小编mar*_*amx的帖子

我正在尝试使用新的api youtube.我按照提供的示例,但我收到错误:ERROR_CONNECTING_TO_SERVICE

我正在使用的"API密钥"是正确的(因为它在Google演示中正常工作).

进口:

import com.google.android.youtube.player.YouTubeBaseActivity;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayer.Provider;
import com.google.android.youtube.player.YouTubePlayerView;

Classe定义:

public class Track extends YouTubeBaseActivity implements YouTubePlayer.OnInitializedListener {

     private YouTubePlayerView ytpv;
     private YouTubePlayer ytp;

     public void onCreate(Bundle savedInstanceState) {
          ...

          ytpv = (YouTubePlayerView) findViewById(R.id.youtube_view);
          ytpv.initialize("my_api_key_correctly_created", this); 
     }

     public void onInitializationFailure(Provider arg0, YouTubeInitializationResult arg1) {
          Toast.makeText(this, "Initialization Fail" + arg1.toString(), Toast.LENGTH_LONG).show();
     }


     public void onInitializationSuccess(Provider arg0, YouTubePlayer arg1, boolean arg2) {
          ytp = arg1;
          Toast.makeText(this, "Initialization  Success", Toast.LENGTH_LONG).show();

          if(ytp !=null)
          {
               ytp.loadVideo("ZvvgDC_MNqI");
          }
     }
}

我究竟做错了什么？谢谢,对不起我的英文:)

我在我的应用程序中使用coredata,有3个上下文:

• __masterManagedObjectContext - >是具有NSPersistentStoreCoordinator的上下文,并将数据保存到磁盘.

• _mainManagedObjectContext - >是应用程序使用的上下文,无处不在

• dispatchContext - >在后台方法中使用的上下文,我有我的webservice访问权限和所有coredata插入/更新的东西.

我会提供一些代码来实现我的解决方案:

应用初始化代码:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions //a app começa aqui
{        
    NSPersistentStoreCoordinator *coordinator = [self newPersistentStoreCoordinator];
    __masterManagedObjectContext = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType];
    [__masterManagedObjectContext setPersistentStoreCoordinator:coordinator];

    _mainManagedObjectContext = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSMainQueueConcurrencyType];
    [_mainManagedObjectContext setUndoManager:nil];
    [_mainManagedObjectContext setParentContext:__masterManagedObjectContext];

    return YES;
}

创建新商店cordinator的方法

- (NSPersistentStoreCoordinator *)newPersistentStoreCoordinator
{
    NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"example.sqlite"];

    NSError *error = nil;
    NSPersistentStoreCoordinator *pC = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self newManagedObjectModel]];
    NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:
                             [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
                             [NSNumber …