0

所以我对列出 android 和整个 android 中的视图也很陌生。我目前面临的问题是我在列表视图的每个项目上都有一个切换按钮，此切换根据从服务器读取的内容更改为打开或关闭。

现在我的问题是，我不知道如何甚至从哪里开始使每个列表视图项的切换按钮可点击，然后发送按钮的新状态和设备 ID（想法就是会打开或关闭灯）

我将在下面发布我的代码。如果您需要其他任何内容，请询问。我已经坚持了大约一个星期，这让我发疯了！

这是我的主要活动，它将项目的 JSONarray 拉入视图

package mmu.tom.linkedviewproject;

import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ListView;

import org.json.JSONArray;

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "ShowDevice";
    private ListView GetAllDevicesListView;
    private JSONArray jsonArray;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Log.i(TAG, "  OPened this");

        ImageButton button1 = (ImageButton) findViewById(R.id.image_button_new);

        button1.setOnClickListener(new View.OnClickListener() {
            Class ourClass;

            public void onClick(View v) {
                Intent i;
                i = new Intent(MainActivity.this, DeviceDetailsActivity.class);
                startActivity(i);
            }
        });
    }

    public void setListAdapter(JSONArray jsonArray) {
        this.jsonArray = jsonArray;
        this.GetAllDevicesListView.setAdapter((new GetAllDeviceListViewAdapter(jsonArray, this)));
    }

    private class GetAllDevicesTask extends AsyncTask<ApiConnector,Long,JSONArray> {
        @Override
        protected JSONArray doInBackground(ApiConnector... params) {
            // it is executed on Background thread
            return params[0].GetAllDevicesState();
        }

        @Override
        protected void onPostExecute(JSONArray jsonArray) {
         setListAdapter(jsonArray);
        }
    }
}

这是我设置和创建项目外观的地方，本质上是我的列表视图适配器。

package mmu.tom.linkedviewproject;

import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.ToggleButton;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * Created by Tom on 08/02/2016.
 */

public class GetAllDeviceListViewAdapter extends BaseAdapter {
    private JSONArray dataArray;
    private Activity activity;
    private String state;

    private static LayoutInflater inflater = null;

    public GetAllDeviceListViewAdapter(JSONArray jsonArray, Activity a) {
        this.dataArray = jsonArray;
        this.activity = a;
        inflater = (LayoutInflater) this.activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public int getCount() {
        return this.dataArray.length();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // set up the convert view if it's null
        ListCell cell;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.get_all_devices_list_view_cell,null);
            cell = new ListCell();
            cell.deviceName = (TextView) convertView.findViewById(R.id.device_name);
            cell.deviceId = (TextView) convertView.findViewById(R.id.device_id);
            cell.type = (TextView) convertView.findViewById(R.id.type);
            cell.toggleButton = (ToggleButton) convertView.findViewById(R.id.toggleButton);
            cell.typeImg = (ImageView) convertView.findViewById(R.id.device_type);
            convertView.setTag(cell);
        } else {
            cell = (ListCell) convertView.getTag();
        }

        // changes the cell data here

        try {
            JSONObject jsonObject = this.dataArray.getJSONObject(position);
            cell.deviceName.setText(jsonObject.getString("name"));
            cell.deviceId.setText(" " + jsonObject.getString("deviceID"));
            cell.type.setText(" " + jsonObject.getString("type"));

            String toggle = jsonObject.getString("currentState");
            if (toggle.equals("on")) {
                cell.toggleButton.setChecked(true);
            } else {
                cell.toggleButton.setChecked(false);
            }

            String device = jsonObject.getString("type");
            if (device.equals("Light")) {
                cell.typeImg.setImageResource(R.mipmap.ic_lights_on);
            } else if (device.equals("Lock")) {
                cell.typeImg.setImageResource(R.mipmap.ic_lock_open_black_24dp);
            }
            // remember to set the image to type in future
        } catch(JSONException e) {
            e.printStackTrace();
        }

        return convertView;
    }

    private class ListCell {
        private TextView deviceName;
        private TextView deviceId;
        private TextView type;
        private ImageView typeImg;
        private ToggleButton toggleButton;
    }
}
4

1 回答 1

0

据我了解，您正在寻找这个。 

cell.ToggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener() {

        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            if(isChecked)
            {
                //your action
            }
            else
            {
               //your action
            }
        }
    });
于 2016-03-30T11:27:06.183 回答