从活动上下文之外调用startActivity（）需要FLAG_ACTIVITY_NEW_TASK

Question

我试图启动一个服务类中的活动。我有下面的代码：

public class SendLinkService extends Service { 

@Override 
public IBinder onBind(Intent intent) { 
    // TODO Auto-generated method stub 
    return null; 
} 

@Override 
public int onStartCommand(Intent intent, int flags, int startId) { 
    Bundle bundle = intent.getExtras(); 
    Intent shareIntent = new Intent(Intent.ACTION_SEND); 
    shareIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
    shareIntent.setType("text/plain"); 
    shareIntent.putExtra(Intent.EXTRA_TEXT, bundle.getString("URL")); 
    getApplicationContext().startActivity(Intent.createChooser(shareIntent, "Share via")); 
    return super.onStartCommand(intent, flags, startId); 
} 
} 

它详细介绍了以下onStartCommand（线除外）：

getApplicationContext().startActivity(Intent.createChooser(shareIntent, "Share via")); 

Answer 1

试试这个。

Intent shareIntent = new Intent(Intent.ACTION_SEND); 
shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
shareIntent.setType("text/plain"); 
shareIntent.putExtra(Intent.EXTRA_TEXT, bundle.getString("URL")); 
Intent new_intent = Intent.createChooser(shareIntent, "Share via"); 
new_intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
getApplicationContext().startActivity(new_intent); 

Answer 2

@hariharan answer works。但是，它也可以在第一种情况下无需设置Intent.FLAG_ACTIVITY_NEW_TASK。更准确的答案是：

Intent shareIntent = new Intent(Intent.ACTION_SEND); 
shareIntent.setType("text/plain"); 
shareIntent.putExtra(Intent.EXTRA_TEXT, bundle.getString("URL")); 
Intent new_intent = Intent.createChooser(shareIntent, "Share via"); 
new_intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
getApplicationContext().startActivity(new_intent);