Android定义自己的面板共享系统

在Android分享知道有一个更方便的方法。调用的共享面板来分享我们的应用程序的系统。主要实现例如，下面的：

	public Intent getShareIntent(){
		Intent intent = new Intent();
		intent.setAction(Intent.ACTION_SEND);
		intent.putExtra(Intent.EXTRA_TEXT, "这是測试分享面板, http://www.baidu.comss");
		intent.setType("text/plain");
		return intent;
	}

另一种是实如今ActionBar上加入分享列表，实现代码例如以下：

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/menu_item_share"
        android:showAsAction="ifRoom"
        android:title="Share"
        android:actionProviderClass="android.widget.ShareActionProvider" />
</menu> 

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.actionbar_menu, menu);
		MenuItem item = menu.findItem(R.id.menu_item_share);
		shareActionProvider = (ShareActionProvider) item.getActionProvider();
		Intent shareIntent = getShareIntent();
		shareActionProvider.setShareIntent(shareIntent);
		return true;
	}

	public Intent getShareIntent(){
		Intent intent = new Intent();
		intent.setAction(Intent.ACTION_SEND);
		intent.putExtra(Intent.EXTRA_TEXT, "这是測试分享面板, http://www.baidu.comss");
		intent.setType("text/plain");
		return intent;
	}

系统默认会为我们找出全部支持seteType中类型的应用。相同我们能够实现自己定义分享的平台。

	private void initShareIntent() {
		Intent intent = new Intent(Intent.ACTION_SEND);
		intent.setType("text/plain");
		List<ResolveInfo> resInfo = getPackageManager().queryIntentActivities(
				intent, 0);
		if (!resInfo.isEmpty()) {
			List<Intent> targetedShareIntents = new ArrayList<Intent>();
			for (ResolveInfo info : resInfo) {
				Intent targeted = new Intent(Intent.ACTION_SEND);
				targeted.setType("text/plain");
				ActivityInfo activityInfo = info.activityInfo;
				//在这里能够加入对应的平台。用 || 连接
				if (activityInfo.packageName.contains("com.tencent.mm")) {
					targeted.putExtra(Intent.EXTRA_TEXT, "分享内容");
					targeted.setPackage(activityInfo.packageName);
					targetedShareIntents.add(targeted);
				}
			}
			Intent chooserIntent = Intent.createChooser(
					targetedShareIntents.remove(0), "Select app to share");
			if (chooserIntent == null) {
				return;
			}
			chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS,
					targetedShareIntents.toArray(new Parcelable[] {}));
			try {
				startActivity(chooserIntent);
			} catch (android.content.ActivityNotFoundException ex) {
				Toast.makeText(this, "Can't find sharecomponent to share",
						Toast.LENGTH_SHORT).show();
			}
		}
	}

系统的分享面板存在一些缺陷，比方每一个手机显示的面板的样式不同，不同手机上显示的分享平台种类和数目不同，会出现一些杂乱的应用。我们能够给上面的方法加入參数，让仅仅能分享到一个平台就能够解决问题。这样我们就能够自己定义一个分享面板。来加入我们想要的应用，代码例如以下：

	private void initShareIntent(String type) {
	      boolean found = false;
	      Intent share = new Intent(android.content.Intent.ACTION_SEND);
	      share.setType("image/*");
	      // gets the list of intentsthat can be loaded.
	      List<ResolveInfo> resInfo =getPackageManager().queryIntentActivities(
	           share, 0);
	      if (!resInfo.isEmpty()) {
	        for (ResolveInfo info : resInfo) {
	           if (info.activityInfo.packageName.toLowerCase().contains(type)
	                 || info.activityInfo.name.toLowerCase().contains(type)) {
	              share.putExtra(Intent.EXTRA_SUBJECT, "subject");
	              share.putExtra(Intent.EXTRA_TEXT, "your text");

	              //share.putExtra(Intent.EXTRA_STREAM,
	              // Uri.fromFile(newFile(myPath))); // Optional, just
	              // // if you wanna
	              // // share an
	              // // image.
	              share.setPackage(info.activityInfo.packageName);
	              found = true;
	              break;
	           }
	        }
	        if (!found)
	           return;
	        startActivity(Intent.createChooser(share, "Select"));
	      }
	   }