Android开发-基于ijkplayer框架开发网络电视直播播放器的实现

梦里梦外; 2023-06-13 03:18 639阅读 0赞

[https://blog.csdn.net/fukaimei/article/details/80553709][https_blog.csdn.net_fukaimei_article_details_80553709]

前 言  
ijkplayer框架是由B站在GitHub开源的一款比较好用的开源网络播放器框架，它能支持在Android、IOS等平台上编译移植使用。而且支持多种视频格式的播放，而且编码的速度比传统的开源网络播放器还要快。除此之外，ijkplayer框架支持网络视频播放时弹幕的推送等功能。

开发环境  
Android Studio 3.1.2  
JDK 1.8

开发前准备  
在Android Studio新建的项目里引入ijkplayer框架（ijkplayer框架GitHub下载地址）作为依赖项，并在build.gradle（Module:app）引入文件。如下图所示。

implementation project(':ijkplayer-java')  
1  
在主项目的下\\app\\src\\main\\目录下新建一个jniLibs目录，并把ijkplayer框架需要支持的.so文件拷贝粘贴进去，如下图所示。

编码与实现  
在Android Studio的\\res\\layout目录下新建一个activity\_play.xml文件作为视频播放器的显示界面，布局代码如下。

<?xml version="1.0" encoding="utf-8"?>  
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
xmlns:tools="http://schemas.android.com/tools"  
android:id="@+id/activity\_play"  
android:layout\_width="match\_parent"  
android:layout\_height="match\_parent"  
android:background="@android:color/black"  
android:gravity="center"  
android:keepScreenOn="true"  
tools:context=".player.PlayActivity">

<com.fukaimei.cloudtv.widget.media.IjkVideoView  
android:id="@+id/video\_view"  
android:layout\_width="match\_parent"  
android:layout\_height="match\_parent"  
android:layout\_gravity="center" />

<ProgressBar  
android:id="@+id/pb\_loading"  
android:layout\_width="@dimen/dimen\_120dp"  
android:layout\_height="@dimen/dimen\_120dp"  
android:layout\_centerInParent="true"  
android:layout\_marginTop="@dimen/dimen\_120dp"  
android:indeterminate="false"  
android:indeterminateDrawable="@drawable/video\_loading"  
android:padding="@dimen/dimen\_10dp" />

</RelativeLayout>

</LinearLayout>

</LinearLayout>

</FrameLayout>

</FrameLayout>

</LinearLayout>  
</RelativeLayout>  
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在Android Studio的app\\src\\main\\java\\目录下新建一个PlayActivity,java文件作为处理视频播放器的逻辑代码，逻辑代码如下。

package com.fukaimei.cloudtv.player;

import android.app.Activity;  
import android.content.BroadcastReceiver;  
import android.content.Context;  
import android.content.Intent;  
import android.content.IntentFilter;  
import android.content.SharedPreferences;  
import android.graphics.drawable.Drawable;  
import android.media.AudioManager;  
import android.net.Uri;  
import android.os.Handler;  
import android.os.Looper;  
import android.os.Message;  
import android.support.v7.preference.PreferenceManager;  
import android.util.Log;  
import android.view.MotionEvent;  
import android.view.View;  
import android.widget.CheckBox;  
import android.widget.FrameLayout;  
import android.widget.ImageView;  
import android.widget.LinearLayout;  
import android.widget.RelativeLayout;  
import android.widget.SeekBar;  
import android.widget.TextView;

import com.fukaimei.cloudtv.R;  
import com.fukaimei.cloudtv.base.BaseActivity;  
//import com.fukaimei.cloudtv.detail.AlbumDetailActivity;  
//import com.fukaimei.cloudtv.model.sohu.Video;  
import com.fukaimei.cloudtv.utils.DateUtils;  
import com.fukaimei.cloudtv.utils.SysUtils;  
import com.fukaimei.cloudtv.widget.media.IjkVideoView;

import java.text.NumberFormat;  
import java.util.Formatter;  
import java.util.Locale;

import tv.danmaku.ijk.media.player.IMediaPlayer;  
import tv.danmaku.ijk.media.player.IjkMediaPlayer;

public class PlayActivity extends BaseActivity implements GestureDetectorController.IGestureListener \{

