标签：esc finally elb systems stream 适配器 cache content getc
1，适配器类实现OnClickListener
2，接着创建
public interface InnerItemOnclickListener { void itemClick(View v); } public void setOnInnerItemOnClickListener(InnerItemOnclickListener listener){ this.mListener=listener; }
3，之后在activity中实现
implements teacherCourseAdapter.InnerItemOnclickListener, AdapterView.OnItemClickListener
4，调用适配器中的方法（已经能够获取到item的下标值了，相信你进行setAdapter的时候，也就是列表渲染的时候，已经获得了list数据，你只需t_course.get(position).getName()具体的东东就ok）
@Override public void itemClick(View v) { int position; position = (Integer) v.getTag(); switch (v.getId()) { case R.id.btn_mod:{ Log.e("--修改-->", position + "======"+t_course.get(position).getName()); t_course.get(position).getName(); } break; case R.id.btn_del: Log.e("--删除-->", position + ""); break; default: break; } }
5，适配器代码
package com.example.fitness_app.MyAdapter; import android.content.Context; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import com.example.fitness_app.R; import com.example.fitness_app.bean.FitnessCourse; import java.util.List; public class teacherCourseAdapter extends BaseAdapter implements View.OnClickListener { private Context context; private List<FitnessCourse> courseList; private LayoutInflater inflater; private InnerItemOnclickListener mListener; public teacherCourseAdapter(Context context, List<FitnessCourse> courseList) { this.context = context; this.courseList = courseList; inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } @Override public int getCount() { return courseList.size(); } @Override public Object getItem(int i) { return courseList.get(i); } @Override public long getItemId(int i) { return i; } @Override public View getView(int i, View view, ViewGroup viewGroup) { InnerViewHolder innerViewHolder = new InnerViewHolder(); view = inflater.inflate(R.layout.teacher_course_item,null); innerViewHolder.delButton = view.findViewById(R.id.btn_del); innerViewHolder.modButton = view.findViewById(R.id.btn_mod); innerViewHolder.courseday = view.findViewById(R.id.tv_courseday); innerViewHolder.description = view.findViewById(R.id.tv_description); innerViewHolder.name = view.findViewById(R.id.tv_name); //给每个按钮设置监听器以及下标 view.setTag(innerViewHolder); innerViewHolder.modButton.setOnClickListener(this); innerViewHolder.delButton.setOnClickListener(this); innerViewHolder.modButton.setTag(i); innerViewHolder.delButton.setTag(i); //根据业务处理 innerViewHolder.courseday.setText(courseList.get(i).getCourseDay().toString()); innerViewHolder.description.setText(courseList.get(i).getDescription().toString()); innerViewHolder.name.setText(courseList.get(i).getName().toString()); // innerViewHolder.delButton.setOnClickListener(new View.OnClickListener() { // @Override // public void onClick(View v) { // Toast.makeText(context,"删除",Toast.LENGTH_LONG).show(); // } // }); // // innerViewHolder.modButton.setOnClickListener(new View.OnClickListener() { // @Override // public void onClick(View v) { // Log.i("修改",courseList.get(itemtag).getDescription().toString()); // } // }); return view; } @Override public void onClick(View v) { mListener.itemClick(v); } public interface InnerItemOnclickListener { void itemClick(View v); } public void setOnInnerItemOnClickListener(InnerItemOnclickListener listener){ this.mListener=listener; } class InnerViewHolder{ TextView courseday,name,description; Button modButton,delButton; } }
2，activity代码
