功能强大的Vitamio视频播放器的使用教程

其他 2018-06-30 04:57:28 阅读次数: 0

Vitamio简介：Vitamio是一个支持所有Android设备的多媒体框架。Vitamio与Android默认的MediaPlayer工作方式相似，但包含更加强大的功能！（注意：Vitamio商业化后个人免费、公司收费）

vitamio官网：https://www.vitamio.org

vitamio SDK地址：https://github.com/yixia/VitamioBundle

之前开发一个视频播放类的项目，需要实现在线播放的功能，找了很多视频播放框架，觉得Vitamio视频播放框架还不错，也相对稳定，但是在网上找了很多教程都少之又少，Vitamio官网写的教程也不是很清晰，所以就自己就把Vitamio在github上的demo进行研究，花了点时间写了个demo出来并且将Vitamio的视频控制器界面进行自定义，支持视频亮度、音量的调节，话不多说，先上效果图。

附上 Demo的github地址
自定义视频控制器


8F05796762EDAA5275D59EB31D3248E9.jpg

目前，作者只实现了自定义手势调节亮度、音量的加减以及播放控制的功能，更多的功能等待着大家一起去挖掘。

使用步骤：

1.引入vitamio SDK的方式有两种：

（1）直接以module的方式引入

（2）通过Complie的方式引入

作者是采用的第一种方式，下面是一些需要注意的地方：

  • 清单文件配置：
    1）权限设置： 
    <uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    2）application配置： 
    <!-- 必须初始化 -->
<activity    
android:name="io.vov.vitamio.activity.InitActivity"    
android:configChanges="orientation|screenSize|smallestScreenSize|keyboard|keyboardHidden|navigation"    
android:launchMode="singleTop"    
android:theme="@android:style/Theme.NoTitleBar"    
android:windowSoftInputMode="stateAlwaysHidden" />

2.主要代码：

  • 播放视频代码
package com.stx.vitamiodemo;
import android.content.res.Configuration;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ProgressBar;
import android.widget.TextView;
import io.vov.vitamio.LibsChecker;
import io.vov.vitamio.MediaPlayer;
import io.vov.vitamio.Vitamio;
import io.vov.vitamio.widget.MediaController;
import io.vov.vitamio.widget.VideoView;
/**
 * Vitamio视频播放框架Demo
 */
public class MainActivity extends AppCompatActivity implements MediaPlayer.OnInfoListener, 

MediaPlayer.OnBufferingUpdateListener{
    //视频地址
    private String path = "http://baobab.wdjcdn.com/145076769089714.mp4";
    private Uri uri;
    private ProgressBar pb;
    private TextView downloadRateView, loadRateView;
    private CustomMediaController mCustomMediaController;
    private VideoView mVideoView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //定义全屏参数
        int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
        //获得当前窗体对象
        Window window = MainActivity.this.getWindow();
        //设置当前窗体为全屏显示
        window.setFlags(flag, flag);
        //必须写这个，初始化加载库文件
        Vitamio.initialize(this);
        //设置视频解码监听
        if (!LibsChecker.checkVitamioLibs(this)) {
            return;
        }
        setContentView(R.layout.activity_main);
        initView();
        initData();

       //获取上一次保存的进度
        long progress = SPUtils.getLong(this, "progress");//此处使用SharedPreferences保存当前播放进度，SPUtils是我自己封装的工具类

        mVideoView.seekTo(progress);
        mVideoView.start();
    }
    //初始化控件
    private void initView() {
        mVideoView = (VideoView) findViewById(R.id.buffer);
        mCustomMediaController=new CustomMediaController(this,mVideoView,this);
        mCustomMediaController.setVideoName("白火锅 x 红火锅");
        pb = (ProgressBar) findViewById(R.id.probar);
        downloadRateView = (TextView) findViewById(R.id.download_rate);
        loadRateView = (TextView) findViewById(R.id.load_rate);
    }

    //初始化数据
    private void initData() {
        uri = Uri.parse(path);
        mVideoView.setVideoURI(uri);//设置视频播放地址
        mCustomMediaController.show(5000);
        mVideoView.setMediaController(mCustomMediaController);
        mVideoView.setVideoQuality(MediaPlayer.VIDEOQUALITY_HIGH);//高画质
        mVideoView.requestFocus();
        mVideoView.setOnInfoListener(this);
        mVideoView.setOnBufferingUpdateListener(this);
        mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mediaPlayer) {
                mediaPlayer.setPlaybackSpeed(1.0f);
            }
        });
    }

