错误：膨胀类com.google.android.exoplayer2.ui.SimpleExoPlayerView。

Question

错误：膨胀类com.google.android.exoplayer2.ui.SimpleExoPlayerView。

androidandroid-studioexoplayerexoplayer2.x

9

一个奇怪的问题：在使用模拟器时，代码运行正常，但在生成未签名apk时崩溃。

连接到Android Studio后，会提示以下错误：

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.tv2z.demo/com.tv2z.demo.DemoActivity}: android.view.InflateException: Binary XML file line #32: Binary XML file line #32: Error inflating class com.google.android.exoplayer2.ui.SimpleExoPlayerView
                                                                   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
                                                                   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
                                                                   at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
                                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                   at android.os.Looper.loop(Looper.java:154)
                                                                   at android.app.ActivityThread.main(ActivityThread.java:6119)
                                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
                                                                Caused by: android.view.InflateException: Binary XML file line #32: Binary XML file line #32: Error inflating class com.google.android.exoplayer2.ui.SimpleExoPlayerView
                                                                Caused by: android.view.InflateException: Binary XML file line #32: Error inflating class com.google.android.exoplayer2.ui.SimpleExoPlayerView
                                                                Caused by: java.lang.reflect.InvocationTargetException
                                                                   at java.lang.reflect.Constructor.newInstance0(Native Method)
                                                                   at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
                                                                   at android.view.LayoutInflater.createView(LayoutInflater.java:645)
                                                                   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
                                                                   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
                                                                   at android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
                                                                   at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
                                                                   at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
                                                                   at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
                                                                   at android.view.LayoutInflater.inflate(LayoutInflater.java:377)
                                                                   at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:292)
                                                                   at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
                                                                   at com.tv2z.demo.DemoActivity.onCreate(***DemoActivity.java:80***)
                                                                   at android.app.Activity.performCreate(Activity.java:6679)
                                                                   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                                                                   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
                                                                   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
                                                                   at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
                                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                   at android.os.Looper.loop(Looper.java:154)
                                                                   at android.app.ActivityThread.main(ActivityThread.java:6119)
                                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
                                                                Caused by: java.lang.NoSuchFieldError: No field SimpleExoPlayerView_shutter_background_color of type I in class Lcom/google/android/exoplayer2/ui/R$styleable; or its superclasses (declaration of 'com.google.android.exoplayer2.ui.R$styleable' appears in /data/app/com.tv2z.demo-1/base.apk:classes9.dex)
                                                                   at com.google.android.exoplayer2.ui.SimpleExoPlayerView.<init>(SourceFile:274)
                                                                   at com.google.android.exoplayer2.ui.SimpleExoPlayerView.<init>(SourceFile:233)

这是我的XML文件：

<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".DemoActivity">

<TextView
android:id="@+id/sample_app_title"
android:text="ExoPlayer 2 Example App:"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="30sp"
android:textColor="#000000"
android:gravity="center_horizontal"/>

<TextView
android:id="@+id/resolution_textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Resolution"
android:textSize="30px"
android:background="#FFFFFF"
android:textColor="#000000"
android:layout_below="@+id/sample_app_title"
android:gravity="center_horizontal"/>

<com.google.android.exoplayer2.ui.SimpleExoPlayerView
android:id="@+id/exo_player_view"
android:focusable="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/resolution_textView"
android:layout_marginTop="2dp" />
</RelativeLayout>

这是我的DemoActivity文件： public class DemoActivity扩展了AppCompatActivity，同时实现了View.OnClickListener和PlaybackControlView.VisibilityListener接口。

private static final DefaultBandwidthMeter BANDWIDTH_METER = new DefaultBandwidthMeter();
private static final String TAG = "PlayerActivity";
private SimpleExoPlayer player;
private SimpleExoPlayerView playerView;
String videoURL = "http://www.sample-videos.com/video/mp4/360/big_buck_bunny_360p_30mb.mp4";
private long playbackPosition;
private int currentWindow;
private long playerPosition;
private boolean isTimelineStatic;
private int playerWindow;
private Timeline.Window window;
private boolean shouldAutoPlay;
private CustPlugin plugin;
public Tracker tracker;
public MediaDetails medDetails;
private EventLogger eventLogger;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    shouldAutoPlay = false; // make it false to stop autoplay
    setContentView(R.layout.activity_demo);
    ButterKnife.bind(this);
    window = new Timeline.Window();
    playerView = new SimpleExoPlayerView(this);
    playerView = (SimpleExoPlayerView) findViewById(R.id.exo_player_view);
    playerView.setControllerVisibilityListener(this);
    playerView.requestFocus();
    tracker = ((Tv2zApplication) getApplication()).getTracker();
}