package com.example.fitness_app.web.teacher; import android.content.Intent; import android.os.Handler; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.ListView; import com.example.fitness_app.MyAdapter.teacherCourseAdapter; import com.example.fitness_app.MyUtil.MyJson; import com.example.fitness_app.R; import com.example.fitness_app.bean.FitnessCourse; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.List; public class teacher_courseActivity extends AppCompatActivity implements teacherCourseAdapter.InnerItemOnclickListener, AdapterView.OnItemClickListener { private String tag = "courseList"; private MyJson myJson = null; private String baseurl = "http://192.168.1.4:7777/"; private String teacherId = null; private List<FitnessCourse> t_course = null; private Message message = new Message(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_teacher_course); // ListView view = findViewById(R.id.teacher_course_view); // view.setOnItemClickListener(new AdapterView.OnItemClickListener() { // @Override // public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // Object item = parent.getItemAtPosition(position); // FitnessCourse f = (FitnessCourse) item; // Log.i("item内容", item.toString()); // } // }); } @Override protected void onStart() { super.onStart(); Intent intent = getIntent(); teacherId = intent.getStringExtra("teacherId"); // myJson = new MyJson(); // Object o = myJson.JsonToObject(user); // Log.e(tag, "json格式--->" + o); // try { // Object id = ((JSONObject) o).get("id"); // teacherid = Long.parseLong(id.toString()); // } catch (JSONException e) { // e.printStackTrace(); // } //处理消息 final Handler handler=new Handler(){ public void handleMessage(Message msg){ if (msg.obj!=null){ ListView view = findViewById(R.id.teacher_course_view); teacherCourseAdapter teacherCourseAdapter = new teacherCourseAdapter(teacher_courseActivity.this, t_course); teacherCourseAdapter.setOnInnerItemOnClickListener(teacher_courseActivity.this); view.setAdapter(teacherCourseAdapter); view.setOnItemClickListener(teacher_courseActivity.this); } } }; new Thread(new Runnable() { @Override public void run() { try { HttpURLConnection connection = null; try { URL url = new URL(baseurl + "findTeacherCourseById?"+"id="+teacherId); //开启连接 connection = (HttpURLConnection) url.openConnection(); connection.setConnectTimeout(5 * 1000); connection.setReadTimeout(5 * 1000); connection.setUseCaches(true); connection.setRequestMethod("GET"); //设置请求中的媒体类型信息。 // connection.setRequestProperty("Content-Type","application/json"); // 开始连接 connection.connect(); // 判断请求是否成功 if (connection.getResponseCode() == 200) { // 获取返回的数据 InputStream is = connection.getInputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(is)); String result = reader.readLine(); myJson = new MyJson(); t_course = teacher_courseActivity.this.myJson.JsonToListTeacherCourse(result); for (int i = 0; i < t_course.size(); i++) { Log.e(tag, "Get方式请求成功，courselist--->" + t_course.get(i).getName()); } message.obj = t_course; handler.sendMessage(message); // List<FitnessCourse> courses = myJson.JsonToListTeacherCourse(t_course); // Intent intent = new Intent(); // intent.setClass(TeacherActivity.this,teacher_courseActivity.class); // intent.putExtra("t_course",result); // startActivity(intent); // JSONObject jsonObject = new JSONObject(result); // Log.e(tag, "json格式--->" + jsonObject); } else { Log.e(tag, "Get方式请求失败"); } } finally { // 关闭连接 if (connection != null) connection.disconnect(); } } catch (Exception e) { e.printStackTrace(); } } }).start(); } //没啥子用处 @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Log.e("整体item----->", position + ""); Object item = parent.getItemAtPosition(position); FitnessCourse f = (FitnessCourse) item; Log.i("item内容", item.toString()); }
//通过它获取 @Override public void itemClick(View v) { int position; position = (Integer) v.getTag(); switch (v.getId()) { case R.id.btn_mod:{ Log.e("--修改-->", position + "======"+t_course.get(position).getName()); t_course.get(position).getName(); } break; case R.id.btn_del: Log.e("--删除-->", position + ""); break; default: break; } } //添加 public void addcourse(View v){ } }
链接：https://blog.csdn.net/chaoyu168/article/details/55253877
Android中listView中的button控件获取item的值
标签：esc finally elb systems stream 适配器 cache content getc
原文地址：https://www.cnblogs.com/wskb/p/12458473.html
