我有一个错误" FloatingActionButton无法转换为android"在片段中
这是我的按钮:
<android.support.design.widget.FloatingActionButton
android:id="@+id/kirim"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
app:srcCompat="@android:drawable/ic_menu_upload" />
这是调用按钮的代码
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_chat, container, false);
kirim = (Button) rootView.findViewById(R.id.kirim);
kirim.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
simpan();
}
});
return rootView;
}
答案 0 :(得分:4)
FloatingActionButton无法强制转换为Button。替换此行:
kirim = (Button) rootView.findViewById(R.id.kirim);
使用这行代码:
kirim = (FloatingActionButton) rootView.findViewById(R.id.kirim);
答案 1 :(得分:0)
您将FloatingActionButton
投射到Button
,这将导致错误,因为FloatingActionButton
不会扩展Button。按照错误说明
kirim = (FloatingActionButton) rootView.findViewById(R.id.kirim);