Question

我正在使用带有mp4视频的HTML5视频标签，有些手机播放此视频很好......坚持一些手机不播放此视频......

我怀疑在视频播放器可以播放的应用程序中？有任何内置视频播放器或需要使用浏览器视频播放器安装任何编解码器吗？

Answer 1

它仅使用手机的编解码器。问题在于解码，因为它没有使用android视频和覆盖。

尝试为您的app设置harwareacceleration为true。它应该工作。但有些手机可能没有硬件加速，因此解码失败。

但正确的方法是编写android videoplayer来播放这样的视图：

VideoPlayerActivity.java：

package com.camera.manual;

import android.app.Activity; import android.content.pm.ActivityInfo; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.view.Window; import android.view.WindowManager; import android.widget.MediaController; import android.widget.Toast; import android.widget.VideoView;

public class VideoPlayerActivity extends Activity {

    private boolean mResumed = false;
    private boolean mFocused = false;
    private boolean mControlResumed = false;
    private VideoView videoView = null;
    private int stopPosition = 0;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setTheme(R.style.Theme_TransparentVideo);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);

        setContentView(R.layout.video_view);

        videoView =(VideoView)findViewById(R.id.myvideoview);
        MediaController mediaController= new MediaController(this);
        mediaController.setAnchorView(videoView);        
        Uri uri=Uri.parse("android.resource://"+getPackageName()+"/"+R.raw.slow);        
        videoView.setMediaController(mediaController);
        videoView.setVideoURI(uri);        
        videoView.requestFocus();
        videoView.start();
    }

    @Override
    public void onPause() {
        super.onPause();
        mResumed = false;
        if (mControlResumed) {
            if (null != videoView)
                videoView.pause();
            stopPosition = videoView.getCurrentPosition();
            mControlResumed = false;
        }
    }


    @Override
    public void onResume() {
        super.onResume();
        mResumed = true;
        if (mFocused && mResumed && !mControlResumed) {
            if(null != videoView) {
                //videoView.resume();
                videoView.seekTo(stopPosition);
                videoView.start();
            }
            mControlResumed = true;
        }
    }


    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
        mFocused = hasFocus;
        if (mFocused && mResumed && !mControlResumed) {
            if (null != videoView) {
                //videoView.resume();
                videoView.seekTo(stopPosition);
                videoView.start();
            }
            mControlResumed = true;
        }
    }
}

video_view.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">

<VideoView android:id="@+id/myvideoview"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    android:layout_gravity="center" />

</FrameLayout>

并在JavaScriptInterface中定义一个这样的函数：

public void launchVideoView () {

    Intent intent = new Intent();
    intent.setClass(mContext, VideoPlayerActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    mContext.startActivity(intent);
}

然后在必须播放视频时调用此功能

Android应用程序中的HTML5视频播放器无法在某些手机中运行，为什么？

1 个答案: