安卓音、视频播放功能简单实现 --Android基础

1、音乐播放功能

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）

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();        }    }}

原文地址：https://www.cnblogs.com/qikeyishu/p/9192920.html