这篇文章主要为大家展示了android surfaceView如何实现播放视频功能,内容简而易懂,希望大家可以学习一下,学习完之后肯定会有收获的,下面让小编带大家一起来看看吧。
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RelativeLayout
<?xml version="1.0" encoding="utf-8"?>
mySurfaceView
package com.example.examday11_4_1.surfaceview; import android.content.Context; import android.media.MediaPlayer; import android.util.AttributeSet; import android.view.SurfaceHolder; import android.view.SurfaceView; import java.io.IOException; import java.text.SimpleDateFormat; public class MySurfaceView extends SurfaceView implements SurfaceHolder.Callback { private SurfaceHolder surfaceHolder; private MediaPlayer mediaPlayer; public MySurfaceView(Context context) { super(context); } public MySurfaceView(Context context, AttributeSet attrs) { super(context, attrs); surfaceHolder = getHolder(); surfaceHolder.addCallback(this); if (mediaPlayer == null){ mediaPlayer = new MediaPlayer(); } } public MySurfaceView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public MySurfaceView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); } public void setDataPath(String path){ mediaPlayer.reset(); try { mediaPlayer.setDataSource(path); mediaPlayer.prepareAsync(); mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() { @Override public void onPrepared(MediaPlayer mp) { mediaPlayer.start(); } }); } catch (IOException e) { e.printStackTrace(); } } @Override public void surfaceCreated(SurfaceHolder holder) { mediaPlayer.setDisplay(surfaceHolder); } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } @Override public void surfaceDestroyed(SurfaceHolder holder) { if (mediaPlayer!=null){ mediaPlayer.release(); mediaPlayer = null; } } //暂停/开始播放 public void playOrNo(){ if (mediaPlayer!=null){ if (mediaPlayer.isPlaying()){ mediaPlayer.pause(); }else { mediaPlayer.start(); } } } //拖动更新进度 public void seekTo(int progress){ if (mediaPlayer!=null){ int duration = mediaPlayer.getDuration(); int current = progress * duration /100; mediaPlayer.seekTo(current); } } //获取播放进度 public int getProgress(){ if (mediaPlayer!=null){ int druation = mediaPlayer.getDuration(); int currentPosition = mediaPlayer.getCurrentPosition(); int progress = currentPosition * 100 / druation; return progress; } return 0; } //获取播放时长 public String getCurrentTime(){ if (mediaPlayer!=null){ long currentPostion = mediaPlayer.getCurrentPosition(); SimpleDateFormat format = new SimpleDateFormat("mm:ss"); String f = format.format(currentPostion); return f+""; } return ""; } //获取时长 public String getDuration(){ if (mediaPlayer!=null){ long duration = mediaPlayer.getDuration(); SimpleDateFormat format = new SimpleDateFormat("mm:ss"); return format.format(duration)+""; } return ""; } }
MainActivity
package com.example.examday11_4_1; import android.Manifest; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.widget.Button; import android.widget.SeekBar; import android.widget.TextView; import androidx.appcompat.app.AppCompatActivity; import com.example.examday11_4_1.surfaceview.MySurfaceView; import java.util.Timer; import java.util.TimerTask; public class MainActivity extends AppCompatActivity { private MySurfaceView mySurfaceView; private TextView teNowTiem; private SeekBar sb; private TextView teAllTiem; private Button butPlay; private Timer timer; private Handler handler = new Handler(); private String path ="http://uvideo.spriteapp.cn/video/2019/0512/56488d0a-7465-11e9-b91b-1866daeb0df1_wpd.mp4"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){ requestPermissions(new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE },100); } initView(); initTimer(); } private void initTimer() { timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { final String currentTime = mySurfaceView.getCurrentTime(); final String duration = mySurfaceView.getDuration(); final int progress = mySurfaceView.getProgress(); handler.post(new Runnable() { @Override public void run() { sb.setProgress(progress);//设置进度条 teAllTiem.setText(duration);//设置总时长 teNowTiem.setText(currentTime);//设置当前时长 } }); } },0,100); } private void initView() { mySurfaceView = (MySurfaceView) findViewById(R.id.sv); mySurfaceView.setDataPath(path); teNowTiem = (TextView) findViewById(R.id.te_nowTiem); sb = (SeekBar) findViewById(R.id.sb); teAllTiem = (TextView) findViewById(R.id.te_allTiem); butPlay = (Button) findViewById(R.id.but_play); //设置拖动 sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { if (fromUser){ mySurfaceView.seekTo(progress);//视频播放拖动 } } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onStopTrackingTouch(SeekBar seekBar) { } }); //暂停播放 butPlay.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { mySurfaceView.playOrNo(); } }); } }
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