ListView 总结

settings.gradle

@@ -1 +1 @@
-include ':app', ':systemwidgetdemo', ':customviewdemo', ':utils', ':animationdemo', ':designpattern', ':arithmetic'
+include ':app', ':systemwidgetdemo', ':customviewdemo', ':utils', ':animationdemo', ':designpattern', ':arithmetic', ':architecture'

systemwidgetdemo/src/main/AndroidManifest.xml

@@ -8,7 +8,7 @@
  android:label="@string/app_name"
  android:supportsRtl="true"
  android:theme="@style/AppTheme">
- <activity android:name=".recycleView.swiperefresh.SwipeRefreshActivity"
+ <activity android:name=".listView.ListViewActivity"
  android:theme="@style/Theme.AppCompat.Light.NoActionBar"
  >
  <intent-filter>

systemwidgetdemo/src/main/java/com/mahao/alex/systemwidgetdemo/listView/BaseAppAdapter.java

@@ -0,0 +1,119 @@
+package com.mahao.alex.systemwidgetdemo.listView;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Created by Alex_MaHao on 2016/5/17.
+ */
+public abstract class BaseAppAdapter<T> extends BaseAdapter {
+
+ /**
+ * 泛型，保存数据
+ */
+ protected List<T> datas;
+
+ /**
+ * 构造方法，子类必须实现其构造方法，并初始化数据
+ * @param datas
+ */
+ public BaseAppAdapter(List<T> datas) {
+ this.datas = datas;
+ }
+
+ @Override
+ public int getCount() {
+ return datas==null?0:datas.size();
+ }
+
+ @Override
+ public Object getItem(int position) {
+ return null;
+ }
+
+ @Override
+ public long getItemId(int position) {
+ return 0;
+ }
+
+ @Override
+ public View getView(int position, View convertView, ViewGroup parent) {
+
+ BaseViewHolder vHolder;
+
+ if(convertView==null){
+ convertView = LayoutInflater.from(parent.getContext()).inflate(getItemLayoutId(),parent,false);
+
+ vHolder = new BaseViewHolder(convertView);
+
+ convertView.setTag(vHolder);
+ }else{
+ vHolder = (BaseViewHolder) convertView.getTag();
+ }
+
+ /**
+ * 数据绑定的回调
+ */
+ bindData(vHolder,datas.get(position));
+
+ return convertView;
+ }
+
+ /**
+ * 子类实现，获取item布局文件的id
+ * @return
+ */
+ protected abstract int getItemLayoutId();
+
+ /**
+ * 子类实现，绑定数据
+ * @param vHolder 对应position的ViewHolder
+ * @param data 对应的数据绑定
+ */
+ protected abstract void bindData(BaseViewHolder vHolder,T data);
+
+
+ /**
+ * ViewHolder类
+ */
+ class BaseViewHolder{
+
+ /**
+ * 保存view，以id-view的形式
+ */
+ Map<Integer,View> mapView;
+
+ /**
+ * 根视图
+ */
+ View rootView;
+
+ public BaseViewHolder(View rootView){
+ this.rootView = rootView;
+ mapView = new HashMap<Integer,View>();
+ }
+
+ /**
+ * 通过id查找控件
+ * @param id
+ * @return
+ */
+ public View getView(Integer id){
+ View view = mapView.get(id);
+ if(view==null){
+ view = rootView.findViewById(id);
+ mapView.put(id,view);
+ }
+
+ return view;
+ }
+
+ }
+
+}

systemwidgetdemo/src/main/java/com/mahao/alex/systemwidgetdemo/listView/ListViewActivity.java

@@ -0,0 +1,50 @@
+package com.mahao.alex.systemwidgetdemo.listView;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.ListView;
+
+import com.mahao.alex.systemwidgetdemo.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ *
+ * ListView使用总结
+ * Created by Alex_MaHao on 2016/5/17.
+ */
+public class ListViewActivity extends AppCompatActivity {
+
+ private ListView mLv;
+
+ private List<String> datas = new ArrayList<>();
+
+ private SimpleBaseAdapter mAdapter;
+
+ @Override
+ protected void onCreate(@Nullable Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ setContentView(R.layout.activity_listview);
+
+ mLv = ((ListView) findViewById(R.id.listview_lv));
+
+ initDatas();
+
+ mAdapter = new SimpleBaseAdapter(datas);
+
+ mLv.setAdapter(mAdapter);
+
+ }
+
+ private void initDatas() {
+ for(int i = 0;i<20;i++){
+ datas.add("添加数据~~"+i);
+ }
+ }
+
+
+}

systemwidgetdemo/src/main/java/com/mahao/alex/systemwidgetdemo/listView/SimpleBaseAdapter.java

@@ -0,0 +1,33 @@
+package com.mahao.alex.systemwidgetdemo.listView;
+
+import android.widget.TextView;
+
+import com.mahao.alex.systemwidgetdemo.R;
+
+import java.util.List;
+
+/**
+ * 最基础的adapter
+ * Created by Alex_MaHao on 2016/5/17.
+ */
+
+public class SimpleBaseAdapter extends BaseAppAdapter<String> {
+
+ public SimpleBaseAdapter(List<String> datas) {
+ super(datas);
+ }
+
+ @Override
+ protected int getItemLayoutId() {
+ return R.layout.item_listview_sample;
+ }
+
+ @Override
+ protected void bindData(BaseViewHolder vHolder, String data) {
+
+ ((TextView) vHolder.getView(R.id.listview_sample_tv)).setText(data);
+
+ }
+
+
+}

systemwidgetdemo/src/main/res/layout/activity_listview.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="vertical" android:layout_width="match_parent"
+ android:layout_height="match_parent">
+
+ <ListView
+ android:id="@+id/listview_lv"
+ android:divider="#f00"
+ android:scrollbars="none"
+ android:listSelector="#0000"
+ android:dividerHeight="3dp"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"></ListView>
+
+
+</LinearLayout>

systemwidgetdemo/src/main/res/layout/item_listview_sample.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="horizontal" android:layout_width="wrap_content"
+ android:layout_height="wrap_content">
+ <TextView
+ android:id="@+id/listview_sample_tv"
+ android:layout_margin="10dp"
+ android:textColor="#000"
+ android:textSize="16sp"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content" />
+
+</LinearLayout>