From 6830d10b22a23fb5eb7d36521c8e9b117499ef1c Mon Sep 17 00:00:00 2001
From: caicai <cai353974361@163.com>
Date: Thu, 30 Mar 2017 22:34:21 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96viewpager=20=20=E6=8F=90?=
 =?UTF-8?q?=E9=AB=98=E6=80=A7=E8=83=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .gitignore                                    |  1 +
 .idea/gradle.xml                              |  2 +-
 .../java/fj/mtsortbutton/lib/SoreButton.java  | 64 +++++++---------
 .../lib/adapter/ViewPagerAdapter.java         | 76 ++++++++++++-------
 4 files changed, 79 insertions(+), 64 deletions(-)

diff --git a/.gitignore b/.gitignore
index 39fb081..c038cce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,5 @@
 .DS_Store
 /build
 /captures
+/idea/gradle.xml
 .externalNativeBuild
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 3cf9bfd..6afb8e2 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -5,7 +5,7 @@
       <GradleProjectSettings>
         <option name="distributionType" value="LOCAL" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleHome" value="E:\Android_install\Android Studio\gradle\gradle-2.14.1" />
+        <option name="gradleHome" value="E:\Android\android-studio\gradle\gradle-2.14.1" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/SoreButton.java b/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/SoreButton.java
index f483e5c..1a4ae08 100644
--- a/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/SoreButton.java
+++ b/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/SoreButton.java
@@ -4,7 +4,6 @@
 import android.support.v4.view.ViewPager;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
-import android.view.View;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 
@@ -26,12 +25,9 @@ public class SoreButton extends LinearLayout {
     //圆点间距
     private int distance = 10;
 
-    List<View> listSoreView = new ArrayList<>();
-    View soreView;
     private List<Integer> listView;
-
-    //接口
     private ViewControl viewControl;
+
     //设置接口
     public void setViewControl(ViewControl viewControl) {
         this.viewControl = viewControl;
@@ -53,30 +49,18 @@ public SoreButton(Context context, AttributeSet attrs) {
     }
 
     //初始化ViewPager
-    private void initViewPager(){
-        listSoreView = new ArrayList<>();
-        LayoutInflater layoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
-        int size = listView.size();
-        for (int i = 0; i < size; i++) {
-            //循环拿到传入的View
-            soreView = layoutInflater.inflate(listView.get(i), null);
-            //通过接口回掉的形式返回当前的View,实现接口后开源拿到每个View然后进行操作
-            if (viewControl!=null){
-                viewControl.setView(soreView,i);
-            }
-            //将获取到的View添加到List中
-            listSoreView.add(soreView);
-        }
+    private void initViewPager() {
         //设置viewPager的Adapter
-        viewPager.setAdapter(new ViewPagerAdapter(listSoreView));
+        viewPager.setAdapter(new ViewPagerAdapter(listView, viewControl));
         //初始化LinearLayout，加入指示器
-        initLinearLayout(viewPager, size, llIndicator);
+        initLinearLayout(viewPager, listView.size(), llIndicator);
     }
 
     /**
      * 设置指示器，设置ViewPager滑动事件监听
-     * @param viewPager --ViewPager
-     * @param pageSize --View的页数
+     *
+     * @param viewPager    --ViewPager
+     * @param pageSize     --View的页数
      * @param linearLayout --LinearLayout
      */
     private void initLinearLayout(ViewPager viewPager, int pageSize, LinearLayout linearLayout) {
@@ -96,8 +80,8 @@ private void initLinearLayout(ViewPager viewPager, int pageSize, LinearLayout li
                 image.setImageResource(RadioUnselected);
             }
             //设置宽高
-            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
-                    LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
+            LayoutParams params = new LayoutParams(
+                    LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
             params.setMargins(distance, 0, distance, 0);
             //将点添加到LinearLayout中
             linearLayout.addView(image, params);
@@ -106,9 +90,13 @@ private void initLinearLayout(ViewPager viewPager, int pageSize, LinearLayout li
         //ViewPager的滑动事件
         viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
             @Override
-            public void onPageScrollStateChanged(int arg0) {}
+            public void onPageScrollStateChanged(int arg0) {
+            }
+
             @Override
-            public void onPageScrolled(int arg0, float arg1, int arg2) {}
+            public void onPageScrolled(int arg0, float arg1, int arg2) {
+            }
+
             @Override
             public void onPageSelected(int arg0) {
                 //arg0当前ViewPager
@@ -126,39 +114,45 @@ public void onPageSelected(int arg0) {
 
