[FIX] 添加pagerChangeListener

cloudist · Oct 12, 2017 · fb26891 · fb26891
1 parent ff12f94
commit fb26891
Show file tree

Hide file tree

Showing 4 changed files with 55 additions and 14 deletions.
diff --git a/app/src/main/java/cn/demo/MainActivity.java b/app/src/main/java/cn/demo/MainActivity.java
@@ -16,10 +16,12 @@
 import java.util.List;
 
 import cn.imageviewer.adapter.ViewpagerCommonAdapter;
+import cn.imageviewer.helper.OnDestroyCallback;
 import cn.imageviewer.helper.OnImageLongClickListener;
 import cn.imageviewer.helper.OnImageSingleClickListener;
 import cn.imageviewer.helper.OnLoadListener;
 import cn.imageviewer.helper.ImageLoader;
+import cn.imageviewer.helper.OnPageChangeListener;
 import cn.imageviewer.view.ImageViewer;
 import uk.co.senab.photoview.PhotoView;
 
@@ -60,6 +62,18 @@ public void showImage(int position, String path, ImageView imageView) {
                         new CustomViewpagerAdapter(MainActivity.this))
                         .setIndex(3)
                         .setPaths(paths)
+                        .setOnDestroyCallback(new OnDestroyCallback() {
+                            @Override
+                            public void onDestroy(int position) {
+                                Toast.makeText(MainActivity.this, "OnDestroyCallback" + position, Toast.LENGTH_SHORT).show();
+                            }
+                        })
+                        .setOnPageChangeListener(new OnPageChangeListener() {
+                            @Override
+                            public void onChange(int position) {
+                                Toast.makeText(MainActivity.this, "OnPageChangeListener" + position, Toast.LENGTH_SHORT).show();
+                            }
+                        })
                         .setTransformerType(ImageViewer.TYPE_ZOOMOUT_TRANSFORMER)
                         .build()
                         .show(getSupportFragmentManager(), "ImageViewer");

diff --git a/...imageviewer/helper/OnDismissCallback.java → ...imageviewer/helper/OnDestroyCallback.java b/...imageviewer/helper/OnDismissCallback.java → ...imageviewer/helper/OnDestroyCallback.java
@@ -4,6 +4,6 @@
  * Created by cloudist on 2017/10/11.
  */
 
-public interface OnDismissCallback {
-    void onDismiss(int position);
+public interface OnDestroyCallback {
+    void onDestroy(int position);
 }
diff --git a/imageviewer/src/main/java/cn/imageviewer/helper/OnPageChangeListener.java b/imageviewer/src/main/java/cn/imageviewer/helper/OnPageChangeListener.java
@@ -0,0 +1,9 @@
+package cn.imageviewer.helper;
+
+/**
+ * Created by cloudist on 2017/10/12.
+ */
+
+public interface OnPageChangeListener {
+    void onChange(int position);
+}
diff --git a/imageviewer/src/main/java/cn/imageviewer/view/ImageViewer.java b/imageviewer/src/main/java/cn/imageviewer/view/ImageViewer.java
@@ -3,7 +3,6 @@
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.DialogFragment;
-import android.support.v4.app.FragmentManager;
 import android.support.v4.view.ViewPager;
 import android.view.Gravity;
 import android.view.LayoutInflater;
@@ -20,7 +19,8 @@
 import cn.imageviewer.dragable.SwipeDismissTouchListener;
 import cn.imageviewer.dragable.SwipeableFrameLayout;
 import cn.imageviewer.helper.ImageLoader;
-import cn.imageviewer.helper.OnDismissCallback;
+import cn.imageviewer.helper.OnDestroyCallback;
+import cn.imageviewer.helper.OnPageChangeListener;
 import cn.imageviewer.tranformer.CubeOutTransformer;
 import cn.imageviewer.tranformer.DefaultTransformer;
 import cn.imageviewer.tranformer.DepthPageTransformer;
@@ -50,7 +50,8 @@ public class ImageViewer extends DialogFragment {
     List<String> paths = new ArrayList<>();
     ImageLoader imageLoader;
     ViewpagerAdapter adapter;
-    OnDismissCallback onDismissCallback;
+    OnDestroyCallback onDestroyCallback;
+    OnPageChangeListener onPageChangeListener;
     int extraDismissType = TYPE_NO_EXTRA_DIMISS;
 
     @Override
@@ -109,17 +110,27 @@ public void onResume() {
         super.onResume();
         //如果在onViewCreated 设置会出现设置无效的状况
         viewpager.setCurrentItem(index);
+
+        if (onPageChangeListener != null) {
+            viewpager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
+                @Override
+                public void onPageSelected(int position) {
+                    onPageChangeListener.onChange(position);
+                }
+            });
+        }
     }
 
     @Override
-    public void onDestroyView() {
-        if (onDismissCallback != null) {
-            onDismissCallback.onDismiss(viewpager.getCurrentItem());
+    public void onHiddenChanged(boolean hidden) {
+        if (hidden) {
+            if (onDestroyCallback != null) {
+                onDestroyCallback.onDestroy(viewpager.getCurrentItem());
+            }
         }
-        super.onDestroyView();
+        super.onHiddenChanged(hidden);
     }
 
-
     private void setupViewPager(ViewPager viewPager) {
         adapter.setImageLoader(imageLoader);
         adapter.setPaths(paths);
@@ -147,7 +158,8 @@ public static class Builder {
         int transformerType = TYPE_DEFAULT_TRANSFORMER;
         List<String> paths = new ArrayList<>();
         ImageLoader imageLoader;
-        OnDismissCallback onDismissCallback;
+        OnDestroyCallback onDestroyCallback;
+        OnPageChangeListener onPageChangeListener;
         ViewpagerAdapter adapter;
         int extraDismissType = TYPE_NO_EXTRA_DIMISS;
 
@@ -171,8 +183,13 @@ public Builder setPaths(List<String> paths) {
             return this;
         }
 
-        public Builder setOnDismissCallback(OnDismissCallback onDismissCallback) {
-            this.onDismissCallback = onDismissCallback;
+        public Builder setOnDestroyCallback(OnDestroyCallback onDestroyCallback) {
+            this.onDestroyCallback = onDestroyCallback;
+            return this;
+        }
+
+        public Builder setOnPageChangeListener(OnPageChangeListener onPageChangeListener) {
+            this.onPageChangeListener = onPageChangeListener;
             return this;
         }
 
@@ -188,8 +205,9 @@ public ImageViewer build() {
             imageViewer.index = index;
             imageViewer.transformerType = transformerType;
             imageViewer.paths = paths;
-            imageViewer.onDismissCallback = onDismissCallback;
+            imageViewer.onDestroyCallback = onDestroyCallback;
             imageViewer.extraDismissType = extraDismissType;
+            imageViewer.onPageChangeListener = onPageChangeListener;
             return imageViewer;
         }
     }