private static final String TAG = PlayActivity.class.getSimpleName();  
private static final int CHECK\_TIME = 1;  
private static final int CHECK\_BATTERY = 2;  
private static final int CHECK\_PROGRESS = 3;  
private static final int AUTO\_HIDE\_TIME = 10000;  
private static final int AFTER\_DRAGGLE\_HIDE\_TIME = 3000;  
private String mUrl;  
private int mStreamType;  
private int mCurrentPosition;  
// private Video mVideo;  
private IjkVideoView mVideoView;  
private RelativeLayout mLoadingLayout;  
private TextView mLoadingText;  
private FrameLayout mTopLayout;  
private LinearLayout mBottomLayout;  
private ImageView mBackButton;  
private TextView mVideoNameView;  
private TextView mSysTimeView;  
private ImageView mBigPauseButton;  
private CheckBox mPlayOrPauseButton;  
private TextView mVideoCurrentTime;  
private TextView mVideoTotalTime;  
private TextView mBitStreamView;  
private EventHandler mEventHandler;  
private boolean mIsPanelShowing = false;  
private int mBatteryLevel;  
private ImageView mBatteryView;  
private boolean mIsMove = false;//是否在屏幕上滑动  
private SeekBar mSeekBar;  
private Formatter mFormatter;  
private StringBuilder mFormatterBuilder;  
private boolean mIsDragging;  
private GestureDetectorController mGestureController;  
private TextView mDragHorizontalView;  
private TextView mDragVerticalView;  
private long mScrollProgress;  
private boolean mIsHorizontalScroll;  
private boolean mIsVerticalScroll;  
private int mCurrentLight;  
private int mMaxLight = 255;  
private int mCurrentVolume;  
private int mMaxVolume = 10;  
private AudioManager mAudioManager;  
private String mLiveTitle;//直播节目标题

@Override  
protected int getLayoutId() \{  
return R.layout.activity\_play;  
\}

@Override  
protected void onResume() \{  
super.onResume();  
\}

@Override  
protected void onPause() \{  
super.onPause();  
if (mBatteryReceiver != null) \{  
unregisterReceiver(mBatteryReceiver);  
mBatteryReceiver = null;  
\}  
//释放audiofocus  
mAudioManager.abandonAudioFocus(null);  
\}

/\*\*  
\* 通过广播获取系统电量情况  
\*/  
private BroadcastReceiver mBatteryReceiver = new BroadcastReceiver() \{  
@Override  
public void onReceive(Context context, Intent intent) \{  
mBatteryLevel = intent.getIntExtra("level", 0);  
Log.d(TAG, ">> mBatteryReceiver onReceive mBatteryLevel=" + mBatteryLevel);  
\}  
\};

@Override  
public void onScrollStart(GestureDetectorController.ScrollType type) \{  
mIsMove = true;  
switch (type) \{  
case HORIZONTAL:  
mDragHorizontalView.setVisibility(View.VISIBLE);  
mScrollProgress = -1;  
mIsHorizontalScroll = true;//水平滑动标识  
break;  
case VERTICAL\_LEFT:  
setComposeDrawableAndText(mDragVerticalView, R.drawable.ic\_light, this);  
mDragVerticalView.setVisibility(View.VISIBLE);  
updateVerticalText(mCurrentLight, mMaxLight);  
mIsVerticalScroll = true;  
break;  
case VERTICAL\_RIGH:  
if (mCurrentVolume > 0) \{  
setComposeDrawableAndText(mDragVerticalView, R.drawable.volume\_normal, this);  
\} else \{  
setComposeDrawableAndText(mDragVerticalView, R.drawable.volume\_no, this);  
\}  
mDragVerticalView.setVisibility(View.VISIBLE);  
updateVerticalText(mCurrentVolume, mMaxVolume);  
mIsVerticalScroll = true;  
break;  
\}  
\}

//用于组合图片及文字  
private void setComposeDrawableAndText(TextView textView, int drawableId, Context context) \{  
Drawable drawable = context.getResources().getDrawable(drawableId);  
//这四个参数表示把drawable绘制在矩形区域  
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());  
//设置图片在文字的上方  
//The Drawables must already have had drawable.setBounds called.  
textView.setCompoundDrawables(null, drawable, null, null);  
\}

//更新垂直方向上滑动时的百分比  
private void updateVerticalText(int current, int total) \{  
NumberFormat formater = NumberFormat.getPercentInstance();  
formater.setMaximumFractionDigits(0);//设置整数部分允许最大小数位 66.5%->66%  
String percent = formater.format((double) (current) / (double) total);  
mDragVerticalView.setText(percent);  
\}

