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Ich folge diesem tutorial. Und das ist meine project.CastCompanion in Android Sender App
Das ist meine Hauptklasse:
package com.mac.isaac.castcompanionapp;
import android.os.Bundle;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.app.MediaRouteActionProvider;
import android.support.v7.media.MediaRouteSelector;
import android.support.v7.media.MediaRouter;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import com.google.android.gms.cast.ApplicationMetadata;
import com.google.android.gms.cast.Cast;
import com.google.android.gms.cast.CastDevice;
import com.google.android.gms.cast.CastMediaControlIntent;
import com.google.android.gms.cast.MediaInfo;
import com.google.android.gms.cast.MediaMetadata;
import com.google.android.gms.cast.MediaStatus;
import com.google.android.gms.cast.RemoteMediaPlayer;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import java.io.IOException;
public class CastActivity extends AppCompatActivity {
private Button mButton;
private MediaRouter mMediaRouter;
private MediaRouteSelector mMediaRouteSelector;
private MediaRouter.Callback mMediaRouterCallback;
private CastDevice mSelectedDevice;
private GoogleApiClient mApiClient;
private RemoteMediaPlayer mRemoteMediaPlayer;
private Cast.Listener mCastClientListener;
private boolean mWaitingForReconnect = false;
private boolean mApplicationStarted = false;
private boolean mVideoIsLoaded;
private boolean mIsPlaying;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.i("MYTAG", "onCreate()");
mButton = (Button) findViewById(R.id.button);
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!mVideoIsLoaded)
startVideo();
else
controlVideo();
}
});
initMediaRouter();
}
private void initMediaRouter() {
Log.i("MYTAG", "initMediaRouter()");
// Configure Cast device discovery
mMediaRouter = MediaRouter.getInstance(getApplicationContext());
mMediaRouteSelector = new MediaRouteSelector.Builder()
.addControlCategory(
CastMediaControlIntent.categoryForCast(getString(R.string.app_id)))
.build();
mMediaRouterCallback = new MediaRouterCallback();
}
@Override
protected void onResume() {
super.onResume();
Log.i("MYTAG", "onResume()");
// Start media router discovery
mMediaRouter.addCallback(mMediaRouteSelector,
mMediaRouterCallback,
MediaRouter.CALLBACK_FLAG_PERFORM_ACTIVE_SCAN);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
Log.i("MYTAG", "onCreateOptionsMenu()");
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.menu, menu);
MenuItem mediaRouteMenuItem = menu.findItem(R.id.media_route_menu_item);
MediaRouteActionProvider mediaRouteActionProvider = (MediaRouteActionProvider) MenuItemCompat.getActionProvider(mediaRouteMenuItem);
mediaRouteActionProvider.setRouteSelector(mMediaRouteSelector);
return true;
}
private void startVideo() {
Log.i("MYTAG", "startVideo()");
MediaMetadata mediaMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE);
mediaMetadata.putString(MediaMetadata.KEY_TITLE, getString(R.string.video_title));
MediaInfo mediaInfo = new MediaInfo.Builder(getString(R.string.video_url))
.setContentType(getString(R.string.content_type_mp4))
.setStreamType(MediaInfo.STREAM_TYPE_BUFFERED)
.setMetadata(mediaMetadata)
.build();
try {
mRemoteMediaPlayer
.load(mApiClient, mediaInfo, true)
.setResultCallback(new ResultCallback<RemoteMediaPlayer.MediaChannelResult>() {
@Override
public void onResult(RemoteMediaPlayer.MediaChannelResult mediaChannelResult) {
if(mediaChannelResult.getStatus().isSuccess()) {
mVideoIsLoaded = true;
mButton.setText(getString(R.string.pause_video));
}
}
});
} catch(Exception e) {
Log.e("MYTAG", "Error starting video "+e.getMessage());
e.printStackTrace();
}
}
private void controlVideo() {
Log.i("MYTAG", "controlVideo()");
if(mRemoteMediaPlayer == null || !mVideoIsLoaded)
return;
if(mIsPlaying) {
mRemoteMediaPlayer.pause(mApiClient);
mButton.setText(getString(R.string.resume_video));
} else {
mRemoteMediaPlayer.play(mApiClient);
mButton.setText(getString(R.string.pause_video));
