edittext触摸弹出soft input时，光标消失的解决办法

问题是，有些界面我们用了自定义的输入键盘，这时editText就可以通过setInputMethod(InputType.TYPE_NULL)来解决。

这时光标就不显示了，而且只能从末尾进行输入。

解决办法为添加如下代码

First part (in onCreate):
mText.setInputType(InputType.TYPE_NULL);
if (android.os.Build.VERSION.SDK_INT >= 11 /*android.os.Build.VERSION_CODES.HONEYCOMB*/) {
	// this fakes the TextView (which actually handles cursor drawing)
	// into drawing the cursor even though you've disabled soft input
	// with TYPE_NULL
	mText.setRawInputType(InputType.TYPE_CLASS_TEXT);
}


In addition, android:textIsSelectable needs to be set to true (or set in onCreate) and the EditText must not be focused on initialization.  If your EditText is the first focusable View (which it was in my case), you can work around this by putting this just above it:
<LinearLayout
  android:layout_width="0px"
  android:layout_height="0px"
  android:focusable="true"
  android:focusableInTouchMode="true" >
    <requestFocus />
</LinearLayout>