Android - 使用动态文本字段使用选择器对话框共享

Question

如果用户选择Twitter，我想发送缩写文本字段（由于字符限制）。从这个SO后 - Branching the Android Share Intent extras depending on which method they choose to share - 我了解到我可以实现有针对性的意图。但是，当我使用下面的代码时，许多应用程序显示为“Android系统”，Twitter并未显示在对话框中。我甚至删除了试图抓住Twitter的if区块，但它仍然没有出现。

List<Intent> targetedShareIntents = new ArrayList<Intent>(); 
    Intent sharingIntent = new Intent(Intent.ACTION_SEND); 
    sharingIntent.setType("text/plain"); 

    PackageManager pm = rootView.getContext().getPackageManager(); 
    List<ResolveInfo> activityList = pm.queryIntentActivities(sharingIntent, 0); 
    for(final ResolveInfo app : activityList){ 

     String packageName = app.activityInfo.packageName; 
     Intent targetedShareIntent = new Intent(Intent.ACTION_SEND); 
     targetedShareIntent.setType("text/plain"); 

     if(TextUtils.equals(packageName, TWITTER_PACKAGE_NAME)){ 
      targetedShareIntent.putExtra(Intent.EXTRA_TEXT, getTextToShare(data, "Twitter")); 
     } else { 
      targetedShareIntent.putExtra(Intent.EXTRA_SUBJECT, data.getTitle()); 
      targetedShareIntent.putExtra(Intent.EXTRA_TEXT, getTextToShare(data)); 
     } 

     targetedShareIntent.setPackage(packageName); 
     targetedShareIntents.add(targetedShareIntent); 

    } 

    Intent chooserIntent = Intent.createChooser(targetedShareIntents.remove(targetedShareIntents.size() - 1), "Share this story"); 
    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[]{})); 
    startActivity(chooserIntent); 

我真的不知道发生了什么事情有以下几点：

Intent.createChooser(targetedShareIntents.remove(targetedShareIntents.size() - 1), "Share this story"); 
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[]{})); 

在SO后，使用targetedShareIntents.remove(0)虽然targetedShareIntents.remove(targetedShareIntents.size() - 1)提议作为一种更重用的解决方案。任何帮助或解释这是非常感谢。

Answer 1

我觉得TextUtils.equals(packageName, TWITTER_PACKAGE_NAME)不能准确地找到com.twitter.android包名，所以你需要尝试下面的代码匹配Twitter的包名

if(packageName.toLowerCase().startsWith("com.twitter")){ 
     targetedShareIntent.putExtra(Intent.EXTRA_TEXT, getTextToShare(data, "Twitter")); 
    } else { 
     targetedShareIntent.putExtra(Intent.EXTRA_SUBJECT, data.getTitle()); 
     targetedShareIntent.putExtra(Intent.EXTRA_TEXT, getTextToShare(data)); 
    }