}
}
private void reconnectChannels(Bundle hint) {
Log.i("MYTAG", "reconnectChannels()");
if((hint != null) && hint.getBoolean(Cast.EXTRA_APP_NO_LONGER_RUNNING)) {
//Log.e(TAG, "App is no longer running");
teardown();
} else {
try {
Cast.CastApi.setMessageReceivedCallbacks(mApiClient, mRemoteMediaPlayer.getNamespace(), mRemoteMediaPlayer);
} catch(IOException e) {
Log.e("MYTAG", "Exception while creating media channel ", e);
} catch(NullPointerException e) {
Log.e("MYTAG", "Something wasn't reinitialized for reconnectChannels");
}
}
}
private class ConnectionFailedListener implements GoogleApiClient.OnConnectionFailedListener {
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i("MYTAG", "onConnectionFailed()");
teardown();
}
}
@Override
protected void onPause() {
Log.i("MYTAG", "onPause()");
if (isFinishing()) {
// End media router discovery
mMediaRouter.removeCallback(mMediaRouterCallback);
}
super.onPause();
}
private void teardown() {
Log.i("MYTAG", "teardown()");
if(mApiClient != null) {
if(mApplicationStarted) {
try {
Cast.CastApi.stopApplication(mApiClient);
if(mRemoteMediaPlayer != null) {
Cast.CastApi.removeMessageReceivedCallbacks(mApiClient, mRemoteMediaPlayer.getNamespace());
mRemoteMediaPlayer = null;
}
} catch(IOException e) {
Log.e("MYTAG", "Exception while removing application " + e);
}
mApplicationStarted = false;
}
if(mApiClient.isConnected())
mApiClient.disconnect();
mApiClient = null;
}
mSelectedDevice = null;
mVideoIsLoaded = false;
}
private void initCastClientListener() {
mCastClientListener = new Cast.Listener() {
@Override
public void onApplicationStatusChanged() {
}
@Override
public void onVolumeChanged() {
}
@Override
public void onApplicationDisconnected(int statusCode) {
teardown();
}
};
}
private void launchReceiver() {
Log.i("MYTAG", "launchReceiver()");
Cast.CastOptions.Builder apiOptionsBuilder = Cast.CastOptions
.builder(mSelectedDevice, mCastClientListener);
ConnectionCallbacks mConnectionCallbacks = new ConnectionCallbacks();
ConnectionFailedListener mConnectionFailedListener = new ConnectionFailedListener();
mApiClient = new GoogleApiClient.Builder(CastActivity.this)
.addApi(Cast.API, apiOptionsBuilder.build())
.addConnectionCallbacks(mConnectionCallbacks)
.addOnConnectionFailedListener(mConnectionFailedListener)
.build();
mApiClient.connect();
}
private void initRemoteMediaPlayer() {
Log.i("MYTAG", "initRemoteMediaPlayer()");
mRemoteMediaPlayer = new RemoteMediaPlayer();
mRemoteMediaPlayer.setOnStatusUpdatedListener(new RemoteMediaPlayer.OnStatusUpdatedListener() {
@Override
public void onStatusUpdated() {
MediaStatus mediaStatus = mRemoteMediaPlayer.getMediaStatus();
mIsPlaying = mediaStatus.getPlayerState() == MediaStatus.PLAYER_STATE_PLAYING;
}
});
mRemoteMediaPlayer.setOnMetadataUpdatedListener(new RemoteMediaPlayer.OnMetadataUpdatedListener() {
@Override
public void onMetadataUpdated() {
Log.i("MYTAG", "onMetadataUpdated()");
}
});
}
private class MediaRouterCallback extends MediaRouter.Callback {
@Override
public void onRouteSelected(MediaRouter router, MediaRouter.RouteInfo info) {
Log.i("MYTAG", "onRouteSelected()");
initCastClientListener();
initRemoteMediaPlayer();
mSelectedDevice = CastDevice.getFromBundle(info.getExtras());
launchReceiver();
}
@Override
public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo info) {
Log.i("MYTAG", "onRouteUnselected()");
teardown();
mSelectedDevice = null;
mButton.setText(getString(R.string.play_video));
mVideoIsLoaded = false;
}
}
private class ConnectionCallbacks implements GoogleApiClient.ConnectionCallbacks {
@Override
public void onConnected(Bundle hint) {
Log.i("MYTAG", "onConnected()");
if(mWaitingForReconnect) {
mWaitingForReconnect = false;
reconnectChannels(hint);
} else {
try {
Cast.CastApi.launchApplication(mApiClient, getString(R.string.app_id), false)
.setResultCallback(
new ResultCallback<Cast.ApplicationConnectionResult>() {
@Override
public void onResult(
