Add CommonBaseAdapter

Add CommonBaseAdapter

app/src/main/java/com/balckhao/blackhaoutil/base/CommonBaseAdapter.java

+package com.balckhao.blackhaoutil.base;
+
+import android.annotation.IdRes;
+import android.content.Context;
+import android.util.SparseArray;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+
+import java.util.List;
+
+/**
+ * Author ： BlackHao
+ * Time : 2018/9/4 14:11
+ * Description : ListView/GridView BaseAdapter
+ */
+public abstract class CommonBaseAdapter<T> extends BaseAdapter {
+
+    private List<T> list;
+    private Context context;
+
+    public CommonBaseAdapter(List<T> list, Context context) {
+        this.list = list;
+        this.context = context;
+    }
+
+    @Override
+    public int getCount() {
+        return list == null ? 0 : list.size();
+    }
+
+    @Override
+    public Object getItem(int position) {
+        return list.get(position);
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        ViewHolder viewHolder;
+        if (convertView == null) {
+            convertView = View.inflate(context, getLayoutResId(), null);
+            viewHolder = new ViewHolder();
+            //将控件与 ViewHolder 绑定
+            int[] viewIdArray = bindView();
+            for (int aViewIdArray : viewIdArray) {
+                viewHolder.bindViewById(convertView, aViewIdArray);
+            }
+            convertView.setTag(viewHolder);
+        } else {
+            viewHolder = (ViewHolder) convertView.getTag();
+        }
+        initData(viewHolder, list.get(position), position);
+        return convertView;
+    }
+
+    /**
+     * 获取 layout 文件
+     *
+     * @return layout 文件 ID
+     */
+    protected abstract int getLayoutResId();
+
+    /**
+     * 将控件与 ViewHolder 绑定
+     *
+     * @return 需要绑定的控件 ID 数组
+     */
+    protected abstract int[] bindView();
+
+    /**
+     * 绑定显示数据,增加回调监听等操作
+     *
+     * @param holder   ViewHolder
+     * @param position 对应的位置
+     * @param t        list.get(position)数据
+     */
+    protected abstract void initData(ViewHolder holder, T t, int position);
+
+    public class ViewHolder {
+        private SparseArray<View> viewSparseArray;
+
+        ViewHolder() {
+            this.viewSparseArray = new SparseArray<>();
+        }
+
+        /**
+         * 通过 id获取 View
+         *
+         * @param id  View ID
+         * @param <E> View 类型
+         * @return 对应的 View
+         */
+        @SuppressWarnings("unchecked")
+        public <E extends View> E getViewById(@IdRes int id) {
+            return (E) viewSparseArray.get(id);
+        }
+
+        /**
+         * 通过 id 获取 View并绑定到 ViewHolder
+         *
+         * @param view 布局文件 View
+         * @param id   View ID
+         */
+        public void bindViewById(View view, @IdRes int id) {
+            viewSparseArray.put(id, view.findViewById(id));
+        }
+
+    }
+
+}

app/src/main/java/com/balckhao/blackhaoutil/base/TestActivity.java

@@ -27,6 +27,7 @@ public class TestActivity extends BaseActivity {
     protected void initUI() {
         setContentView(R.layout.activity_base_test);
         ButterKnife.bind(this);
+        //replaceFragment
         replaceFragment(R.id.frame_1, new TestFragment());
         replaceFragment(R.id.frame_2, new TestFragment());
     }

