问题
One Strange thing: the code is working fine while using emulator, but crashes while running building an unsigned apk.
when connected to android studio, it gives the following error:
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)
This is my xml file:
<?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>
This is my DemoActivity file: public class DemoActivity extends AppCompatActivity implements 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
回答1:
Seems it's a known issue, which the docs say you should use this (found solution here) :
compileOptions {
targetCompatibility JavaVersion.VERSION_1_8
}
I've tested it now, and it seems to work fine with newest version of ExoPlayer.
回答2:
Try changing your XML file from:
<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" />
Then in your DemoActivity change:
private SimpleExoPlayerView playerView;
to:
private PlayerView playerView;
Also, make sure that your casting is correct:
playerView = (PlayerView) findViewById(R.id.exo_player_view);
Note that I'm using version 2.7.3:
compile 'com.google.android.exoplayer:exoplayer:2.7.3'
来源：https://stackoverflow.com/questions/49533046/error-inflating-class-com-google-android-exoplayer2-ui-simpleexoplayerview