据我所知，StackOverflow有很多人以各种方式问这个问题，但是还没有人完全回答。
我的规范要求用户能够选择电子邮件，Twitter，Facebook或SMS，并为每个电子邮件选择自定义文本。这是我实现的方式：
public void onShareClick(View v) {
Resources resources = getResources();
Intent emailIntent = new Intent();
emailIntent.setAction(Intent.ACTION_SEND);
// Native email client doesn't currently support HTML, but it doesn't hurt to try in case they fix it
emailIntent.putExtra(Intent.EXTRA_TEXT, Html.fromHtml(resources.getString(R.string.share_email_native)));
emailIntent.putExtra(Intent.EXTRA_SUBJECT, resources.getString(R.string.share_email_subject));
emailIntent.setType("message/rfc822");
PackageManager pm = getPackageManager();
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.setType("text/plain");
Intent openInChooser = Intent.createChooser(emailIntent, resources.getString(R.string.share_chooser_text));
List<ResolveInfo> resInfo = pm.queryIntentActivities(sendIntent, 0);
List<LabeledIntent> intentList = new ArrayList<LabeledIntent>();
for (int i = 0; i < resInfo.size(); i++) {
// Extract the label, append it, and repackage it in a LabeledIntent
ResolveInfo ri = resInfo.get(i);
String packageName = ri.activityInfo.packageName;
if(packageName.contains("android.email")) {
emailIntent.setPackage(packageName);
} else if(packageName.contains("twitter") || packageName.contains("facebook") || packageName.contains("mms") || packageName.contains("android.gm")) {
Intent intent = new Intent();
intent.setComponent(new ComponentName(packageName, ri.activityInfo.name));
intent.setAction(Intent.ACTION_SEND);
intent.setType("text/plain");
if(packageName.contains("twitter")) {
intent.putExtra(Intent.EXTRA_TEXT, resources.getString(R.string.share_twitter));
} else if(packageName.contains("facebook")) {
// Warning: Facebook IGNORES our text. They say "These fields are intended for users to express themselves. Pre-filling these fields erodes the authenticity of the user voice."
// One workaround is to use the Facebook SDK to post, but that doesn't allow the user to choose how they want to share. We can also make a custom landing page, and the link
// will show the <meta content ="..."> text from that page with our link in Facebook.
intent.putExtra(Intent.EXTRA_TEXT, resources.getString(R.string.share_facebook));
} else if(packageName.contains("mms")) {
intent.putExtra(Intent.EXTRA_TEXT, resources.getString(R.string.share_sms));
} else if(packageName.contains("android.gm")) { // If Gmail shows up twice, try removing this else-if clause and the reference to "android.gm" above
intent.putExtra(Intent.EXTRA_TEXT, Html.fromHtml(resources.getString(R.string.share_email_gmail)));
intent.putExtra(Intent.EXTRA_SUBJECT, resources.getString(R.string.share_email_subject));
intent.setType("message/rfc822");
}
intentList.add(new LabeledIntent(intent, packageName, ri.loadLabel(pm), ri.icon));
}
}
// convert intentList to array
LabeledIntent[] extraIntents = intentList.toArray( new LabeledIntent[ intentList.size() ]);
openInChooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, extraIntents);
startActivity(openInChooser);
}
我在很多地方都找到了如何做这件事的方法，但是我在其他任何地方都没有看到所有这些方法。
请注意，此方法还会隐藏我不需要的所有愚蠢选项，例如通过wifi和蓝牙共享。
希望这对某人有帮助。
编辑：
在评论中，有人要求我解释这段代码在做什么。基本上，它只是ACTION_SEND为本机电子邮件客户端创建一个意图，然后将其他意图附加到选择器上。使特定于电子邮件的原始意图摆脱了所有多余的垃圾，例如wifi和蓝牙，然后我从ACTION_SEND纯文本类型的泛型中获取了我想要的其他意图，并在显示选择器之前加以坚持。
当我抓住其他意图时，我为每个意图都设置了自定义文本。
Edit2：自从我发布此消息以来已经有一段时间了，事情发生了一些变化。如果您在选项列表中两次看到gmail，请尝试按照下面@h_k的注释中的建议删除对“ android.gm”的特殊处理。
由于这个答案几乎是我所有stackoverflow信誉点的源头，因此我至少必须尝试使其保持最新状态。