app/src/main/java/com/balckhao/blackhaoutil/base/TestAdapter.java

+package com.balckhao.blackhaoutil.base;
+
+import android.content.Context;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.balckhao.blackhaoutil.R;
+
+import java.util.List;
+
+/**
+ * Author ： BlackHao
+ * Time : 2018/9/4 14:58
+ * Description :
+ */
+public class TestAdapter extends CommonBaseAdapter<String> {
+
+    public TestAdapter(List<String> list, Context context) {
+        super(list, context);
+    }
+
+    @Override
+    protected int getLayoutResId() {
+        return R.layout.adapter_test;
+    }
+
+    @Override
+    protected int[] bindView() {
+        return new int[]{R.id.test_iv, R.id.test_tv};
+    }
+
+    @Override
+    protected void initData(ViewHolder holder, String s, int position) {
+        TextView tv = holder.getViewById(R.id.test_tv);
+        ImageView iv = holder.getViewById(R.id.test_iv);
+        tv.setText("Position:" + position + "  Content : " + s);
+        if (s.endsWith("pdf")) {
+            iv.setBackgroundResource(R.drawable.pdf);
+        } else if (s.endsWith("ppt")){
+            iv.setBackgroundResource(R.drawable.ppt);
+        }else {
+            iv.setBackgroundResource(R.drawable.unkown_file);
+        }
+    }
+}

app/src/main/java/com/balckhao/blackhaoutil/base/TestFragment.java

@@ -2,9 +2,12 @@ package com.balckhao.blackhaoutil.base;
 
 import android.view.View;
 import android.widget.ImageView;
+import android.widget.ListView;
 
 import com.balckhao.blackhaoutil.R;
 
+import java.util.ArrayList;
+
 import butterknife.Bind;
 import butterknife.ButterKnife;
 
@@ -18,6 +21,8 @@ public class TestFragment extends BaseFragment {
 
     @Bind(R.id.iv_1)
     ImageView iv1;
+    @Bind(R.id.lv_test)
+    ListView lvTest;
 
     @Override
     protected int initLayoutRes() {
@@ -32,6 +37,17 @@ public class TestFragment extends BaseFragment {
 
     @Override
     protected void initData() {
+        ArrayList<String> arrayList = new ArrayList<>();
+        arrayList.add("Hello World, Android.ppt");
+        arrayList.add("Hello World, Java.pdf");
+        arrayList.add("Hello World, JS.pdf");
+        arrayList.add("Hello World, C.ppt");
+        arrayList.add("Hello World, C++");
+        arrayList.add("Hello World, C#.pdf");
+        arrayList.add("Hello World, Python.ppt");
+        arrayList.add("Hello World, PHP");
+        TestAdapter testAdapter = new TestAdapter(arrayList, getContext());
+        lvTest.setAdapter(testAdapter);
     }
 
     @Override
@@ -44,4 +60,5 @@ public class TestFragment extends BaseFragment {
         super.onDestroyView();
         ButterKnife.unbind(this);
     }
+
 }

app/src/main/res/layout/activity_base_test.xml

@@ -14,7 +14,7 @@
     <FrameLayout
         android:id="@+id/frame_1"
         android:layout_width="match_parent"
-        android:layout_height="50dp"
+        android:layout_height="500dp"
         android:layout_marginTop="10dp" />
 
     <!--分割线-->
@@ -26,7 +26,7 @@
     <FrameLayout
         android:id="@+id/frame_2"
         android:layout_width="match_parent"
-        android:layout_height="50dp"
+        android:layout_height="500dp"
         android:layout_marginTop="10dp" />
 
 

app/src/main/res/layout/adapter_test.xml

+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ImageView
+        android:id="@+id/test_iv"
+        android:layout_width="30dp"
+        android:layout_height="30dp"
+        android:layout_centerVertical="true"
+        android:layout_marginLeft="20dp"
+        android:layout_marginStart="20dp"
+        android:contentDescription="@null" />
+
+    <TextView
+        android:id="@+id/test_tv"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:layout_centerVertical="true"
+        android:layout_marginLeft="70dp"
+        android:layout_marginStart="70dp"
+        android:gravity="center" />
+</RelativeLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_one.xml

@@ -7,7 +7,14 @@
         android:id="@+id/iv_1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_centerInParent="true"
+        android:layout_centerHorizontal="true"
         android:contentDescription="@null" />
 
+    <ListView
+        android:id="@+id/lv_test"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_below="@id/iv_1"
+        android:layout_marginTop="10dp" />
+
 </RelativeLayout>
\ No newline at end of file