//更新水平方向seek的进度, duration表示变化后的duration  
private void updateHorizontalText(long duration) \{  
String text = stringForTime((int) duration) + "/" + stringForTime(mVideoView.getDuration());  
mDragHorizontalView.setText(text);  
\}

// 更新进度  
@Override  
public void onScrollHorizontal(float x1, float x2) \{  
int width = getResources().getDisplayMetrics().widthPixels;  
int MAX\_SEEK\_STEP = 300000;//最大滑动5分钟  
int offset = (int) (x2 / width \* MAX\_SEEK\_STEP) + mVideoView.getCurrentPosition();  
long progress = Math.max(0, Math.min(mVideoView.getDuration(), offset));  
mScrollProgress = progress;  
updateHorizontalText(progress);  
\}

@Override  
public void onScrollVerticalLeft(float y1, float y2) \{  
int height = getResources().getDisplayMetrics().heightPixels;  
int offset = (int) (mMaxLight \* y1) / height;  
if (Math.abs(offset) > 0) \{  
mCurrentLight += offset;//得到变化后的亮度  
mCurrentLight = Math.max(0, Math.min(mMaxLight, mCurrentLight));  
// 更新系统亮度  
SysUtils.setBrightness(this, mCurrentLight);  
SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(this).edit();  
editor.putInt("shared\_preferences\_light", mCurrentLight);  
editor.commit();  
updateVerticalText(mCurrentLight, mMaxLight);  
\}  
\}

@Override  
public void onScrollVerticalRight(float y1, float y2) \{  
int height = getResources().getDisplayMetrics().heightPixels;  
int offset = (int) (mMaxVolume \* y1) / height;  
if (Math.abs(offset) > 0) \{  
mCurrentVolume += offset;//得到变化后的声音  
mCurrentVolume = Math.max(0, Math.min(mMaxVolume, mCurrentVolume));  
// 更新系统声音  
mAudioManager.setStreamVolume(AudioManager.STREAM\_MUSIC, mCurrentVolume / 10, 0);  
updateVerticalText(mCurrentVolume, mMaxVolume);  
\}  
\}

class EventHandler extends Handler \{  
public EventHandler(Looper looper) \{  
super(looper);  
\}

@Override  
public void handleMessage(Message msg) \{  
super.handleMessage(msg);  
switch (msg.what) \{  
case CHECK\_TIME:  
runOnUiThread(new Runnable() \{  
@Override  
public void run() \{  
mSysTimeView.setText(DateUtils.getCurrentTime());  
\}  
\});  
break;  
case CHECK\_BATTERY:  
runOnUiThread(new Runnable() \{  
@Override  
public void run() \{  
setCurrentBattery();  
\}  
\});  
break;  
case CHECK\_PROGRESS:  
runOnUiThread(new Runnable() \{  
@Override  
public void run() \{  
long duration = mVideoView.getDuration();  
long nowduration = (mSeekBar.getProgress() \* duration) / 1000L;  
mVideoCurrentTime.setText(stringForTime((int) nowduration));  
\}  
\});  
break;  
\}  
\}  
\}

@Override  
public boolean onTouchEvent(MotionEvent event) \{  
if (event.getAction() == MotionEvent.ACTION\_UP) \{  
if (mIsMove == false) \{  
toggleTopAndBottomLayout();  
\} else \{  
mIsMove = false;  
\}  
//水平方向,up时,seek到对应位置播放  
if (mIsHorizontalScroll) \{  
mIsHorizontalScroll = false;  
mVideoView.seekTo((int) mScrollProgress);  
//一次down,up结束后mDragHorizontalView隐藏  
mDragHorizontalView.setVisibility(View.GONE);  
\}  
if (mIsVerticalScroll) \{  
mDragVerticalView.setVisibility(View.GONE);  
mIsVerticalScroll = false;  
\}  
\}  
return mGestureController.onTouchEvent(event);  
\}

