80,352
社区成员
发帖
与我相关
我的任务
分享
class ListViewAdapter extends BaseAdapter {
private int resourceid;
private Context context;
List<ListviewBean> data;
@Override
public View getView(int position, View view, ViewGroup parent) {
ListviewBean listviewBean = (ListviewBean) getItem(position);
Packages packages = null;
if (null == view) {
packages = new Packages();
//获得组件,实例化组件
view = LayoutInflater.from(context).inflate(resourceid, parent, false);
packages.list_a = (EditText) view.findViewById(R.id.list_a);
packages.list_b = (EditText) view.findViewById(R.id.list_b);
packages.list_c = (EditText) view.findViewById(R.id.list_c);
view.setTag(packages);
} else {
packages = (Packages) view.getTag();
}
isEmpty(listviewBean.getA(), packages.list_a);
isEmpty(listviewBean.getB(), packages.list_b);
isEmpty(listviewBean.getC(), packages.list_c);
//添加了焦点事件
packages.list_b.setOnFocusChangeListener(new OncFocusChangeListener());
return view;
}
public void isEmpty(String string, EditText editText) {
if (!TextUtils.isEmpty(string)) {
editText.setText(string);
} else {
editText.setText("");
}
}
//绑定焦点事件
class OncFocusChangeListener implements View.OnFocusChangeListener {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (!hasFocus) {
Toast.makeText(context, "失去焦点", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "获得焦点", Toast.LENGTH_SHORT).show();
}
}
}
}
public class MainActivity extends AppCompatActivity {
private ListViewAdapter listViewAdapter;
List<ListviewBean> list;
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.main);
list = getList();
listViewAdapter = new ListViewAdapter(this, R.layout.listview, list);
listView.setAdapter(listViewAdapter);
}
//获取初始参数
public List<ListviewBean> getList() {
List<ListviewBean> list = new ArrayList<>();
ListviewBean listviewBean = new ListviewBean("1", "1", "1");
list.add(listviewBean);
return list;
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<ListView
android:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:descendantFocusability="beforeDescendants"></ListView>
</LinearLayout>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="40dp"
android:gravity="center"
android:orientation="horizontal">
<EditText
android:id="@+id/list_a"
android:layout_width="120dp"
android:layout_height="80dp"
android:layout_margin="5dp"
android:gravity="center"
android:maxEms="16"
android:shadowColor="#465d45"
android:textColor="#000" />
<EditText
android:id="@+id/list_b"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_margin="5dp"
android:gravity="center"
android:maxEms="4"
android:numeric="integer"
android:textColor="#000" />
<EditText
android:id="@+id/list_c"
android:layout_width="120dp"
android:layout_height="80dp"
android:layout_margin="5dp"
android:editable="false"
android:gravity="center"
android:maxEms="16"
android:textColor="#000" />
</LinearLayout>
项目地址:https://github.com/liust15/Question