Java 设置交换机的id
我有一个从服务器填充数据的循环视图,其中的组件是一个textView和一个开关。服务器可以返回n个数据。当我填充数据时,如何为Java 设置交换机的id,java,android,layout,Java,Android,Layout,我有一个从服务器填充数据的循环视图,其中的组件是一个textView和一个开关。服务器可以返回n个数据。当我填充数据时,如何为开关2设置唯一id,因为稍后我需要为开关设置侦听器,我的服务器实际上会返回一个唯一id,但我不确定如何将其设置为开关2,或者是否有其他参数可用于标识开关 布局 主要的 公共类lightsControl扩展了片段{ 查看我的视图; 公共静态最终字符串URL=“serverurl.com”; 私人回收站; 专用循环视图适配器; 私人物品清单; 专用交换机; @可空 @凌驾 C
开关2
设置唯一id,因为稍后我需要为开关设置侦听器,我的服务器实际上会返回一个唯一id,但我不确定如何将其设置为开关2
,或者是否有其他参数可用于标识开关
布局
主要的
公共类lightsControl扩展了片段{
查看我的视图;
公共静态最终字符串URL=“serverurl.com”;
私人回收站;
专用循环视图适配器;
私人物品清单;
专用交换机;
@可空
@凌驾
CreateView上的公共视图(布局、充气机、视图组容器、捆绑包保存状态){
myView=充气机。充气(R.layout.Lights控件,容器,错误);
recyclerView=(recyclerView)myView.findViewById(R.id.lightsView);
recyclerView.setHasFixedSize(true);
setLayoutManager(新的LinearLayoutManager(this.getActivity());
listItems=new ArrayList();
loadData();
adapter=新的populateLights_适配器(listItems,myView.getContext());
recyclerView.setAdapter(适配器);
返回myView;
}
私有void loadData(){
final ProgressDialog ProgressDialog=新建ProgressDialog(myView.getContext());
progressDialog.setMessage(“加载”);
progressDialog.show();
StringRequest StringRequest=新StringRequest(Request.Method.POST,
网址,
新的Response.Listener(){
@凌驾
公共void onResponse(字符串响应){
progressDialog.disclose();
Snackbar mysnakbar=Snackbar.make(myView,“获取数据!”,Snackbar.LENGTH\u SHORT);
mysnakbar.show();
Log.v(“数据响应”,响应);
试一试{
JSONObject JSONObject=新JSONObject(响应);
JSONArray数组=jsonObject.getJSONArray(“lightData”);
对于(int i=0;i查看此代码是否在日志中打印正确的位置。将其放入适配器类中视图保持器的构造函数中:
status.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
Log.d("Position: ", String.valueOf(getLayoutPosition()));
}
});
我不太清楚你所说的唯一id是什么意思?当你可以从某个位置知道某个项目的哪些方面时,为什么你需要一个唯一id?@pulak我如何从该位置知道?用户可以从布局中触发开/关任何开关,我如何才能知道他在没有id的情况下触发了哪个开关?请参阅我发布的答案,该答案将记录该位置当一个开关被选中或取消选中时,该选项将返回位置,现在我可以将我的所有id设置为ArrayList,因为所有位置都匹配(索引)我可以找到哪一个被点击,感谢一个关于如何在recycler view adapter类中设置点击监听器的好资源:你知道一种在页面第一次加载时不触发onCheck Listner的方法吗?因为我的应用在页面加载时触发监听器,我只希望在用户实际触摸开关时触发它。Altern当然,您也可以使用setOnClickListener()
方法来实现您想要的,而这不会导致您提到的问题。
public class populateLights_adapter extends RecyclerView.Adapter<populateLights_adapter.ViewHolder> {
private List<populate_lights> listItems;
private Context context;
public populateLights_adapter(List<populate_lights> listItems, Context context) {
this.listItems = listItems;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.addlight_items, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
populate_lights listItem = listItems.get(position);
holder.lightText.setText(listItem.getLightName());
holder.status.setChecked(listItem.getState());
}
@Override
public int getItemCount() {
return listItems.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
public TextView lightText;
public Switch status;
public ViewHolder(View itemView) {
super(itemView);
lightText = (TextView) itemView.findViewById(R.id.user_set_light_id);
status = (Switch) itemView.findViewById(R.id.switch2);
}
}
}
public class populate_lights {
private String lightName;
private boolean state;
public populate_lights(String lightName, boolean state){
this.lightName = lightName;
this.state = state;
}
public String getLightName(){
return lightName;
}
public boolean getState(){
return state;
}
}
public class lightsControl extends Fragment {
View myView;
public static final String URL = "serverurl.com";
private RecyclerView recyclerView;
private RecyclerView.Adapter adapter;
private List<populate_lights> listItems;
private Switch mySwitch;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
myView = inflater.inflate(R.layout.lightscontrol, container, false);
recyclerView = (RecyclerView) myView.findViewById(R.id.lightsView);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this.getActivity()));
listItems = new ArrayList<>();
loadData();
adapter = new populateLights_adapter(listItems, myView.getContext());
recyclerView.setAdapter(adapter);
return myView;
}
private void loadData(){
final ProgressDialog progressDialog = new ProgressDialog(myView.getContext());
progressDialog.setMessage("Loading");
progressDialog.show();
StringRequest stringRequest = new StringRequest(Request.Method.POST,
URL,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
progressDialog.dismiss();
Snackbar mySnackbar = Snackbar.make(myView, "Data Fetched!", Snackbar.LENGTH_SHORT);
mySnackbar.show();
Log.v("DATA_RESPONSE", response);
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray array = jsonObject.getJSONArray("lightData");
for(int i=0;i<array.length();i++){
JSONObject obj = array.getJSONObject(i);
Log.v("LIGHT ID ", "index=" + obj.getString("LightID"));
Log.v("Value ", "index=" + obj.getBoolean("Value"));
populate_lights popLights = new populate_lights(
obj.getString("LightID"), //unique id
obj.getBoolean("Value") //value returns true, or false
);
listItems.add(popLights);
}
adapter = new populateLights_adapter(listItems, myView.getContext());
recyclerView.setAdapter(adapter);
}
catch(Exception e){
e.printStackTrace();
}
}},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Snackbar mySnackbar = Snackbar.make(myView, "Oops, there was an error communicating with our server, try again", Snackbar.LENGTH_SHORT);
mySnackbar.show();
Log.v("LoginFormERROR", "index=" + error);
progressDialog.dismiss();
}
}
)
};
RequestQueue requestQueue = Volley.newRequestQueue(myView.getContext());
requestQueue.add(stringRequest);
}
public void showErrorAlert(){
AlertDialog.Builder builder1 = new AlertDialog.Builder(myView.getContext());
builder1.setMessage("Opps, something went wring");
builder1.setCancelable(true);
builder1.setPositiveButton(
"Main Menu",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
getActivity().onBackPressed();
}
});
AlertDialog alert11 = builder1.create();
alert11.show();
}
}
status.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
Log.d("Position: ", String.valueOf(getLayoutPosition()));
}
});