butterKnife注解开发框架

曾经终败给现在 2024-02-17 16:26 66阅读 0赞

java代码： 
     package com.example.administrator.butterknife;
    
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.widget.Adapter;
    import android.widget.ListView;
    import android.widget.Toast;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import butterknife.ButterKnife;
    import butterknife.InjectView;
    import butterknife.OnItemClick;
    
    public class MainActivity extends AppCompatActivity {
    
        @InjectView(R.id.lv)
        ListView listView;
        private MyAdapter myAdapter;
        private List<String> datas;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            ButterKnife.inject(this);
            initdatas();
        }
    
        private void initdatas() {
            datas = new ArrayList<>();
            datas.add("1");
            datas.add("2");
            datas.add("3");
            datas.add("4");
            datas.add("5");
            datas.add("6");
            datas.add("7");
            datas.add("8");
            datas.add("9");
            datas.add("10");
            datas.add("11");
            datas.add("12");
            datas.add("13");
            datas.add("14");
            myAdapter = new MyAdapter(this, datas);
            listView.setAdapter(myAdapter);
        }
    
        /**
         * 设置listview   item的点击事件
         * 不要加分号
         */
    
        @OnItemClick(R.id.lv)
        public void pointitem(int position) {
            Toast.makeText(this, position + 1 + "", Toast.LENGTH_LONG).show();
        }
    }
     
     java代码对应的xml： <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context=".MainActivity">
    
        <ListView
            android:id="@+id/lv"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
    
        </ListView>
    
    </RelativeLayout>
     
    适配器： package com.example.administrator.butterknife;
    
    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 java.util.List;
    
    import butterknife.ButterKnife;
    import butterknife.InjectView;
    
    /**
     * Created by Administrator on 2015/11/6.
     */
    public class MyAdapter extends BaseAdapter {
        private MainActivity mcontext;
        private List<String> datas;
    
        public MyAdapter(MainActivity mcontext, List<String> datas) {
            this.mcontext = mcontext;
            this.datas = datas;
        }
    
        @Override
        public int getCount() {
            return datas.size();
        }
    
        @Override
        public Object getItem(int position) {
            return datas.get(position);
        }
    
        @Override
        public long getItemId(int position) {
            return position;
        }
    
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder viewHolder = null;
            if (convertView == null) {
                convertView = View.inflate(mcontext, R.layout.item, null);
                viewHolder = new ViewHolder(convertView);
                convertView.setTag(viewHolder);
            } else {
                viewHolder = (ViewHolder) convertView.getTag();
            }
            /**
             * 给属性赋值写在getview方法中
             */
            final String s = datas.get(position);
            viewHolder.textView.setText(s);
            viewHolder.btn.setText("按钮" + s);
            viewHolder.btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Toast.makeText(mcontext, "点击了按钮btn" + s, Toast.LENGTH_SHORT).show();
                }
            });
    
            return convertView;
        }
    
        static class ViewHolder {
            /**
             * 依赖注入写在viewholder中
             */
            @InjectView(R.id.item_tv)
            TextView textView;
            @InjectView(R.id.item_btn)
            Button btn;
    
            public ViewHolder(View view) {
                ButterKnife.inject(this, view);
            }
        }
    
    
    }
     
     适配器子布局UI： <?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:descendantFocusability="blocksDescendants"
        android:gravity="center"
        android:orientation="horizontal">
    
        <TextView
            android:id="@+id/item_tv"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1" />
    
        <Button
            android:id="@+id/item_btn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1" />
    
    
    </LinearLayout>