Android Fragment onClick 按钮方法 [英] Android Fragment onClick button Method

问题描述

我正在尝试在我的 onClick (View v) XML 中调用该方法，但不适用于 Fragment.这是错误.

I'm trying to invoke the method in my onClick (View v) XML, but does not work with Fragment. This is the error.

01-17 12:38:36.840: E/AndroidRuntime(4171): java.lang.IllegalStateException: 
Could not find a method insertIntoDb(View) in the activity class main.MainActivity 
for onClick handler on view class android.widget.Button with id 'btn_conferma'

Java 代码:

public void insertIntoDb(View v) {
...
} 

XML:

<Button
        android:id="@id/btn_conferma"
        style="?android:attr/borderlessButtonStyle"
        android:layout_width="0.0dip"
        android:layout_height="45dp"
        android:layout_marginLeft="2dp"
        android:layout_weight="1.0"
        android:background="@drawable/bottoni"
        android:gravity="center_horizontal|center_vertical"
        android:onClick="insertIntoDb"
        android:text="SALVA"
        android:textColor="#ffffff"
        android:textSize="16sp" />

推荐答案

你的活动必须有

public void insertIntoDb(View v) {
...
} 

不是片段.

如果您不想在活动中执行上述操作.初始化片段中的按钮并将侦听器设置为相同.

If you don't want the above in activity. initialize button in fragment and set listener to the same.

<Button
    android:id="@+id/btn_conferma" // + missing

然后

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

   View view = inflater.inflate(R.layout.fragment_rssitem_detail,
    container, false);
   Button button = (Button) view.findViewById(R.id.btn_conferma);
   button.setOnClickListener(new OnClickListener()
   {
             @Override
             public void onClick(View v)
             {
                // do something
             } 
   }); 
   return view;
}

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