在Android中实现分享有一种比较方便的方式，调用系统的分享面板来分享我们的应用。最基本的实现如下：
public Intent getShareIntent(){
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_TEXT, "这是测试分享面板, http://www.baidu.comss");
intent.setType("text/plain");
return intent;
}还有一种是实现在ActionBar上添加分享列表，实现代码如下：<?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, "这是测试分享面板, http://www.baidu.comss");
intent.setType("text/plain");
return intent;
}系统默认会为我们找出所有支持seteType中类型的应用，同样我们可以实现自定义分享的平台。 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;
//在这里可以添加相应的平台，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，比如每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。我们可以给上面的方法添加参数，让只能分享到一个平台就可以解决这个问题，这样我们就可以自定义一个分享面板，来添加我们想要的应用，代码如下： 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"));
}
}原文地址：http://blog.csdn.net/dawanganban/article/details/41210859
