通过 WhatsApp 发送消息

由于我发现了一些较旧的帖子，表明 Whatsapp 不支持此功能，我想知道是否发生了变化，以及是否有办法打开与我通过意图发送的号码进行 Whatsapp“聊天”？

UPDATE请参阅https://faq.whatsapp.com/en/android/26000030/?category=5245251 https://faq.whatsapp.com/en/android/26000030/?category=5245251

WhatsApp 的“点击聊天”功能可让您与以下人士开始聊天 某人的电话号码未保存在您的手机中 地址簿。只要您知道此人的电话号码，您就可以 创建一个允许您与他们开始聊天的链接。

Use: https://wa.me/15551234567 https://wa.me/15551234567

不要使用：https://wa.me/+001-(555)1234567 https://wa.me/+001-(555)1234567

例子：https://wa.me/15551234567?text=我%20感兴趣%20in%20你的%20汽车%20for%20sale https://wa.me/15551234567?text=I%27m%20interested%20in%20your%20car%20for%20sale

原答案这是解决方案

public void onClickWhatsApp(View view) {
    
    PackageManager pm=getPackageManager();
    try {

        Intent waIntent = new Intent(Intent.ACTION_SEND);
        waIntent.setType("text/plain");
        String text = "YOUR TEXT HERE";

        PackageInfo info=pm.getPackageInfo("com.whatsapp", PackageManager.GET_META_DATA);
        //Check if package exists or not. If not then code 
        //in catch block will be called
        waIntent.setPackage("com.whatsapp");

        waIntent.putExtra(Intent.EXTRA_TEXT, text);
        startActivity(Intent.createChooser(waIntent, "Share with"));
        
   } catch (NameNotFoundException e) {
        Toast.makeText(this, "WhatsApp not Installed", Toast.LENGTH_SHORT)
                .show();
   }  

}

另请参阅http://www.whatsapp.com/faq/en/android/28000012 http://www.whatsapp.com/faq/en/android/28000012