尝试使用 setOnFocusChangeListener
mMessageBox.setOnFocusChangeListener(new OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
// TODO Auto-generated method stub
}
});
但是当我在 onCreate 函数中使用这个函数时,eclipse 给出了错误
Multiple markers at this line
- The method setOnFocusChangeListener(View.OnFocusChangeListener) in the type View is not applicable for the arguments (new
OnFocusChangeListener(){})
- OnFocusChangeListener cannot be resolved to a type
是因为我在清单文件中使用的最小 sdk 吗?我在清单文件中的 sdk 选项是
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="17" />