Open a fragment of an activity from another activity

问题

Hi All I want to open the "Text-To-Speech output" fragment of Settings from my application. I think first I need to open the settings activity and then its fragment. I tried setting the ComponentName but it was unable to locate the activity.

Should I use FragmentManager; I couldn't find anything specific to my needs. Can somebody give me some link which might explain it well.

回答1:

You can use the following:

Intent ttsSettings = new Intent("com.android.settings.TTS_SETTINGS");
ttsSettings.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(ttsSettings);

回答2:

You are right, First You need to start the Activity than set the current Fragment in FragmentPager / Manager... Their is no such way to start some foreign fragment from your Activity that would be dangerous see that will lead to zombie fragments floating around the App (or May be I am not aware of that..)

1. You call the Activity Intent with some parameter for the Fragment name, you want to start i.e. interger, boolean etc...

     Intent intent = new Intent(this,SecondActivity.class);
     intent.putExtra("fragmentNumber",1); //for example    
     startActivity(intent);
   

2. You check the passed value inside OnCreate of the Second Acitivty and set the desired fragment on top.. inside OnCreate

    if(getIntent().getIntExtra("fragmentNumber",0)==1){
      //set the desired fragment as current fragment to fragment pager
     }
   

However, I am not getting the problem "It was unable to locate the activity." Have you entered the Activity in manifest file than what was the problem you were facing? Please post the full stack trace.

来源：https://stackoverflow.com/questions/16836420/open-a-fragment-of-an-activity-from-another-activity