我正在尝试在OnFocusChangeListener上实现EditText。问题是我遇到此错误
“ FacilityScreen”类必须声明为抽象或实现
抽象方法'onFocusChange（View，boolean）'在
'OnFocusChangeListener'
即使方法onFocusChange已在OnFocusChangeListener中实现。
这是我的代码
public class FacilityScreen extends AppCompatActivity implements AdapterView.OnItemSelectedListener,View.OnFocusChangeListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_facilty_screen);
EditText editText = (EditText) findViewById(R.id.enter_location);
editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View view, boolean hasfocus) {
if(hasfocus){
//do something
}
}
});
}
}
我怎么了？
最佳答案
您需要在活动中使用@Override public void onFocusChange()方法
比这样使用editText.setOnFocusChangeListener(this)
检查这个例子
public class FacilityScreen extends AppCompatActivity implements View.OnFocusChangeListener{
EditText editText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_facilty_screen);
editText = (EditText) findViewById(R.id.enter_location);
editText.setOnFocusChangeListener(this);
}
@Override
public void onFocusChange(View view, boolean b) {
if(view==editText){
// perfom your action here
}
}
}