小编Ped*_*dro的帖子

在我的应用程序中,我需要显示一个或两个edittexts来收集信息(e1和e2),具体取决于用户通过radiobutton进行的选择.这是通过将edittext的可见性状态设置为GONE来完成的,并且工作正常.

我的问题是如何以编程方式为每种情况将IME_ACTION从"完成"设置为"下一步",即:

1)只有e1可见 - 将e1的IME_ACTION设置为DONE

2)e1和e2是可见的 - 将e1的IME_ACTION设置为NEXT,将e2的IME_ACTION设置为DONE.

我正在使用android:minSdkVersion ="4"和android:targetSdkVersion ="16"并在Android 2.2设备上进行测试.

这是我的布局:

<EditText
android:id="@+id/e1"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:inputType="text"
android:maxLines="1"
android:singleLine="true"
android:imeOptions="actionDone"
android:hint="@string/sh15"
android:textColor="@android:color/black"
android:textSize="@dimen/s">
</EditText>         
<EditText
android:id="@+id/e2"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:inputType="text"
android:maxLines="1"
android:singleLine="true"
android:imeOptions="actionDone"
android:hint="@string/sh16"
android:textColor="@android:color/black"
android:textSize="@dimen/s">
</EditText> 

这是我的代码:

RadioGroup r= (RadioGroup) dialog.findViewById(R.id.rg);
  r.setOnCheckedChangeListener(new OnCheckedChangeListener() 
  {
   public void onCheckedChanged(RadioGroup group, int checkedId) 
   {
    switch(checkedId)
    {
     case R.id.rb1: //show one edittext
         e1.setVisibility(View.VISIBLE);             
         e2.setVisibility(View.GONE);
         e1.setImeOptions(EditorInfo.IME_ACTION_DONE);
     break;
     case R.id.rb2: //show two edittext
         e1.setVisibility(View.VISIBLE);
         e2.setVisibility(View.VISIBLE);
         e1.setImeOptions(EditorInfo.IME_ACTION_NEXT);
         e2.setImeOptions(EditorInfo.IME_ACTION_DONE);
     break;

    }
   }
  });  

我正在将用Delphi编写的旧应用程序移植到Java中.我在使用此函数时遇到了一些麻烦,它会计算传输消息的CRC.

这是原始代码:

       if(ReceivedMessage[slot].Message[1] = $FD) and
          (ReceivedMessage[slot].MessageLength in [1..16]) and
          (ReceivedMessage[slot].Message[counter] = $FF) then
       begin
        index := 2;
        ReceivedMessage[slot].DataReady := TRUE;

        for counter := 1 to ReceivedMessage[slot].MessageLength do
        begin
          Inc(index);

          if ReceivedMessage[slot].Message[index] < $F8 then
            ReceivedMessage[slot].Data[counter] := ReceivedMessage[slot].Message[index]
          else
          if ReceivedMessage[slot].Message[index] = $F8 then
          begin
            Inc(index);

            ReceivedMessage[slot].Data[counter] := ReceivedMessage[slot].Message[index] or $F0;
          end
          else
            ReceivedMessage[slot].DataReady := FALSE;  // Invalid data
        end;

        if ReceivedMessage[slot].DataReady = TRUE then
        begin
          Inc(index);

          if ReceivedMessage[slot].Message[index] < $F8 then
            ReceivedMessage[slot].CRC := ReceivedMessage[slot].Message[index] shl 8
          else
          if ReceivedMessage[slot].Message[index] …