安卓音视频播放功能简单实现 --Android基础 _Android基础

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1、音乐播放功能

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关键代码：
MainActivity.java：

package thonlon.example.cn.musicdemowithoutservice;

import android.content.pm.PackageManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import java.io.IOException;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private Button btn_play, btn_pause, btn_stop;
private MediaPlayer mediaPlayer = new MediaPlayer(); //实例化MediaPlayer类

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iniview();
initMediaPlayer();
}

private void iniview() {
btn_play = (Button) findViewById(R.id.btn_play);
btn_pause = (Button) findViewById(R.id.btn_pause);
btn_stop = (Button) findViewById(R.id.btn_stop);
btn_play.setOnClickListener(this);
btn_pause.setOnClickListener(this);
btn_stop.setOnClickListener(this);
}

private void initMediaPlayer() {
Uri uri = Uri.parse("http://www.nxl123.cn/snh.mp3"); //网络中的音乐文件
try {
mediaPlayer.setDataSource(this, uri); //音乐文件路径
mediaPlayer.prepare(); //资源文件准备
} catch (IOException e) {
e.printStackTrace();
}
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case 1:
if (grantResults.length > 0 & & grantResults[0] == PackageManager.PERMISSION_GRANTED) {
initMediaPlayer();
} else {
Toast.makeText(this, "拒绝权限无法继续使用程序", Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
break;
}
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_play:
if (!mediaPlayer.isPlaying()) {
mediaPlayer.start(); //播放
}
break;
case R.id.btn_pause:
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause(); //暂停
}
break;
case R.id.btn_stop:
if (mediaPlayer.isPlaying()) {
mediaPlayer.reset(); //停止
}
break;
default:
break;
}
}

@Override
protected void onDestroy() {
super.onDestroy();
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
}
}
}

2、视频播放功能（VideoView实现）
【安卓音视频播放功能简单实现 --Android基础】

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MainActivity.java：

package thonlon.example.cn.videoplaydemowithoutservice;

import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.MediaController;
import android.widget.Toast;
import android.widget.VideoView;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private Button btn_play, btn_pause, btn_replay;
private VideoView videoView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}

private void initView() {
btn_play = (Button) findViewById(R.id.btn_play);
btn_pause = (Button) findViewById(R.id.btn_pause);
btn_replay = (Button) findViewById(R.id.btn_replay);
videoView = (VideoView) findViewById(R.id.vv_show);
btn_play.setOnClickListener(this);
btn_pause.setOnClickListener(this);
btn_replay.setOnClickListener(this);
initVideoPath();
}

private void initVideoPath() {
//播放本地资源文件
videoView.setVideoURI(Uri.parse("android.resource://thonlon.example.cn.videoplaydemowithoutservice/"+R.raw.demo)); //设置资源路径
//videoView.setMediaController(new MediaController(this)); //播放时点击videoView显示控制条
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_play:
if (!videoView.isPlaying()) {
videoView.start(); //开始播放
}
break;
case R.id.btn_pause:
if (videoView.isPlaying()) {
videoView.pause(); //暂停播放
}
break;
case R.id.btn_replay:
if (videoView.isPlaying()) {
videoView.resume(); //重新播放
}
break;
default:
break;
}
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case 1:
if (grantResults.length > 0 & & grantResults[0] == PackageManager.PERMISSION_GRANTED) {
initVideoPath();
} else {
Toast.makeText(this, "无法播放", Toast.LENGTH_SHORT).show();
finish();
}
}
}

@Override
protected void onDestroy() {
super.onDestroy();
if (videoView != null){
videoView.suspend();
}
}
}