国家在Android电子

Question

不是空的EditText我用这个selector我EditText：

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
    <item android:state_focused="true" android:drawable="@drawable/mostatil" /><!-- user tap on edit text --> 
    <item android:state_focused="false" android:drawable="@drawable/mostatil50" /><!-- user didn't tap or tap another edit text --> 
    <!-- state for not empty edit text --> 
</selector> 

是否有EditText显示EditText任何状态不为空（用户写了一些东西）？

Answer 1

/Just use the below code Snippet/ 

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 

    <item android:drawable="@drawable/mostatil50" android:state_pressed="true" /> 
    <item android:drawable="@drawable/mostatil" android:state_focused="true" /> 
    <item android:drawable="@drawable/mostatil" /> 

</selector> 

Answer 2

你可以检查的EditText是使用下面的代码空：

EditText edittext = (EditText)findViewById(R.id.edittext); 
edittext = edittext.getText().toString(); 
if (edittext.matches("")) { 
    //do something here 
} 
else { 
    //do something else 
}