EditText聚焦时隐藏hint的代码

只需让EditText设置如下的OnFocusChangeListener就能够了

private OnFocusChangeListener mOnFocusChangeListener = new OnFocusChangeListener() {
         @Override
         public void onFocusChange(View v, boolean hasFocus)
         {
             EditText textView = (EditText)v;
             String hint;
             if (hasFocus) {
                 hint = textView.getHint().toString();
                 textView.setTag(hint);
                 textView.setHint("");
             } else {
                 hint = textView.getTag().toString();
                 textView.setHint(hint);
             }
         }
     };

一进入一个页面, EditText默认就会自动获取焦点。解决之道：找一个EditText的父级控件，设置成

android:focusable="true"  
    android:focusableInTouchMode="true"