    @Override
    public boolean onInfo(MediaPlayer mp, int what, int extra) {
        switch (what) {
            case MediaPlayer.MEDIA_INFO_BUFFERING_START:
                if (mVideoView.isPlaying()) {
                    mVideoView.pause();
                    pb.setVisibility(View.VISIBLE);
                    downloadRateView.setText("");
                    loadRateView.setText("");
                    downloadRateView.setVisibility(View.VISIBLE);
                    loadRateView.setVisibility(View.VISIBLE);

                }
                break;
            case MediaPlayer.MEDIA_INFO_BUFFERING_END:
                mVideoView.start();
                pb.setVisibility(View.GONE);
                downloadRateView.setVisibility(View.GONE);
                loadRateView.setVisibility(View.GONE);
                break;
            case MediaPlayer.MEDIA_INFO_DOWNLOAD_RATE_CHANGED:
                downloadRateView.setText("" + extra + "kb/s" + "  ");
                break;
        }
        return true;
    }

    @Override
    public void onBufferingUpdate(MediaPlayer mp, int percent) {
        loadRateView.setText(percent + "%");
    }


    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        //屏幕切换时，设置全屏
        if (mVideoView != null){
            mVideoView.setVideoLayout(VideoView.VIDEO_LAYOUT_SCALE, 0);
        }
        super.onConfigurationChanged(newConfig);
    }



  @Override
    protected void onPause() {
        super.onPause();
        //保存进度
        SPUtils.putLong(this,"progress",mVideoView.getCurrentPosition());
    }

}
  • 自定义视频控制器：
    主要实现了手势调节视频亮度、音量的加减控制。
package com.stx.vitamiodemo;

import android.app.Activity;
import android.content.Context;
import android.media.AudioManager;
import android.os.Handler;
import android.os.Message;
import android.view.Display;
import android.view.GestureDetector;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.SeekBar;
import android.widget.TextView;

import io.vov.vitamio.widget.MediaController;
import io.vov.vitamio.widget.VideoView;

/**
 * Created by xhb on 2016/3/1.
 * 自定义视频控制器
 */
public class CustomMediaController extends MediaController {
    private static final int HIDEFRAM = 0;//控制提示窗口的显示

    private GestureDetector mGestureDetector;
    private ImageButton img_back;//返回按钮
    private TextView mFileName;//文件名
    private VideoView videoView;
    private Activity activity;
    private Context context;
    private String videoname;//视频名称
    private int controllerWidth = 0;//设置mediaController高度为了使横屏时top显示在屏幕顶端


    private View mVolumeBrightnessLayout;//提示窗口
    private ImageView mOperationBg;//提示图片
    private TextView mOperationTv;//提示文字
    private AudioManager mAudioManager;
    private SeekBar progress;
    private boolean mDragging;
    private MediaPlayerControl player;
    //最大声音
    private int mMaxVolume;
    // 当前声音
    private int mVolume = -1;
    //当前亮度
    private float mBrightness = -1f;


    //返回监听
    private View.OnClickListener backListener = new View.OnClickListener() {
        public void onClick(View v) {
            if (activity != null) {
                activity.finish();
            }
        }
    };

    private Handler myHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            long pos;
            switch (msg.what) {
                case HIDEFRAM://隐藏提示窗口
                    mVolumeBrightnessLayout.setVisibility(View.GONE);
                    mOperationTv.setVisibility(View.GONE);
                    break;
            }
        }
    };


    //videoview 用于对视频进行控制的等，activity为了退出
    public CustomMediaController(Context context, VideoView videoView, Activity activity) {
        super(context);
        this.context = context;
        this.videoView = videoView;
        this.activity = activity;
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        controllerWidth = wm.getDefaultDisplay().getWidth();
        mGestureDetector = new GestureDetector(context, new MyGestureListener());

    }

    @Override
    protected View makeControllerView() {
        //此处的   mymediacontroller  为我们自定义控制器的布局文件名称
        View v = ((LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate

(getResources().getIdentifier("mymediacontroller", "layout", getContext().getPackageName()), this);
        v.setMinimumHeight(controllerWidth);
        //获取控件
        img_back = (ImageButton) v.findViewById(getResources().getIdentifier("mediacontroller_top_back", "id", 

context.getPackageName()));
        mFileName = (TextView) v.findViewById(getResources().getIdentifier("mediacontroller_filename", "id", 

context.getPackageName()));

        if (mFileName != null) {
            mFileName.setText(videoname);
        }
        //声音控制
        mVolumeBrightnessLayout = (RelativeLayout) v.findViewById(R.id.operation_volume_brightness);
        mOperationBg = (ImageView) v.findViewById(R.id.operation_bg);
        mOperationTv = (TextView) v.findViewById(R.id.operation_tv);
        mOperationTv.setVisibility(View.GONE);
        mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        mMaxVolume = mAudioManager
                .getStreamMaxVolume(AudioManager.STREAM_MUSIC);

