回复短信：“compose_mode”= true vs false有什么区别？

Question

使用下面的代码或类似代码，“compose_mode”标志在回复短信方面做了什么？

示例代码：

Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("smsto:" + sendTo));
intent.putExtra("compose_mode", true); //What does this line do? What if it was "false"?
startActivity(intent);

Answer 1

从未尝试过，但发现：

// Exit the app once the SMS is sent
    intent.putExtra("compose_mode", true);

http://code.google.com/p/zxing/source/browse/trunk/android/src/com/google/zxing/client/android/result/ResultHandler.java?r=635