切换回原来的图片视图控件

app/build.gradle

@@ -42,6 +42,8 @@ dependencies {
     api 'com.romandanylyk:pageindicatorview:1.0.1@aar'
     //nineold 配合下拉图片
     api 'com.nineoldandroids:library:2.4.0'
+    //显示大图
+    compile 'com.shizhefei:LargeImageView:1.1.0'
 }
 repositories {
     mavenCentral()

app/src/main/java/io/weimu/www/imagepicker/widget/DragViewPager.kt

@@ -71,8 +71,6 @@ class DragViewPager : ViewPager, View.OnClickListener {
                 currentPageStatus = state
             }
         })
-        //默认设置自己为显示视图
-        setCurrentShowView(this)
     }
 
 
@@ -87,6 +85,7 @@ class DragViewPager : ViewPager, View.OnClickListener {
     override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
         if (adapter !is DragViewAdapter) return super.onInterceptTouchEvent(ev)
         val mImage: LargeImageView? = (adapter as DragViewAdapter).getImageView(currentItem) //特殊操作
+        setCurrentShowView(mImage)
         if (mImage == null) return super.onInterceptTouchEvent(ev)
         val canPullDown = mImage.canScrollVertically(0)//是否可以下拉
         when (ev.action) {

build.gradle

@@ -19,7 +19,6 @@ allprojects {
         jcenter()
         google()
         maven { url "https://jitpack.io" }
-//        maven { url  "https://dl.bintray.com/yongdongji/android" }
     }
     //加上这些
     tasks.withType(Javadoc) {

imagepicker/build.gradle

@@ -31,10 +31,10 @@ dependencies {
     compile "com.github.caoyanglee:universalui:$rootProject.universal_view"
     //裁剪图
     compile 'com.isseiaoki:simplecropview:1.1.7@aar'
+    //图片预览
+    compile 'com.github.chrisbanes:PhotoView:2.1.3'
     //鲁班压缩
     compile 'top.zibin:Luban:1.1.3'
-    //显示大图
-    compile 'com.shizhefei:LargeImageView:1.1.0'
 }
 repositories {
     mavenCentral()

imagepicker/src/main/java/com/weimu/imagepicker/ui/ImageSelectorActivity.kt

@@ -257,7 +257,7 @@ internal class ImageSelectorActivity : BaseActivity() {
 
     @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
     fun startPreviewWithAnim(previewImages: List<LocalMedia>, position: Int, view: View) {
-        ImagePreviewActivity.startPreview(this, imageAdapter.selectedImages, maxSelectNum, position)
+        ImagePreviewActivity.startPreviewWithAnim(this, imageAdapter.selectedImages, maxSelectNum, position,view)
     }
 
     fun startPreview(previewImages: List<LocalMedia>, position: Int) {

imagepicker/src/main/java/com/weimu/imagepicker/ui/preview/HackyViewPager.kt

@@ -0,0 +1,27 @@
+package com.weimu.imagepicker.ui.preview
+
+import android.content.Context
+import android.support.v4.view.ViewPager
+import android.util.AttributeSet
+import android.view.MotionEvent
+
+/**
+ * Author:你需要一台永动机
+ * Date:2019/3/21 10:36
+ * Description:防止图片放大闪退
+ */
+class HackyViewPager : ViewPager {
+
+    constructor(context: Context) : super(context) {}
+
+    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {}
+
+    override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
+        try {
+            return super.onInterceptTouchEvent(ev)
+        } catch (e: IllegalArgumentException) {
+            return false
+        }
+
+    }
+}

imagepicker/src/main/java/com/weimu/imagepicker/ui/preview/ImagePreviewActivity.kt

@@ -217,7 +217,7 @@ internal class ImagePreviewActivity : BaseActivity() {
         intent.putExtra(OUTPUT_ISDONE, isDone)
         setResult(Activity.RESULT_OK, intent)
         super.onBackPressed()
-        overridePendingTransition(-1, R.anim.fade_out)
+        //overridePendingTransition(-1, R.anim.fade_out)
     }
 
     override fun onBackPressed() {

imagepicker/src/main/java/com/weimu/imagepicker/ui/preview/ImagePreviewFragment.kt