        //注册事件监听
        img_back.setOnClickListener(backListener);
        return v;
    }

    @Override
    public boolean dispatchKeyEvent(KeyEvent event) {
        System.out.println("MYApp-MyMediaController-dispatchKeyEvent");
        return true;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (mGestureDetector.onTouchEvent(event)) return true;
        // 处理手势结束
        switch (event.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_UP:
                endGesture();
                break;
        }
        return super.onTouchEvent(event);
    }

    /**
     * 手势结束
     */
    private void endGesture() {
        mVolume = -1;
        mBrightness = -1f;
        // 隐藏
        myHandler.removeMessages(HIDEFRAM);
        myHandler.sendEmptyMessageDelayed(HIDEFRAM, 1);
    }

    private class MyGestureListener extends GestureDetector.SimpleOnGestureListener {
        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return false;
        }

        /**
         * 因为使用的是自定义的mediaController 当显示后，mediaController会铺满屏幕，
         * 所以VideoView的点击事件会被拦截，所以重写控制器的手势事件，
         * 将全部的操作全部写在控制器中，
         * 因为点击事件被控制器拦截，无法传递到下层的VideoView，
         * 所以 原来的单机隐藏会失效，作为代替，
         * 在手势监听中onSingleTapConfirmed（）添加自定义的隐藏/显示，
         *
         * @param e
         * @return
         */
        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            //当手势结束，并且是单击结束时，控制器隐藏/显示
            toggleMediaControlsVisiblity();
            return super.onSingleTapConfirmed(e);
        }

        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

        //滑动事件监听
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            float mOldX = e1.getX(), mOldY = e1.getY();
            int y = (int) e2.getRawY();
            int x = (int) e2.getRawX();
            Display disp = activity.getWindowManager().getDefaultDisplay();
            int windowWidth = disp.getWidth();
            int windowHeight = disp.getHeight();
            if (mOldX > windowWidth * 3.0 / 4.0) {// 右边滑动 屏幕 3/4
                onVolumeSlide((mOldY - y) / windowHeight);
            } else if (mOldX < windowWidth * 1.0 / 4.0) {// 左边滑动 屏幕 1/4
                onBrightnessSlide((mOldY - y) / windowHeight);
            }
            return super.onScroll(e1, e2, distanceX, distanceY);
        }

        @Override
        public boolean onDoubleTap(MotionEvent e) {
            playOrPause();
            return true;
        }


        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            return super.onFling(e1, e2, velocityX, velocityY);
        }
    }

    /**
     * 滑动改变声音大小
     *
     * @param percent
     */
    private void onVolumeSlide(float percent) {
        if (mVolume == -1) {
            mVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
            if (mVolume < 0)
                mVolume = 0;

            // 显示
            mVolumeBrightnessLayout.setVisibility(View.VISIBLE);
            mOperationTv.setVisibility(VISIBLE);
        }

        int index = (int) (percent * mMaxVolume) + mVolume;
        if (index > mMaxVolume)
            index = mMaxVolume;
        else if (index < 0)
            index = 0;
        if (index >= 10) {
            mOperationBg.setImageResource(R.drawable.volmn_100);
        } else if (index >= 5 && index < 10) {
            mOperationBg.setImageResource(R.drawable.volmn_60);
        } else if (index > 0 && index < 5) {
            mOperationBg.setImageResource(R.drawable.volmn_30);
        } else {
            mOperationBg.setImageResource(R.drawable.volmn_no);
        }
        //DecimalFormat    df   = new DecimalFormat("######0.00");
        mOperationTv.setText((int) (((double) index / mMaxVolume) * 100) + "%");
        // 变更声音
        mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, index, 0);

    }

    /**
     * 滑动改变亮度
     *
     * @param percent
     */
    private void onBrightnessSlide(float percent) {
        if (mBrightness < 0) {
            mBrightness = activity.getWindow().getAttributes().screenBrightness;
            if (mBrightness <= 0.00f)
                mBrightness = 0.50f;
            if (mBrightness < 0.01f)
                mBrightness = 0.01f;

            // 显示
            mVolumeBrightnessLayout.setVisibility(View.VISIBLE);
            mOperationTv.setVisibility(VISIBLE);

