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私はこれに続きますtutorialです。これは私のprojectです。Android Sender AppのCastCompanion
これは私のメインクラスです：
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;
}
}
}
私はここでエラーが出ます：
mRemoteMediaPlayer.load
それは言う：
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)
デバッグ、私はこのエラーを得た：
public static final int APPLICATION_NOT_RUNNING Status code indicating that a requested application is not currently running. Constant Value: 2005
私は問題がchromecastデバイスであり、私のアプリではないと思います。しかし、まだ私のアプリはビデオの代わりに歌をキャストするように見えますが、何も起こりません。
ツールバーのキャストボタンが表示され、デバイスを選択できます.3秒間黒画面になってからクロマキャストが再開されたようですが、ビデオが表示されないようです。 私は情報を正しく送信することができないので、問題は私のアプリにあると思う。 私はすでにセットアップすべてがキャストSDKコンソールで、私はすべての3つのオプションを試してみました：
- カスタムレシーバー
- スタイル付きメディアレシーバー
- リモートディスプレイレシーバ
そして、まだ私ができます」 1つのチュートリアルが見つかりました（GoogleのGitHub上のものでも機能しませんが、更新されていないと思います）。 誰かがこれを使って作業しているサンプルを持っていますか？