Android自定义ListView带单选按钮

时间：2017-02-19 06:21:44

标签： android listview simplecursoradapter

我在ListView中使用DialogFragment。列表从SQLite数据库填充 使用SimpleCursorAdaptor。

现在我正在使用上下文菜单从列表中选择一个项目并且一切正常，但我想使用单选按钮从列表中选择一个项目而不是上下文菜单。

DialogFragment中的代码：

package com.example.saggu.myapplication;
import android.app.DialogFragment;
import android.database.Cursor;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Created by Saggu on 1/25/2017.
 */

public class DialogSTB extends DialogFragment  implements View.OnClickListener{

    SimpleCursorAdapter simpleCursorAdapter;
    DbHendler dbHendler;
    ListView listViewStb;
    String TAG = "MyApp_DialogSTB";
    TextView stbcountUA;
    int stbcountUa;
    int custId;
    Button unAssign;
    private Cursor mCursor;
    EditText searchboxstb;



    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.dialog_stb, null);
        dbHendler = new DbHendler(this.getActivity(), null, null, 1);
        stbcountUA = (TextView) view.findViewById(R.id.totalStbsUnAssigned);
        listViewStb = (ListView) view.findViewById(R.id.stb_list_dialog);
        unAssign = (Button) view.findViewById(R.id.unassign_button);
       searchboxstb= (EditText) view.findViewById(R.id.searchboxstb);
        searchboxstb.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                displaySearchList();
            }

            @Override
            public void afterTextChanged(Editable s) {
                if (searchboxstb.getText().toString().equals("")) {
                    displaySTBList();
                }
            }
        });
        unAssign.setOnClickListener(this);

        Bundle bundle = getArguments();
        custId = bundle.getInt("CUSTID");
        registerForContextMenu(listViewStb);
        displaySTBList();
        stbcount();
        return view;
    }

    //region Create all List
    public void displaySTBList() {
        try {
            Cursor cursor = dbHendler.getUnAssignedSTBs();
            if (cursor == null) {
                Toast.makeText(getActivity(), "Cursor is Null", Toast.LENGTH_SHORT).show();
                return;
            }
            if (cursor.getCount() == 0) {
                Toast.makeText(getActivity(), "No Record Found", Toast.LENGTH_SHORT).show();
                return;
            }
            String[] columns = new String[]{
                    DbHendler.KEY_SN,
                    DbHendler.KEY_VC,
                    DbHendler.KEY_STATUS
            };
            int[] boundTo = new int[]{
                    R.id.stb_sn,
                    R.id.stb_vc,
                    R.id.stb_status
            };
            simpleCursorAdapter = new SimpleCursorAdapter(this.getActivity(),
                    R.layout.stb_list_item,
                    cursor,
                    columns,
                    boundTo,
                    0);
            listViewStb.setAdapter(simpleCursorAdapter);

        } catch (Exception ex) {
            Toast.makeText(getActivity(), ""+ex, Toast.LENGTH_SHORT).show();
        }
    }
    //endregion

    //region Create Search  List
    public void displaySearchList() {
        String searchItem = searchboxstb.getText().toString();
        try {
            Cursor cursor = dbHendler.searchSTBToList(searchItem);
            if (cursor == null) {
                //    textView4.setText("Unable to generate cursor.");
                return;
            }
            if (cursor.getCount() == 0) {
                //  textView4.setText("No Customer Found");
                return;
            } else {
                //   textView4.setText("");
                String[] columns = new String[]{
                        //DbHendler.KEY_ID,
                        DbHendler.KEY_SN,
                        DbHendler.KEY_VC,
                        DbHendler.KEY_STATUS
                        //   DbHendler.KEY_SN
                };
                int[] boundTo = new int[]{
                        //R.id.pId,
                        R.id.stb_sn,
                        R.id.stb_vc,
                        R.id.stb_status
                        //    R.id.vc_mac
                };
                simpleCursorAdapter = new SimpleCursorAdapter(this.getActivity(),
                        R.layout.stb_list_item,
                        cursor,
                        columns,
                        boundTo,
                        0);
                listViewStb.setAdapter(simpleCursorAdapter);
            }
        } catch (Exception ex) {
            Log.d(TAG,""+ex);

        }
    }


    //region context menu
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        MenuItem.OnMenuItemClickListener listener = new MenuItem.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                onContextItemSelected(item);
                return true;
            }
        };
        menu.add("Assign STB");
        for (int i = 0, n = menu.size(); i < n; i++)
            menu.getItem(i).setOnMenuItemClickListener(listener);
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        super.onContextItemSelected(item);
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
        if (item.getTitle() == "Assign STB") {
            //entry in assigned column
            int stbId = (int) info.id;
            int assigned = custId;

            if (dbHendler.getSTBID(custId) > 0) {
                Toast.makeText(getActivity(), "Already Assigned STB", Toast.LENGTH_LONG).show();
            } else {
                dbHendler.assignSTB(new STB(stbId, assigned));
                dbHendler.SetStbID(custId, stbId);
                Toast.makeText(this.getActivity(), "Now Assigned STB", Toast.LENGTH_LONG).show();
           swapRefreshCursor();