        }


        WindowManager.LayoutParams lpa = activity.getWindow().getAttributes();
        lpa.screenBrightness = mBrightness + percent;
        if (lpa.screenBrightness > 1.0f)
            lpa.screenBrightness = 1.0f;
        else if (lpa.screenBrightness < 0.01f)
            lpa.screenBrightness = 0.01f;
        activity.getWindow().setAttributes(lpa);

        mOperationTv.setText((int) (lpa.screenBrightness * 100) + "%");
        if (lpa.screenBrightness * 100 >= 90) {
            mOperationBg.setImageResource(R.drawable.light_100);
        } else if (lpa.screenBrightness * 100 >= 80 && lpa.screenBrightness * 100 < 90) {
            mOperationBg.setImageResource(R.drawable.light_90);
        } else if (lpa.screenBrightness * 100 >= 70 && lpa.screenBrightness * 100 < 80) {
            mOperationBg.setImageResource(R.drawable.light_80);
        } else if (lpa.screenBrightness * 100 >= 60 && lpa.screenBrightness * 100 < 70) {
            mOperationBg.setImageResource(R.drawable.light_70);
        } else if (lpa.screenBrightness * 100 >= 50 && lpa.screenBrightness * 100 < 60) {
            mOperationBg.setImageResource(R.drawable.light_60);
        } else if (lpa.screenBrightness * 100 >= 40 && lpa.screenBrightness * 100 < 50) {
            mOperationBg.setImageResource(R.drawable.light_50);
        } else if (lpa.screenBrightness * 100 >= 30 && lpa.screenBrightness * 100 < 40) {
            mOperationBg.setImageResource(R.drawable.light_40);
        } else if (lpa.screenBrightness * 100 >= 20 && lpa.screenBrightness * 100 < 20) {
            mOperationBg.setImageResource(R.drawable.light_30);
        } else if (lpa.screenBrightness * 100 >= 10 && lpa.screenBrightness * 100 < 20) {
            mOperationBg.setImageResource(R.drawable.light_20);
        }

    }


    /**
     * 设置视频文件名
     *
     * @param name
     */
    public void setVideoName(String name) {
        videoname = name;
        if (mFileName != null) {
            mFileName.setText(name);
        }
    }

    /**
     * 隐藏或显示
     */
    private void toggleMediaControlsVisiblity() {
        if (isShowing()) {
            hide();
        } else {
            show();
        }
    }

