Android版YouTube API：YouTubePlayerFragment装载微调 [英] YouTube Android API: YouTubePlayerFragment loading spinner

问题描述

我使用了Android的YouTube API样本来创建我的应用程序无边框YouTube播放器。我有一个问题，缓冲/加载进度条进行显示，即使在这之后已加载并开始播放我的视频。

I am using the Android YouTube API samples to create a chromeless YouTube player in my app. I am having an issue that the buffering / loading progress bar carries on displaying over my video even after it has loaded and started playing. I can reproduce this in the FragmentDemoActivity sample with a couple of small modifications:

public class FragmentDemoActivity extends AppCompatActivity implements YouTubePlayer.OnInitializedListener {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.fragments_demo);

        YouTubePlayerFragment youTubePlayerFragment =
            (YouTubePlayerFragment) getFragmentManager().findFragmentById(R.id.youtube_fragment);
        youTubePlayerFragment.initialize(DeveloperKey.DEVELOPER_KEY, this);
    }

    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player,
          boolean wasRestored) {
        if (!wasRestored) {
            player.setPlayerStyle(YouTubePlayer.PlayerStyle.CHROMELESS);
            player.loadVideo("nCgQDjiotG0", 10);
        }
    }

    @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {}

}

我已经改变了 FragmentDemoActivity 从 AppCompatActivity 继承，而不是 YouTubeFailureRecoveryActivity ，如文档说的是细做。我也改变了玩家的风格是在 onInitializationSuccess 边框。最后，我已经改变了 cueVideo 到 loadVideo ，只是触发自动播放。

I have changed FragmentDemoActivity to inherit from AppCompatActivity instead of YouTubeFailureRecoveryActivity, as the documentation says is fine to do. I have also changed the player style to be chromeless in onInitializationSuccess. Finally, I have changed cueVideo to loadVideo, just to trigger auto play.

这发生在多台设备，包括Nexus 5X保护。我使用的库版本1.2.2。被触发 onInitializationFailure 没有错误。

This happens on multiple devices including Nexus 5X. I am using library version 1.2.2. No error is triggered in onInitializationFailure.

视频开始缓冲后继续播放。该播放器是一个无镶边。然而，缓冲微调永不消失。这是一个bug，或我做的事情我不能做什么？

The video starts playing after buffering. The player is chromeless. However the buffering spinner never disappears. Is this a bug, or am I doing something I am not allowed to do?

推荐答案

我遇到过这个，它真的看起来像一个错误。这里是我设法解决它。

I encountered this too, it really looks like a bug. Here is how I managed to work around it.

在你的 onInitializationSuccess ，设置 PlaybackEventListener 在播放。覆盖 onBuffering 键，做这样的事情：

In your onInitializationSuccess, set a PlaybackEventListener on the player. Override the onBuffering and do something like this:

ViewGroup ytView = (ViewGroup)ytPlayerFragment.getView();
ProgressBar progressBar;
try {
    // As of 2016-02-16, the ProgressBar is at position 0 -> 3 -> 2 in the view tree of the Youtube Player Fragment
    ViewGroup child1 = (ViewGroup)ytView.getChildAt(0);
    ViewGroup child2 = (ViewGroup)child1.getChildAt(3);
    progressBar = (ProgressBar)child2.getChildAt(2);
} catch (Throwable t) {
    // As its position may change, we fallback to looking for it
    progressBar = findProgressBar(ytView);
    // I recommend reporting this problem so that you can update the code in the try branch: direct access is more efficient than searching for it
}

int visibility = isBuffering ? View.VISIBLE : View.INVISIBLE;
if (progressBar != null) {
    progressBar.setVisibility(visibility);
    // Note that you could store the ProgressBar instance somewhere from here, and use that later instead of accessing it again.
}

的 findProgressBar 方法，以防万一用作后备Youtube的code的变化：

The findProgressBar method, used as a fallback just in case the Youtube code changes:

private ProgressBar findProgressBar(View view) {
    if (view instanceof ProgressBar) {
        return (ProgressBar)view;
    } else if (view instanceof ViewGroup) {
        ViewGroup viewGroup = (ViewGroup)view;
        for (int i = 0; i < viewGroup.getChildCount(); i++) {
            ProgressBar res = findProgressBar(viewGroup.getChildAt(i));
            if (res != null) return res;
        }
    }
    return null
}

该解决方案对我的作品完美的罚款，使进度当玩家缓冲和禁用它时，它不是。

This solution works perfectly fine for me, enabling the ProgressBar when the player is buffering and disabling it when it's not.

这篇关于Android版YouTube API：YouTubePlayerFragment装载微调的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！