            }
        }
        return true;
    }

    @Override
    public void onClick(View v) {
        if (v.getId()==R.id.unassign_button);
        try {
            String stbSN = dbHendler.getAssignedSN(getActivity(),custId);
            dbHendler.unAssignSTB(stbSN); //from stb table
            dbHendler.unSetId(custId);    //From cust table
            Toast.makeText(getActivity(), "Unassigned cust: " + custId+" STB SN: "+stbSN, Toast.LENGTH_SHORT).show();
            displaySTBList();
            stbcount();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    //endregion
    public void swapRefreshCursor(){
        try {
            mCursor = dbHendler.getUnAssignedSTBs();
            simpleCursorAdapter.swapCursor(mCursor);
            stbcount();
        } catch (Exception e) {
            e.printStackTrace();
            Toast.makeText(getActivity(), ""+e, Toast.LENGTH_SHORT).show();
        }
    }

    public void stbcount(){
        stbcountUa= dbHendler.countSTBsUA;
        stbcountUA.setText("STBs:"+stbcountUa);
    }


}

单个项目的自定义布局：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical" android:layout_width="match_parent"
    android:padding="5dip"
    android:layout_height="60dip"
    android:clickable="true">

    <TextView
        android:text="Serial No."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:id="@+id/textView17"
        android:textSize="14sp"
        android:textAllCaps="true" />

    <TextView
        android:text="MAC/VC"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:id="@+id/textView18"
        android:textSize="14sp" />

    <TextView
        android:text="Serial No."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/stb_sn"
        android:textSize="14sp"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/textView17"
        android:layout_toEndOf="@+id/textView17"
        android:layout_marginLeft="34dp"
        android:layout_marginStart="34dp" />

    <TextView
        android:text="VC No."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/stb_vc"
        android:textSize="14sp"
        android:layout_alignParentBottom="true"
        android:layout_alignLeft="@+id/stb_sn"
        android:layout_alignStart="@+id/stb_sn" />

    <TextView
        android:text="TextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/stb_status"
        tools:text="ON/OFF"
        android:layout_alignParentBottom="true"
        android:layout_alignRight="@+id/Status"
        android:layout_alignEnd="@+id/Status" />

    <TextView
        android:text="Status"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/Status"
        android:textAllCaps="false"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/stb_sn"
        android:layout_toEndOf="@+id/stb_sn"
        android:layout_marginLeft="36dp"
        android:layout_marginStart="36dp" />

</RelativeLayout>

DialogFragment Layout 

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:weightSum="1">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="400dip"
        android:id="@+id/stb_list_dialog"
        android:layout_weight="0.74"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        />

    <TextView
        android:text="Total:"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/totalStbsUnAssigned"
        android:textSize="18sp"
        android:layout_marginLeft="40dp"
        android:layout_marginStart="40dp"
        android:layout_alignBaseline="@+id/unassign_button"
        android:layout_alignBottom="@+id/unassign_button"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <Button
        android:text="UnAssign"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/unassign_button"
        android:layout_weight="0.74"
        android:textAllCaps="false"
        android:layout_marginRight="15dp"
        android:layout_marginEnd="15dp"
        android:layout_below="@+id/stb_list_dialog"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />
</RelativeLayout>

1 个答案:

答案 0 :(得分：0)

只需修改列表视图项布局即可拥有一个单选按钮。 像这样：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical" android:layout_width="match_parent"
    android:padding="5dip"
    android:layout_height="60dip"
    android:clickable="true">

    <RadioButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:id="@+id/radio_button" />

    <TextView
        android:text="Serial No."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/radio_button"
        android:layout_toEndOf="@+id/radio_button"
        android:id="@+id/textView17"
        android:textSize="14sp"
        android:textAllCaps="true" />

    <TextView
        android:text="MAC/VC"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_toRightOf="@+id/radio_button"
        android:layout_toEndOf="@+id/radio_button"
        android:id="@+id/textView18"
        android:textSize="14sp" />

    <TextView
        android:text="Serial No."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/stb_sn"
        android:textSize="14sp"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/textView17"
        android:layout_toEndOf="@+id/textView17"
        android:layout_marginLeft="34dp"
        android:layout_marginStart="34dp" />

    <TextView
        android:text="VC No."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/stb_vc"
        android:textSize="14sp"
        android:layout_alignParentBottom="true"
        android:layout_alignLeft="@+id/stb_sn"
        android:layout_alignStart="@+id/stb_sn" />

    <TextView
        android:text="TextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/stb_status"
        tools:text="ON/OFF"
        android:layout_alignParentBottom="true"
        android:layout_alignRight="@+id/Status"
        android:layout_alignEnd="@+id/Status" />

    <TextView
        android:text="Status"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/Status"
        android:textAllCaps="false"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/stb_sn"
        android:layout_toEndOf="@+id/stb_sn"
        android:layout_marginLeft="36dp"
        android:layout_marginStart="36dp" />

</RelativeLayout>

您不需要上下文菜单。从片段代码中删除它。

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