@Override  
protected void initView() \{  
mUrl = getIntent().getStringExtra("url");  
// mUrl = "http://ivi.bupt.edu.cn/hls/cctv1.m3u8";  
// mLiveTitle = "CCTV-1综合";  
mLiveTitle = getIntent().getStringExtra("title");  
mStreamType = getIntent().getIntExtra("type", 0);  
mCurrentPosition = getIntent().getIntExtra("currentPosition", 0);  
// mVideo = getIntent().getParcelableExtra("video");  
// Log.d(TAG, ">> ulr " + mUrl + ", mStreamType " + mStreamType + ", mCurrentPosition " + mCurrentPosition);  
// Log.d(TAG, ">> video " + mVideo);  
mEventHandler = new EventHandler(Looper.myLooper());  
initAudio();  
initLight();  
initGesture();  
initTopAndBottomView();  
initCenterView();  
initListener();  
//init player  
mVideoView = bindViewId(R.id.video\_view);  
IjkMediaPlayer.loadLibrariesOnce(null);  
IjkMediaPlayer.native\_profileBegin("libijkplayer.so");  
mLoadingLayout = bindViewId(R.id.rl\_loading\_layout);  
mLoadingText = bindViewId(R.id.tv\_loading\_info);  
mLoadingText.setText("正在加载中...");  
mVideoView.setVideoURI(Uri.parse(mUrl));  
mVideoView.setOnPreparedListener(new IMediaPlayer.OnPreparedListener() \{  
@Override  
public void onPrepared(IMediaPlayer mp) \{  
mVideoView.start();  
\}  
\});  
mVideoView.setOnInfoListener(new IMediaPlayer.OnInfoListener() \{  
@Override  
public boolean onInfo(IMediaPlayer mp, int what, int extra) \{  
switch (what) \{  
case IjkMediaPlayer.MEDIA\_INFO\_BUFFERING\_START:  
mLoadingLayout.setVisibility(View.VISIBLE);  
break;  
case IjkMediaPlayer.MEDIA\_INFO\_VIDEO\_RENDERING\_START:  
case IjkMediaPlayer.MEDIA\_INFO\_BUFFERING\_END:  
mLoadingLayout.setVisibility(View.GONE);  
break;  
\}  
return false;  
\}  
\});  
registerReceiver(mBatteryReceiver, new IntentFilter(Intent.ACTION\_BATTERY\_CHANGED));  
toggleTopAndBottomLayout();  
\}

private void initCenterView() \{  
mDragHorizontalView = bindViewId(R.id.tv\_horiontal\_gesture);  
mDragVerticalView = bindViewId(R.id.tv\_vertical\_gesture);  
\}

private void initAudio() \{  
mAudioManager = (AudioManager) getSystemService(AUDIO\_SERVICE);  
setVolumeControlStream(AudioManager.STREAM\_MUSIC);  
mAudioManager.requestAudioFocus(null, AudioManager.STREAM\_MUSIC, AudioManager.AUDIOFOCUS\_GAIN);  
mMaxVolume = mAudioManager.getStreamMaxVolume(AudioManager.STREAM\_MUSIC) \* 10;// 系统声音取值是0-10,\*10为了和百分比相关  
mCurrentVolume = mAudioManager.getStreamVolume(AudioManager.STREAM\_MUSIC) \* 10;  
\}

private void initLight() \{  
mCurrentLight = SysUtils.getDefaultBrightness(this);  
if (mCurrentLight == -1) \{//获取不到亮度sharedpreferences文件  
mCurrentLight = SysUtils.getBrightness(this);  
\}  
\}

private void initGesture() \{  
mGestureController = new GestureDetectorController(this, this);  
\}

private void initTopAndBottomView() \{  
mTopLayout = bindViewId(R.id.fl\_player\_top\_container);  
mBottomLayout = bindViewId(R.id.ll\_player\_bottom\_layout);  
mBackButton = bindViewId(R.id.iv\_player\_close);//返回按钮  
mVideoNameView = bindViewId(R.id.tv\_player\_video\_name);//video标题  
mBatteryView = bindViewId(R.id.iv\_battery);  
mSysTimeView = bindViewId(R.id.tv\_sys\_time);//系统时间  
mBigPauseButton = bindViewId(R.id.iv\_player\_center\_pause);//屏幕中央暂停按钮  
mPlayOrPauseButton = bindViewId(R.id.cb\_play\_pause);//底部播放暂停按钮  
mVideoCurrentTime = bindViewId(R.id.tv\_current\_video\_time);//当前播放进度  
mVideoTotalTime = bindViewId(R.id.tv\_total\_video\_time);//视频总时长  
mBitStreamView = bindViewId(R.id.tv\_bitstream);//码流  
mSeekBar = bindViewId(R.id.sb\_player\_seekbar);  
mSeekBar.setMax(1000);  
mSeekBar.setOnSeekBarChangeListener(mSeekBarChangeListener);  
mFormatterBuilder = new StringBuilder();  
mFormatter = new Formatter(mFormatterBuilder, Locale.getDefault());  
\}

private void initListener() \{  
mBackButton.setOnClickListener(new View.OnClickListener() \{  
@Override  
public void onClick(View v) \{  
finish();  
\}  
\});  
mBigPauseButton.setOnClickListener(new View.OnClickListener() \{  
@Override  
public void onClick(View v) \{  
mVideoView.start();  
updatePlayPauseStatus(true);  
\}  
\});  
mPlayOrPauseButton.setOnClickListener(new View.OnClickListener() \{  
@Override  
public void onClick(View v) \{  
handlePlayPause();  
\}  
\});  
\}

private void toggleTopAndBottomLayout() \{  
if (mIsPanelShowing) \{  
hideTopAndBottomLayout();  
\} else \{  
showTopAndBottomLayout();  
//先显示,没有任何操作,就5s后隐藏  
mEventHandler.postDelayed(new Runnable() \{  
@Override  
public void run() \{  
hideTopAndBottomLayout();  
\}  
\}, AUTO\_HIDE\_TIME);  
\}  
\}

private void showTopAndBottomLayout() \{  
mIsPanelShowing = true;  
mTopLayout.setVisibility(View.VISIBLE);  
mBottomLayout.setVisibility(View.VISIBLE);  
updateProgress();  
if (mEventHandler != null) \{  
mEventHandler.removeMessages(CHECK\_TIME);  
Message msg = mEventHandler.obtainMessage(CHECK\_TIME);  
mEventHandler.sendMessage(msg);

mEventHandler.removeMessages(CHECK\_BATTERY);  
Message batterymsg = mEventHandler.obtainMessage(CHECK\_BATTERY);  
mEventHandler.sendMessage(batterymsg);

mEventHandler.removeMessages(CHECK\_PROGRESS);  
Message progressmsg = mEventHandler.obtainMessage(CHECK\_PROGRESS);  
mEventHandler.sendMessage(progressmsg);  
\}  
switch (mStreamType) \{  
// case AlbumDetailActivity.StreamType.SUPER:  
// mBitStreamView.setText(getResources().getString(R.string.stream\_super));  
// break;  
// case AlbumDetailActivity.StreamType.NORMAL:  
// mBitStreamView.setText(getResources().getString(R.string.stream\_normal));  
// break;  
// case AlbumDetailActivity.StreamType.HIGH:  
// mBitStreamView.setText(getResources().getString(R.string.stream\_high));  
// break;  
default:  
break;  
\}  
\}

private void hideTopAndBottomLayout() \{  
if (mIsDragging == true) \{  
return;  
\}  
mIsPanelShowing = false;  
mTopLayout.setVisibility(View.GONE);  
mBottomLayout.setVisibility(View.GONE);  
\}

private void handlePlayPause() \{  
//TODO  
if (mVideoView.isPlaying()) \{//视频正在播放  
mVideoView.pause();  
updatePlayPauseStatus(false);  
\} else \{  
mVideoView.start();  
updatePlayPauseStatus(true);  
\}  
\}

private void updatePlayPauseStatus(boolean isPlaying) \{  
mBigPauseButton.setVisibility(isPlaying ? View.GONE : View.VISIBLE);  
mPlayOrPauseButton.invalidate();  
mPlayOrPauseButton.setChecked(isPlaying);  
mPlayOrPauseButton.refreshDrawableState();  
\}

@Override  
protected void initData() \{  
// Log.d(TAG, ">> initData mVideo=" + mVideo);  
// if (mVideo != null) \{  
// Log.d(TAG, ">> initData mVideoName" + mVideo.getVideoName());  
// mVideoNameView.setText(mVideo.getVideoName());  
// \}  
if (mLiveTitle != null) \{  
mVideoNameView.setText(mLiveTitle);  
\}  
\}

private void setCurrentBattery() \{  
Log.d(TAG, ">> setCurrentBattery level " + mBatteryLevel);  
if (0 < mBatteryLevel && mBatteryLevel <= 10) \{  
mBatteryView.setBackgroundResource(R.drawable.ic\_battery\_10);  
\} else if (10 < mBatteryLevel && mBatteryLevel <= 20) \{  
mBatteryView.setBackgroundResource(R.drawable.ic\_battery\_20);  
\} else if (20 < mBatteryLevel && mBatteryLevel <= 50) \{  
mBatteryView.setBackgroundResource(R.drawable.ic\_battery\_50);  
\} else if (50 < mBatteryLevel && mBatteryLevel <= 80) \{  
mBatteryView.setBackgroundResource(R.drawable.ic\_battery\_80);  
\} else if (80 < mBatteryLevel && mBatteryLevel <= 100) \{  
mBatteryView.setBackgroundResource(R.drawable.ic\_battery\_100);  
\}  
\}