private MediaDetails setMediaDetails() {
    medDetails = new MediaDetails();
    medDetails.setMediaId(CustPlugin.generateUniqueId());
    medDetails.setMediaTitle("Test Exo Android Player");
    medDetails.setMediaUrl(videoURL);
    medDetails.setPlayerName("Exo Android Player");
    medDetails.setWidth("1280");
    medDetails.setHeight("960");
    medDetails.setMediaLength((int)player.getDuration()/1000);
    medDetails.setCdUserId("EXO001");
    medDetails.setCdMediaId("1234");
    medDetails.setCdProgramType("VOD");
    medDetails.setCdProgramId("4567");
    medDetails.setCdDuration(52);
    return medDetails;
}
/**
 // time_to_initial_play will be ZERO, if "shouldAutoPlay" is true
 // The Function onStart() and onResume() are same, as triggered only once when player is loaded
 // Difference is that onStart is triggered for API 23 and up while onResume for API less than 23
 **/
@Override
protected void onStart() {
    super.onStart();
    if (Util.SDK_INT > 23) {
        initializePlayer();
    }
}

@Override
protected void onResume() {
    super.onResume();
    hideSystemUi();
        if (Util.SDK_INT <= 23 || player == null) {
    initializePlayer();
       }
}
@Override
protected void onStop() {
    super.onStop();
    releasePlayer();
}

@Override
public boolean dispatchKeyEvent(KeyEvent event) {

    // See whether the player view wants to handle media or DPAD keys events.

    return playerView.dispatchKeyEvent(event) || super.dispatchKeyEvent(event);

}


private void initializePlayer() {
    try {
        BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
        TrackSelector trackSelector = new DefaultTrackSelector(new AdaptiveTrackSelection.Factory(bandwidthMeter));
        player = ExoPlayerFactory.newSimpleInstance(this, trackSelector);
        Uri videoURI = Uri.parse(videoURL);
        DefaultHttpDataSourceFactory dataSourceFactory = new DefaultHttpDataSourceFactory("exoplayer_video");
        ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
        MediaSource mediaSource = new ExtractorMediaSource(videoURI, dataSourceFactory, extractorsFactory, null, null);
       //playerView.setPlayer(player);

        if (isTimelineStatic) {
            if (playerPosition == C.TIME_UNSET) {
                player.seekToDefaultPosition(playerWindow);
            } else {
                player.seekTo(playerWindow, playerPosition);
            }
        }
        player.prepare(mediaSource);
        player.setPlayWhenReady(shouldAutoPlay);
        medDetails =  setMediaDetails();
        plugin = new CustPlugin(player,tracker,medDetails);
        plugin.startMonitoring();
        playerView.setPlayer(player);
    }catch (Exception e){
        Toast.makeText(this, "Failed to Initialize!", Toast.LENGTH_LONG).show();
        Log.e("Demo Activity"," Exoplayer Error "+ e.toString());
    }
}

@Override
public void onClick(View v) {
    switch (v.getId()){
        case R.id.exo_play:
            Toast.makeText(this,"Video Resumed",Toast.LENGTH_LONG).show();
            break;
        case R.id.exo_ffwd:
            Toast.makeText(this,"FFWD clicked",Toast.LENGTH_LONG).show();
            break;
        case R.id.exo_prev:
            Toast.makeText(this,"REW clicked",Toast.LENGTH_LONG).show();
            break;
        default:
            break;
    }
}

private void releasePlayer(){
    if (player != null) {
        playbackPosition = player.getCurrentPosition();
        currentWindow = player.getCurrentWindowIndex();
        shouldAutoPlay = player.getPlayWhenReady();
        player.setVideoDebugListener(null);
        player.setAudioDebugListener(null);
        playerPosition = C.TIME_UNSET;
        Timeline timeline = player.getCurrentTimeline();
        if (!timeline.isEmpty() && timeline.getWindow(playerWindow, window).isSeekable) {
            playerPosition = player.getCurrentPosition();
        }
        player.release();
        player = null;
        plugin.stopMonitoring();
    }
}

