

private float mRatio = 0f;

public RatioImageView(Context context, AttributeSet attrs, int defStyleAttr) {

super(context, attrs, defStyleAttr);

}

public RatioImageView(Context context, AttributeSet attrs) {

super(context, attrs);

/* TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RatioImageView);

playBtnRes = typedArray.getResourceId(R.styleable.ImageViewPlay_ivp_play_btn_res, playBtnRes);

playBtnBitmap = BitmapFactory.decodeResource(getResources(), playBtnRes);

mRatio = typedArray.getFloat(R.styleable.RatioImageView_ratio, 0f);

typedArray.recycle();*/

}

public RatioImageView(Context context) {

super(context);

TypedArray typedArray = context.obtainStyledAttributes(R.styleable.RatioImageView);

playBtnRes = typedArray.getResourceId(R.styleable.ImageViewPlay_ivp_play_btn_res, playBtnRes);

playBtnBitmap = BitmapFactory.decodeResource(getResources(), playBtnRes);

mRatio = typedArray.getFloat(R.styleable.RatioImageView_ratio, 0f);

typedArray.recycle();

}

//*description: 设置图片类型，如果是TYPE_IMAGE，显示图片，如果是TYPE_VIDEO，显示图片，并且在图片正中心绘制一个播放按钮

public void setType(boolean type, int i, String url){

this.type = type;

this.i = i;

this.url = url;

}

//设置ImageView的宽高比

public void setRatio(float ratio) {

mRatio = ratio;

}

@Override

protected void onDraw(Canvas canvas) {

super.onDraw(canvas);

if(type){

//如果是true，显示图片，并且在图片正中心绘制一个播放按钮

Drawable drawable = getDrawable();

if (drawable != null) {

int viewW = drawable.getIntrinsicWidth(); //获取图片的宽

int viewH = drawable.getIntrinsicHeight(); //获取图片的高

int btnW = playBtnBitmap.getWidth(); //获取播放按钮的宽

int btnH = playBtnBitmap.getHeight(); //获取播放按钮的高

float[] result = measureViewSize(viewW, viewH);

if(result[0] > 0 && result[1] > 0){ //先根据比例缩放图标，确保绘制的时候再次回归缩放，保持播放的图片大小不变

btnW *= (viewW / result[0]);

btnH *= (viewH / result[1]);

}

float left = (viewW - btnW) / 2.0f;

float top = (viewH - btnH) / 2.0f;

src.set(0, 0, btnW, btnH);

dest.set(left, top, left+btnW, top+btnH);

canvas.save();

canvas.concat(getImageMatrix());

canvas.drawBitmap(playBtnBitmap, src, dest, mPaint);

canvas.restore();

}

}

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

int width = MeasureSpec.getSize(widthMeasureSpec);

Drawable drawable = getDrawable();

if (drawable != null) { //重新计算view

int viewW = drawable.getIntrinsicWidth();

int viewH = drawable.getIntrinsicHeight();

if(viewW > 0 && viewH > 0) {

float[] result = measureViewSize(viewW, viewH);

setMeasuredDimension((int)result[0], (int) result[1]);

}

}

if (mRatio != 0) {

float height = width / mRatio;

heightMeasureSpec = MeasureSpec.makeMeasureSpec((int) height, MeasureSpec.EXACTLY);

}

super.onMeasure(widthMeasureSpec, heightMeasureSpec);

}

@Override

public boolean onTouchEvent(MotionEvent event) {

switch (event.getAction()) {

case MotionEvent.ACTION_DOWN:

Drawable drawable = getDrawable();

if (drawable != null) {

drawable.mutate().setColorFilter(Color.GRAY,

PorterDuff.Mode.MULTIPLY);

}

break;

case MotionEvent.ACTION_MOVE:

break;

case MotionEvent.ACTION_CANCEL:

case MotionEvent.ACTION_UP:

Drawable drawableUp = getDrawable();

if (drawableUp != null) {

drawableUp.mutate().clearColorFilter();

}

break;

}

return super.onTouchEvent(event);

}

// *description: 根据传入的图片宽高，计算出最终的imageview的宽高，长宽等比缩放

private float[] measureViewSize(int w, int h) {

ViewGroup.LayoutParams lp = getLayoutParams();

float maxW = lp.width;

float maxH = lp.height;

float showWidth = w;

float showHeight = h;

float scale = (1.0f * maxW) / maxH;

float s = 1.0f * w / h;

if (w < maxW && h < maxH) { //不进行缩放

showWidth = w;

showHeight = h;

} else if (s > scale) { //宽取最大，高进行缩小

showWidth = maxW;

showHeight = (int) (h * (showWidth * 1.0 / w));

} else if (s <= scale) {//高取最大，宽进行缩小

showHeight = maxH;

showWidth = (int) (w * (showHeight * 1.0 / h));

}

float[] result = new float[2];

result[0] = showWidth;

result[1] = showHeight;

return result;

}

}

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脚本之家。