@Override  
protected void onStop() \{  
super.onStop();  
if (mVideoView != null) \{  
mVideoView.stopPlayback();  
\}  
\}

private SeekBar.OnSeekBarChangeListener mSeekBarChangeListener = new SeekBar.OnSeekBarChangeListener() \{  
// seekbar进度发生变化时回调  
@Override  
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) \{  
if (!fromUser) \{  
return;  
\}  
long duration = mVideoView.getDuration();//视频时长  
long nowPosition = (duration \* progress) / 1000L;  
mVideoCurrentTime.setText(stringForTime((int) nowPosition));  
\}

// seekbar开始拖动时回调  
@Override  
public void onStartTrackingTouch(SeekBar seekBar) \{  
mIsDragging = true;  
\}

// seekbar拖动完成后回调  
@Override  
public void onStopTrackingTouch(SeekBar seekBar) \{  
mIsDragging = false;  
int progress = seekBar.getProgress();//最后拖动停止的进度  
long duration = mVideoView.getDuration();//视频时长  
long newPosition = (duration \* progress) / 1000L;//当前的进度  
mVideoView.seekTo((int) newPosition);  
mEventHandler.postDelayed(new Runnable() \{  
@Override  
public void run() \{  
hideTopAndBottomLayout();  
\}  
\}, AFTER\_DRAGGLE\_HIDE\_TIME);  
\}  
\};

private void updateProgress() \{  
int currentPosition = mVideoView.getCurrentPosition();//当前的视频位置  
int duration = mVideoView.getDuration();//视频时长  
if (mSeekBar != null) \{  
if (duration > 0) \{  
//转成long型,避免溢出  
long pos = currentPosition \* 1000L / duration;  
mSeekBar.setProgress((int) pos);  
\}  
int perent = mVideoView.getBufferPercentage();//已经缓冲的进度  
mSeekBar.setSecondaryProgress(perent);//设置缓冲进度  
mVideoCurrentTime.setText(stringForTime(currentPosition));  
mVideoTotalTime.setText(stringForTime(duration));  
\}  
\}

private String stringForTime(int timeMs) \{  
int totalSeconds = timeMs / 1000;  
int seconds = totalSeconds % 60; //换成秒  
int minutes = (totalSeconds / 60) % 60;  
int hours = (totalSeconds / 3600);  
mFormatterBuilder.setLength(0);  
if (hours > 0) \{  
return mFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString();  
\} else \{  
return mFormatter.format("%02d:%02d", minutes, seconds).toString();  
\}  
\}

//从直播模块跳转过来  
public static void launch(Activity activity, String url, String title) \{  
Intent intent = new Intent(activity, PlayActivity.class);  
intent.addFlags(Intent.FLAG\_ACTIVITY\_SINGLE\_TOP);  
intent.putExtra("url", url);  
intent.putExtra("title", title);  
activity.startActivity(intent);  
\}

\}  
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在该文件的逻辑代码中onScrollStart()方法主要实现的是对一些手势在设备屏幕上滑动进行进行监听，比如在设备横屏的情况左下上下滑调节屏幕的亮度，右上下滑调节音量的大小；setComposeDrawableAndText()方法主要实现的是用于组合图片及文字；updateVerticalText()方法主要实现的是用于更新垂直方向上滑动时的百分比；onScrollHorizontal()方法主要实现的是更新播放视频的进度。

测试与运行截图

APK下载  
apk Demo下载体验地址

————————————————  
版权声明：本文为CSDN博主「\_彼岸雨敲窗\_」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。  
原文链接：https://blog.csdn.net/fukaimei/article/details/80553709

[https_blog.csdn.net_fukaimei_article_details_80553709]: https://blog.csdn.net/fukaimei/article/details/80553709