膨胀类 com.google.android.exoplayer2.ui.SimpleExoPlayerView 时出错
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【中文标题】膨胀类 com.google.android.exoplayer2.ui.SimpleExoPlayerView 时出错【英文标题】：Error inflating class com.google.android.exoplayer2.ui.SimpleExoPlayerView 【发布时间】：2018-09-07 01:15:42 【问题描述】：一件奇怪的事情：代码在使用模拟器时运行良好，但在运行构建未签名的 apk 时崩溃。
当连接到android studio时，出现如下错误：
java.lang.RuntimeException: Unable to start activity ComponentInfocom.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_
android:layout_
tools:context=".DemoActivity">
<TextView
android:id="@+id/sample_app_title"
android:text="ExoPlayer 2 Example App:"
android:layout_
android:layout_
android:textSize="30sp"
android:textColor="#000000"
android:gravity="center_horizontal"/>
<TextView
android:id="@+id/resolution_textView"
android:layout_
android:layout_
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_
android:layout_
android:layout_below="@+id/resolution_textView"
android:layout_marginTop="2dp" />
</RelativeLayout>
这是我的 DemoActivity 文件： 公共类 DemoActivity 扩展 AppCompatActivity 实现 View.OnClickListener,PlaybackControlView.VisibilityListener
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
【问题讨论】：
请提供第32行有&#60;SimpleExoPlayerView&#62;的布局文件。另外请告诉您的android版本和支持版本。
注意：我已经尝试在 XML 中使用 FrameLayout 和 Fragment，但仍然出现同样的问题。
我的 android Studio 版本是 3.0.1 在模拟器的 android API 25 上运行应用程序，我的手机是 redmi4 API 25，而且只有一个 xml 文件。
这些是依赖项： 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' 编译 'com.google.android.gms:play-services-location:9.8.0'
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。
【参考方案1】：
似乎这是一个已知问题，docs 说你应该使用它（找到解决方案 here）：
compileOptions
targetCompatibility JavaVersion.VERSION_1_8
我现在已经对其进行了测试，它似乎可以在最新版本的 ExoPlayer 上正常工作。
【讨论】：
你把这个放在哪个文件里？ @victorfau 在 build.gradle 文件中。【参考方案2】：尝试更改您的 XML 文件：
<com.google.android.exoplayer2.ui.SimpleExoPlayerView
android:id="@+id/exo_player_view"
android:focusable="true"
android:layout_
android:layout_
android:layout_below="@+id/resolution_textView"
android:layout_marginTop="2dp" />
到：
<com.google.android.exoplayer2.ui.PlayerView
android:id="@+id/exo_player_view"
android:focusable="true"
android:layout_
android:layout_
android:layout_below="@+id/resolution_textView"
android:layout_marginTop="2dp" />
然后在你的 DemoActivity 中改变：
private SimpleExoPlayerView playerView;
到：
private PlayerView playerView;
另外，请确保您的投射正确：
playerView = (PlayerView) findViewById(R.id.exo_player_view);
请注意，我使用的是 2.7.3 版本：
compile 'com.google.android.exoplayer:exoplayer:2.7.3'
【讨论】：
在更改为 playerView 后，崩溃得到修复，但发生了其他崩溃： E AndroidRuntime: Caused by: java.lang.ClassCastException: android.support.v7.widget.AppCompatSeekBar cannot be cast to com.google.android.exoplayer2.ui.TimeBar 07-11 02:39:42.313 11914 11914 E AndroidRuntime：在 com.google.android.exoplayer2.ui.PlayerControlView.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，它运行良好。怎么会？见这里：github.com/google/ExoPlayer/issues/5138。【参考方案3】：
因为我有几个模块，所以我之前将依赖项添加到 .app 模块 build.gradle。我最终通过在相应模块的 build.gradle 中添加依赖项解决了这个问题。
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'
【讨论】：
【参考方案4】：将 compileOptions 粘贴到 android 范围内，如下所示：
android
compileOptions
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
【讨论】：
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