     /**
      * 设置圆点距离
-     * @param distance  --距离
+     *
+     * @param distance --距离
      * @return
      */
-    public SoreButton setDistance(int distance){
+    public SoreButton setDistance(int distance) {
         this.distance = distance;
         return this;
     }
+
     /**
      * 设置指示器图片
-     * @param radioSelect       --选中图片
-     * @param radioUnselected   --未选中图片
+     *
+     * @param radioSelect     --选中图片
+     * @param radioUnselected --未选中图片
      * @return
      */
-    public SoreButton setIndicator(int radioSelect,int radioUnselected){
+    public SoreButton setIndicator(int radioSelect, int radioUnselected) {
         //选中图片
         RadioSelect = radioSelect;
         //未选中图片
         RadioUnselected = radioUnselected;
         return this;
     }
+
     /**
      * 设置view
-     * @param listView   --view
+     *
+     * @param listView --view
      * @return
      */
-    public SoreButton setView(List<Integer> listView){
+    public SoreButton setView(List<Integer> listView) {
         this.listView = listView;
         return this;
     }
+
     /**
      * 设置初始化
      */
-    public SoreButton init(){
+    public SoreButton init() {
         initViewPager();
         return this;
     }
diff --git a/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/adapter/ViewPagerAdapter.java b/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/adapter/ViewPagerAdapter.java
index 6140e99..a61627e 100644
--- a/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/adapter/ViewPagerAdapter.java
+++ b/FJMtSortButtonLib/src/main/java/fj/mtsortbutton/lib/adapter/ViewPagerAdapter.java
@@ -1,38 +1,58 @@
 package fj.mtsortbutton.lib.adapter;
 
+import android.support.annotation.NonNull;
 import android.support.v4.view.PagerAdapter;
+import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
+
+import fj.mtsortbutton.lib.Interface.ViewControl;
 
 public class ViewPagerAdapter extends PagerAdapter {
-	
-	private List<View> views = null;
-
-	public ViewPagerAdapter(List<View> views) {
-		this.views = views;
-	}
-
-	@Override
-	public int getCount() {
-		return views.size() > 0 ? views.size() : 0;
-	}
-
-	@Override
-	public boolean isViewFromObject(View view, Object object) {
-		return view == object;
-	}
-
-	@Override
-	public Object instantiateItem(ViewGroup viewGroup, int i) {
-		viewGroup.addView(views.get(i));
-		return views.get(i);
-	}
-
-	@Override
-	public void destroyItem(ViewGroup viewGroup, int i, Object object) {
-		viewGroup.removeView(views.get(i));
-	}
-	
+
+    private List<Integer> layoutArray = null;
+    private Map<Integer, View> viewMap = null;
+    //接口
+    private ViewControl viewControl;
+
+    public ViewPagerAdapter(@NonNull List<Integer> layoutArray, ViewControl viewControl) {
+        this.layoutArray = layoutArray;
+        this.viewControl = viewControl;
+
+        viewMap = new HashMap<>();
+    }
+
+    @Override
+    public int getCount() {
+        return layoutArray.size();
+    }
+
+    @Override
+    public boolean isViewFromObject(View view, Object object) {
+        return view == object;
+    }
+
+    @Override
+    public Object instantiateItem(ViewGroup viewGroup, int i) {
+        View view = viewMap.get(i);
+        if (view == null) {
+            view = LayoutInflater.from(viewGroup.getContext()).inflate(layoutArray.get(i), null);
+            if (viewControl != null) {
+                viewControl.setView(view, i);
+            }
+            viewMap.put(i, view);
+        }
+        viewGroup.addView(view, i);
+        return view;
+    }
+
+    @Override
+    public void destroyItem(ViewGroup viewGroup, int i, Object object) {
+        viewGroup.removeView(viewMap.get(i));
+    }
+
 }