@@ -1,16 +1,16 @@
 package com.weimu.imagepicker.ui.preview
 
-import android.graphics.BitmapFactory
 import android.os.Bundle
-import com.shizhefei.view.largeimage.factory.FileBitmapDecoderFactory
 import com.weimu.imagepicker.R
 import com.weimu.universalview.core.fragment.BaseFragment
+import com.weimu.universalview.ktx.load
 import kotlinx.android.synthetic.main.fragment_image_preview.*
-import java.io.File
 
 
 internal class ImagePreviewFragment : BaseFragment() {
 
+    private var path = ""
+
     companion object {
 
         val PATH = "path"
@@ -24,48 +24,18 @@ internal class ImagePreviewFragment : BaseFragment() {
         }
     }
 
-    override fun afterViewAttachBaseViewAction(savedInstanceState: Bundle?) {}
-
-    override fun beforeViewAttachBaseViewAction(savedInstanceState: Bundle?) {}
-
     override fun getLayoutResID(): Int = R.layout.fragment_image_preview
 
+    override fun beforeViewAttach(savedInstanceState: Bundle?) {
+        path = "${arguments!!.getString(PATH)}"
+    }
+
     override fun afterViewAttach(savedInstanceState: Bundle?) {
-        showImage(File("${arguments!!.getString(PATH)}"))
-        iv_large.setOnClickListener {
+        photo_view.load(path)
+        photo_view.setOnPhotoTapListener { view, x, y ->
             val activity = activity as ImagePreviewActivity
             activity.isShowBar = !activity.isShowBar
         }
     }
 
-
-    //显示图片
-    private fun showImage(file: File) {
-        if (iv_large == null) return
-        try {
-            val options = BitmapFactory.Options()
-            /**
-             * 最关键在此，把options.inJustDecodeBounds = true;
-             * 这里再decodeFile()，返回的bitmap为空，但此时调用options.outHeight时，已经包含了图片的高了
-             */
-            options.inJustDecodeBounds = true
-
-            val targetBitmap = BitmapFactory.decodeFile(file.toString())// 此时返回的bitmap为null
-
-            val bitmapHeight = targetBitmap.height
-            val bitmapWidth = targetBitmap.width
-            if (bitmapHeight >= 4 * bitmapWidth || bitmapWidth >= 4 * bitmapHeight) {
-                //加载大图
-                iv_large?.setImage(FileBitmapDecoderFactory(file))
-            } else {
-                //加载普通图
-                iv_large.setImage(targetBitmap)
-            }
-        } catch (e: OutOfMemoryError) {
-            iv_large?.setImage(FileBitmapDecoderFactory(file))
-        } catch (e: Exception) {
-            iv_large?.setImage(FileBitmapDecoderFactory(file))
-        }
-    }
-
 }

imagepicker/src/main/res/layout/activity_image_preview.xml

@@ -12,7 +12,7 @@
         android:layout_height="match_parent">
 
 
-        <android.support.v4.view.ViewPager
+        <com.weimu.imagepicker.ui.preview.HackyViewPager
             android:id="@+id/drag_viewPager"
             android:layout_width="match_parent"
             android:layout_height="match_parent"

imagepicker/src/main/res/layout/fragment_image_preview.xml

@@ -4,9 +4,10 @@
     android:layout_height="match_parent"
     android:orientation="vertical">
 
-    <com.shizhefei.view.largeimage.LargeImageView
-        android:id="@+id/iv_large"
+
+    <com.github.chrisbanes.photoview.PhotoView
+        android:id="@+id/photo_view"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:scrollbars="vertical|horizontal" />
+        android:layout_height="match_parent"/>
+
 </LinearLayout>

imagepicker/src/main/res/values-zh-rCN/strings.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+    <string name="app_name">图片选择器</string>
     <string name="all_image">所有图片</string>
     <string name="take_picture">拍摄照片</string>
     <string name="preview_num">预览(%1$s)</string>