mInfo = (EditText) findViewById(R.id.fabu_info);
mInfo.setOnFocusChangeListener(
new OnFocusChangeListener() {
    
public void onFocusChange(View v, boolean hasFocus) {
        EditText _v
=(EditText)v;
        
if (!hasFocus) {// 失去焦点
            _v.setHint(_v.getTag().toString());
        } 
else {
            String hint
=_v.getHint().toString();
            _v.setTag(hint);
            _v.setHint(
"");
        }
    }
});

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