[英]Android - Call Method With A Button From XML
I've got an app based on Sliding Tabs
layout.我有一个基于
Sliding Tabs
卡布局的应用程序。 I want to call the addMedicine
method in the PageFragment
class from an XML layout with a Button
.我想从带有
Button
的 XML 布局调用PageFragment
类中的addMedicine
方法。 The issue is that i cannot assign the method to the Button
onClick
event.问题是我无法将方法分配给
Button
onClick
事件。
Here's the PageFragment
class:这是
PageFragment
类:
public class PageFragment extends Fragment {
public static final String ARG_PAGE = "ARG_PAGE";
private int mPage;
// TEMP VARIABLES //
ListView ItemsLst;
String[] Items = {"Medicine 1", "Medicine 2", "Medicine 3"};
TextView output;
EditText nameFld;
EditText formatFld;
EditText amountFld;
EditText exp_dateFld;
EditText timeFld;
DBManager dbAdapt = new DBManager(getActivity());
public static PageFragment newInstance(int page) {
Bundle args = new Bundle();
args.putInt(ARG_PAGE, page);
PageFragment fragment = new PageFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPage = getArguments().getInt(ARG_PAGE);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = null;
switch(mPage)
{
case 1:
view = inflater.inflate(R.layout.layout_sqltest, container, false);
nameFld = (EditText) view.findViewById(R.id.nameFld);
formatFld = (EditText) view.findViewById(R.id.formatFld);
amountFld = (EditText) view.findViewById(R.id.amountFld);
exp_dateFld = (EditText) view.findViewById(R.id.exp_dateFld);
timeFld = (EditText) view.findViewById(R.id.timeFld);
return view;
case 2:
view = inflater.inflate(R.layout.layout_settings, container, false);
return view;
case 3:
view = inflater.inflate(R.layout.layout_info, container, false);
return view;
}
return view;
}
public void addMedicine() // The method i want to call
{
String name = nameFld.getText().toString();
String format = formatFld.getText().toString();
int amount = Integer.parseInt(amountFld.getText().toString());
String exp_date = exp_dateFld.getText().toString();
String time = timeFld.getText().toString();
long id = dbAdapt.addMedicine(name, format, amount, exp_date, time);
}
}
And here is the layout_sqltest
XML file:这是
layout_sqltest
XML 文件:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Name"
android:id="@+id/nameLbl"
android:layout_gravity="center_horizontal" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/nameFld"
android:layout_gravity="center_horizontal"
android:inputType="text" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Format"
android:id="@+id/formatLbl"
android:layout_gravity="center_horizontal" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/formatFld"
android:layout_gravity="center_horizontal"
android:inputType="text" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Amount"
android:id="@+id/amountLbl"
android:layout_gravity="center_horizontal" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/amountFld"
android:layout_gravity="center_horizontal"
android:inputType="text" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expiration Date"
android:id="@+id/exp_dateLbl"
android:layout_gravity="center_horizontal" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/exp_dateFld"
android:layout_gravity="center_horizontal"
android:inputType="text" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Time"
android:id="@+id/timeLbl"
android:layout_gravity="center_horizontal" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/timeFld"
android:layout_gravity="center_horizontal"
android:inputType="text" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add Medicine"
android:id="@+id/addMedicineBtn"
android:layout_gravity="center_horizontal" />
</LinearLayout>
The addMedicineBtn
is the button i want to call the method with. addMedicineBtn
是我想用来调用该方法的按钮。 Someone can help me?有人可以帮助我吗? I really need that!
我真的需要那个! Thank you in advance!
先感谢您!
EDIT: I tried giving to addMedicine
method the View
param, but it still doesn't appear in the available methods for the addMedicineBtn
in the onClick
properties (I'm using Android Studio).编辑:我尝试为
addMedicine
方法提供View
参数,但它仍然没有出现在onClick
属性中addMedicineBtn
的可用方法中(我使用的是 Android Studio)。
尝试使用 onClickListener
view.findViewById(R.id.addMedicineBtn).setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View v) { addMedicine(); } });
You must add tools:context="PageFragment"
line to the container ( LinearLayout
) of PagerFragment
's layout file ( layout_sqltest
).您必须将
tools:context="PageFragment"
行添加到PagerFragment
布局文件 ( layout_sqltest
) 的容器 ( LinearLayout
) 中。 Then onClick()
method will find methods in PagerFragment
class.然后
onClick()
方法会在PagerFragment
类中找到方法。
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