    /**
     * 播放/暂停
     */
    private void playOrPause() {
        if (videoView != null)
            if (videoView.isPlaying()) {
                videoView.pause();
            } else {
                videoView.start();
            }
    }
}
  • 自定义控制器布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    
android:orientation="vertical"    
android:layout_width="match_parent"    
android:background="@drawable/video_player_bg_color"    
android:layout_height="match_parent">    
<RelativeLayout        
android:layout_width="match_parent"        
android:layout_height="match_parent">        
<RelativeLayout            
android:layout_width="match_parent"            
android:background="#77000000"            
android:layout_height="34dp">            
<ImageButton                
android:id="@+id/mediacontroller_top_back"                
android:layout_width="50dp"                
android:layout_height="match_parent"                
android:layout_alignParentLeft="true"                
android:background="@null"                
android:src="@drawable/ic_player_close_white"/>            
<TextView                
android:id="@+id/mediacontroller_filename"                
style="@style/MediaController_Text"                
android:layout_width="wrap_content"                
android:layout_height="wrap_content"                
android:layout_centerVertical="true"                
android:layout_marginLeft="5dp"                
android:layout_toRightOf="@+id/mediacontroller_top_back"                
android:ellipsize="marquee"                
android:singleLine="true"               
android:text="file name"/>            
<ImageButton                
android:id="@+id/mediacontroller_share"                
android:layout_width="50dp"                
android:layout_height="match_parent"                
android:background="@null"                
android:src="@drawable/ic_action_share_without_padding"                
android:layout_alignParentRight="true"/>            
<ImageButton                
android:id="@+id/mediacontroller_favorite"                
android:layout_width="50dp"                
android:layout_height="match_parent"                
android:background="@null"                
android:layout_toLeftOf="@id/mediacontroller_share"                
android:src="@drawable/ic_action_favorites"/>        
</RelativeLayout>        
<ImageButton            
android:id="@+id/mediacontroller_play_pause"            
android:layout_width="wrap_content"            
android:layout_height="wrap_content"            
android:layout_centerInParent="true"            
android:src="@drawable/paly_selector"            
android:background="@null"/>        
<RelativeLayout            
android:id="@+id/operation_volume_brightness"            
android:layout_width="150dp"            
android:layout_height="75dp"            
android:layout_centerInParent="true"            
android:background="@drawable/videobg"            
android:orientation="horizontal"            
android:padding="0dip"            
android:visibility="gone">            
<ImageView                
android:id="@+id/operation_bg"                
android:layout_width="wrap_content"                
android:layout_height="wrap_content"                
android:layout_centerInParent="true"                
android:src="@drawable/video_volumn_bg"/>            
<TextView                
android:id="@+id/operation_tv"                
android:layout_width="wrap_content"                
android:layout_height="wrap_content"                
android:layout_alignBottom="@+id/operation_bg"                
android:layout_centerHorizontal="true"                
android:layout_alignParentBottom ="true"                
android:text="32:22/45:00"                
android:textColor="#ffffff"                
android:textSize="10sp"                
android:visibility="gone"               
/>        
</RelativeLayout>        
<RelativeLayout            
android:layout_width="match_parent"            
android:layout_alignParentBottom="true"            
android:background="#77000000"            
android:layout_height="50dp">            
<TextView                
android:id="@+id/mediacontroller_time_current"                
style="@style/MediaController_Text"                
android:layout_width="wrap_content"                
android:layout_height="wrap_content"                
android:layout_centerVertical="true"                
android:layout_marginLeft="15dp"                
android:text="33:33:33"                
/>            
<TextView                
android:id="@+id/mediacontroller_time_total"                
style="@style/MediaController_Text"                
android:layout_width="wrap_content"                
android:layout_height="wrap_content"                
android:layout_alignParentRight="true"                
android:layout_centerVertical="true"                
android:layout_marginRight="15dp"                
android:text="33:33:33"/>            
<SeekBar                
android:id="@+id/mediacontroller_seekbar"                
style="@style/MediaController_SeekBar"                
android:layout_width="match_parent"                
android:layout_height="wrap_content"                
android:layout_centerVertical="true"                
android:layout_toLeftOf="@id/mediacontroller_time_total"                
android:layout_toRightOf="@id/mediacontroller_time_current"                
android:focusable="true"                
android:max="1000"/>        
</RelativeLayout>    
</RelativeLayout>
</LinearLayout>
  • 视频播放界面布局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    
android:layout_width="match_parent"    
android:layout_height="match_parent">    
<io.vov.vitamio.widget.CenterLayout        
android:layout_width="match_parent"        
android:layout_height="match_parent"        
android:orientation="vertical">        
<io.vov.vitamio.widget.VideoView            
android:id="@+id/buffer"            
android:layout_width="match_parent"            
android:layout_height="match_parent"            
android:layout_centerHorizontal="true"            
android:layout_centerVertical="true" />    
</io.vov.vitamio.widget.CenterLayout>    
<LinearLayout        
android:layout_width="wrap_content"        
android:layout_height="wrap_content"        
android:layout_centerInParent="true"        
android:orientation="horizontal">        
<ProgressBar            
android:id="@+id/probar"            
style="?android:attr/progressBarStyleLarge"            
android:layout_width="50dp"            
android:layout_height="50dp" />        
<TextView            
android:id="@+id/download_rate"            
android:layout_width="wrap_content"            
android:layout_height="wrap_content"            
android:layout_gravity="center"            
android:textColor="#FFFFFF"           
android:text="" />        
<TextView            
android:id="@+id/load_rate"            
android:layout_width="wrap_content"            
android:layout_height="wrap_content"            
android:layout_gravity="center"            
android:textColor="#FFFFFF"            
android:text="" />    
</LinearLayout>
</RelativeLayout>

解决部分视频不能全屏播放

播放界面的布局如下，即可拉伸视频，主要不要嵌套vitamio自定义的CenterLayout布局

<!--解决部分视频视频由于分辨率问题，不能全屏播放，在此处不要嵌套vitamio的CenterLayout布局-->
    <!--<io.vov.vitamio.widget.CenterLayout-->
        <!--android:layout_width="match_parent"-->
        <!--android:layout_height="match_parent"-->
        <!--android:orientation="vertical">-->

        <io.vov.vitamio.widget.VideoView
            android:id="@+id/buffer"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentBottom="true"/>

    <!--</io.vov.vitamio.widget.CenterLayout>-->

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:orientation="horizontal">

        <ProgressBar
            android:id="@+id/probar"
            style="?android:attr/progressBarStyleLarge"
            android:layout_width="50dp"
            android:layout_height="50dp"/>

        <TextView
            android:id="@+id/download_rate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text=""
            android:textColor="#FFFFFF"/>

        <TextView
            android:id="@+id/load_rate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text=""
            android:textColor="#FFFFFF"/>
    </LinearLayout>

</RelativeLayout>

github地址
写的不好之处还望大家见谅。、

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