@SuppressLint("InlinedApi")
private void hideSystemUi() {
    playerView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
    );
}

@Override
public void onVisibilityChange(int visibility) {

}

}// End Class

- Ayush Badraj

请提供包含第32行 <SimpleExoPlayerView> 的布局文件。同时，请告知您的Android版本和支持版本。 - Rahul

注意：我已经尝试在XML中使用FrameLayout和Fragment，但仍然出现了相同的问题。 - Ayush Badraj

以下是依赖项： compile 'com.android.support:appcompat-v7:25.3.1' compile 'com.jakewharton.timber:timber:4.5.1' compile 'com.android.support:support-v4:25.3.1' compile 'com.android.support:design:25.3.1' compile 'com.jakewharton:butterknife:8.4.0' apt 'com.jakewharton:butterknife-compiler:8.4.0' compile 'com.google.android.exoplayer:exoplayer:r2.5.2' compile 'com.google.android.gms:play-services-location:9.8.0' - Ayush Badraj

尝试在attrsx.xml中声明SimpleExoPlayerView_shutter_background_color。这是您的Android（手机）无法找到的属性。 - Rahul

我尝试使用SimpleExoPlayerView_shutter_background_color，但仍然存在相同的问题，即在模拟器上运行正常，但在手机上无法运行。 - Ayush Badraj

显示剩余2条评论

4个回答

9

尝试将您的XML文件从以下内容更改为：

<com.google.android.exoplayer2.ui.SimpleExoPlayerView
android:id="@+id/exo_player_view"
android:focusable="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/resolution_textView"
android:layout_marginTop="2dp" />

to:

<com.google.android.exoplayer2.ui.PlayerView
android:id="@+id/exo_player_view"
android:focusable="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/resolution_textView"
android:layout_marginTop="2dp" />

然后在您的DemoActivity中更改：

private SimpleExoPlayerView playerView;

to:

private PlayerView playerView;

此外，请确保你的类型转换是正确的：

playerView = (PlayerView) findViewById(R.id.exo_player_view);

请注意，我使用的是版本2.7.3：

compile 'com.google.android.exoplayer:exoplayer:2.7.3'

- Vid Bregar

切换到playerView后，那个崩溃问题得到了解决，但是出现了另一个崩溃：<BR/> E AndroidRuntime: Caused by: java.lang.ClassCastException: android.support.v7.widget.AppCompatSeekBar cannot be cast to com.google.android.exoplayer2.ui.TimeBar07-11 02:39:42.313 11914 11914 E AndroidRuntime: at com.google.android.exoplayer2.ui.PlayerControlView.<init>(PlayerControlView.java:311) - parul

然后尝试用TimeBar替换AppCompatSeekBar。 - Vid Bregar

1

我遇到了同样的问题，我使用了com.google.android.exoplayer2.ui.PlayerView和最新版本的ExoPlayer。当我将版本更改为2.8.4时，它正常工作了。为什么呢？请参见此处：https://github.com/google/ExoPlayer/issues/5138。 - android developer

0

因为我有几个模块，所以之前我将依赖项添加到.app模块的build.gradle中。最后我通过在适当的模块的build.gradle中添加依赖项来解决了这个问题。

implementation 'com.google.android.exoplayer:exoplayer-core:2.12.0'
implementation 'com.google.android.exoplayer:exoplayer-dash:2.12.0'
implementation 'com.google.android.exoplayer:exoplayer-ui:2.12.0'

- Sterlingking

-2

将compileOptions粘贴到android范围中，如下所示：

   android {
        compileOptions{
              sourceCompatibility JavaVersion.VERSION_1_8
              targetCompatibility JavaVersion.VERSION_1_8
       }
    }

- Dev_Anay

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- android developer · Accepted Answer

看起来这是一个已知问题，根据文档的说法，你应该使用这个（在这里找到解决方案）：

compileOptions {
    targetCompatibility JavaVersion.VERSION_1_8
}

我现在已经测试过了，看起来它与最新版本的ExoPlayer很好地配合使用。