Cast.ApplicationConnectionResult applicationConnectionResult) {
Status status = applicationConnectionResult.getStatus();
if(status.isSuccess()) {
//Values that can be useful for storing/logic
ApplicationMetadata applicationMetadata =
applicationConnectionResult.getApplicationMetadata();
String sessionId =
applicationConnectionResult.getSessionId();
String applicationStatus =
applicationConnectionResult.getApplicationStatus();
boolean wasLaunched =
applicationConnectionResult.getWasLaunched();
mApplicationStarted = true;
reconnectChannels(null);
}
}
}
);
} catch (Exception e) {
Log.e("MYTAG", "error launching application");
e.printStackTrace();
}
}
}
@Override
public void onConnectionSuspended(int i) {
Log.i("MYTAG", "onConnectionSuspended()");
mWaitingForReconnect = true;
}
}
}
ich hier einen Fehler:
mRemoteMediaPlayer.load
Dort heißt es:
04-23 21:29:31.730 4524-4524/com.mac.isaac.castcompanionapp E/MYTAG: Error starting video Attempt to invoke virtual method 'com.google.android.gms.common.api.PendingResult com.google.android.gms.cast.RemoteMediaPlayer.load(com.google.android.gms.common.api.GoogleApiClient, com.google.android.gms.cast.MediaInfo, boolean)' on a null object reference
04-23 21:29:31.730 4524-4524/com.mac.isaac.castcompanionapp W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.common.api.PendingResult com.google.android.gms.cast.RemoteMediaPlayer.load(com.google.android.gms.common.api.GoogleApiClient, com.google.android.gms.cast.MediaInfo, boolean)' on a null object reference
04-23 21:29:31.730 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at com.mac.isaac.castcompanionapp.CastActivity.startVideo(CastActivity.java:110)
04-23 21:29:31.730 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at com.mac.isaac.castcompanionapp.CastActivity.access$100(CastActivity.java:30)
04-23 21:29:31.730 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at com.mac.isaac.castcompanionapp.CastActivity$1.onClick(CastActivity.java:57)
04-23 21:29:31.731 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at android.view.View.performClick(View.java:5204)
04-23 21:29:31.731 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at android.view.View$PerformClick.run(View.java:21153)
04-23 21:29:31.731 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at android.os.Handler.handleCallback(Handler.java:739)
04-23 21:29:31.731 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95)
04-23 21:29:31.731 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at android.os.Looper.loop(Looper.java:148)
04-23 21:29:31.731 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5417)
04-23 21:29:31.731 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at java.lang.reflect.Method.invoke(Native Method)
04-23 21:29:31.732 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
04-23 21:29:31.732 4524-4524/com.mac.isaac.castcompanionapp W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Debuggen ich diesen Fehler hätte:
public static final int APPLICATION_NOT_RUNNING Status code indicating that a requested application is not currently running. Constant Value: 2005
Also ich denke, das Problem ist in der Chromecast-Gerät und nicht meine App. Aber immer noch sieht meine App so aus, als würde man statt Video ein Lied schreiben, trotzdem passiert nichts.
Ich kann den Cast-Button auf meiner Symbolleiste sehen, ich kann ein Gerät auswählen, dann scheint es, als ob der Chromecast neu startet, nachdem er 3 Sekunden auf dem schwarzen Bildschirm war, aber wenn er mein Video nicht zeigt. Ich denke, das Problem ist in meiner App, weil ich die Informationen nicht richtig senden kann. Ich habe bereits Setup alles im Cast SDK-Konsole habe ich versucht, mit allen drei Optionen:
- Individuelle Empfänger
- Styled Media Receiver
- Remote Display Receiver
Und noch kann ich‘ Ich finde ein einzelnes Tutorial, das funktioniert (sogar das auf GitHub von Google funktioniert nicht, ich denke, es ist nicht aktualisiert). Hat jemand damit gearbeitet und eine funktionierende Probe?