PhotoPickerNewDemo【PhotoPicker0.9.12的個性化修改以及使用（內部glide版本號是4.1.1）】

時間 2019-11-06

標籤 photopickernewdemo photopicker0.9.12 photopicker 個性化修改以及使用內部 glide 本號 4.1.1 简体版

原文原文鏈接

前言

本Demo使用的是PhotoPicker 0.9.12版本，裏面集成的glide版本號是4.1.1。這裏就不進行特殊的個性化處理了（好比新增NewImagePagerDialogFragment.java用於對話框樣式預覽圖片、新增NewPhotoPickerFragment.java用於單獨做爲自定義DialogFragment的其中一個Fragment和其餘Fragment共存），而是記錄下使用步驟（固然了，github上講解的很清楚了，你們能夠直接參考《donglua/PhotoPicker》）。java

不過，本文對PhotoPicker進行了簡單的修改，對UI進行了部分修改。【因此本Demo最後使用的是方式2——經過引入PhotoPicker這個module的方式】android

效果圖

代碼分析

引入PhotoPicker有兩種方式【二選一】git

一、經過Gradle方式，在APP的build.gradle中引用【見導入步驟】

二、下載整個壓縮包，而後導入PhotoPicker的module，而後修改圖片資源

2.一、下載壓縮包

2.二、導入PhotoPicker的Module

提示下面的錯誤：github

2.三、解決Plugin with id 'com.novoda.bintray-release' not found.問題

在項目的build.gradle文件中添加如下代碼緩存

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
        //解決PhotoPicker的Plugin with id 'com.novoda.bintray-release' not found. classpath 'com.novoda:bintray-release:0.5.0'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

2.四、修改圖片資源（好比__picker_ic_photo_black_48dp.png、__picker_checkbox_marked.png、__picker_checkbox_n.png）

注意：須要修改全部drawable-xxxx目錄下的圖片app

原始的圖片資源：ide

修改後的圖片資源：函數

2.五、添加圖片資源【__picker_transparent_bg.png、down_arrow.png、up_arrow.png】

添加到drawable-xxhdpi目錄下佈局

2.六、修改drawable目錄下的__picker_photo_bg.xml和__picker_checkbox_bg.xml【主要用於替換圖片列表項的底部背景圖】

原代碼1：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:state_selected="true">
    <shape>
      <stroke android:color="@color/__picker_item_photo_border_selected"
          android:width="1dip"/>
    </shape>
  </item>

  <item>
    <shape>
      <stroke android:color="@color/__picker_item_photo_border_n"
          android:width="1dip"/>
    </shape>
  </item>


</selector>

__picker_photo_bg.xml

修改後的代碼：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_selected="true">
    <shape android:shape="rectangle">
      <stroke android:width="2dip"
              android:color="@color/__picker_item_photo_border_selected"/>
      <solid android:color="@color/__picker_selected_bg"/>
      <solid></solid>
    </shape>
  </item>

  <item android:drawable="@drawable/__picker_transparent_bg">
    <shape android:shape="rectangle">
      <stroke android:width="2dip"
              android:color="@color/__picker_item_photo_border_n"/>
      <!--<solid android:color="#00000000"/>-->
    </shape>
  </item>
</selector>

原代碼2：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:state_selected="true">
    <layer-list>
      <item>
        <shape>
          <corners android:radius="2dip"/>
          <padding android:top="-2dip"
              android:left="-2dip"
              android:bottom="-2dip"
              android:right="-2dip"/>
          <stroke android:width="1dip"
              android:color="@android:color/white"/>
        </shape>
      </item>
      <item android:drawable="@drawable/__picker_checkbox_marked"/>
    </layer-list>
  </item>

  <item>
    <layer-list>
      <item>
        <shape>
          <corners android:radius="2dip"/>
          <padding android:top="-2dip"
              android:left="-2dip"
              android:bottom="-2dip"
              android:right="-2dip"/>
          <stroke android:width="1dip"
              android:color="@android:color/white"/>
        </shape>
      </item>
      <item android:drawable="@drawable/__picker_checkbox_n"/>
    </layer-list>
  </item>

</selector>

__picker_checkbox_bg.xml

修改後的

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:state_selected="true">
    <layer-list>
      <!--<item>
        <shape>
          <corners android:radius="10dip"/>
          <padding android:top="-2dip"
              android:left="-2dip"
              android:bottom="-2dip"
              android:right="-2dip"/>
          <stroke android:width="1dip"
              android:color="@android:color/white"/>
          <solid android:color="@android:color/white"></solid>
        </shape>
      </item>-->
      <item android:drawable="@drawable/__picker_checkbox_marked"/>
    </layer-list>
  </item>

  <item>
    <layer-list>
      <!--<item>
        <shape>
          <corners android:radius="10dip"/>
          <padding android:top="-2dip"
              android:left="-2dip"
              android:bottom="-2dip"
              android:right="-2dip"/>
          <stroke android:width="1dip"
              android:color="@android:color/white"/>
          <solid android:color="@android:color/white"></solid>
        </shape>
      </item>-->
      <item android:drawable="@drawable/__picker_checkbox_n"/>
    </layer-list>
  </item>

</selector>

2.七、修改__picker_fragment_photo_picker.xml文件【主要用於添加圖片目錄的上下箭頭圖標】

原代碼

<?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"
    >

  <android.support.v7.widget.RecyclerView
      android:id="@+id/rv_photos"
      android:layout_width="match_parent"
      android:gravity="center"
      android:layout_weight="1"
      android:layout_height="0dip"
      />


  <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:background="?attr/colorPrimary"
      >
        <Button
            android:id="@+id/button"
            android:text="@string/__picker_all_image"
            android:layout_width="wrap_content"
            android:gravity="center"
            android:layout_height="wrap_content"
            style="@style/Widget.AppCompat.ActionButton"
            />

  </LinearLayout>

</LinearLayout>

__picker_fragment_photo_picker.xml

修改後的代碼

<?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"
    >

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_photos"
        android:layout_width="match_parent"
        android:gravity="center"
        android:layout_weight="1"
        android:layout_height="0dip"
        />

    <View android:layout_width="match_parent" android:layout_height="1dp" android:background="#e9e9e9"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        >
        <!--<Button android:id="@+id/button" android:text="@string/__picker_all_image" android:layout_width="wrap_content" android:gravity="center" android:layout_height="wrap_content" style="@style/Widget.AppCompat.ActionButton" />-->

        <TextView android:id="@+id/button" android:layout_width="0.0dp" android:layout_weight="1" android:layout_height="match_parent" android:text="@string/__picker_all_image" android:textColor="@color/__picker_text_120" android:textSize="16sp" android:drawableRight="@drawable/up_arrow" android:drawablePadding="8dp" android:paddingLeft="10dp" android:paddingRight="10dp" android:gravity="center_vertical" style="@style/Widget.AppCompat.ActionButton"
            />
        <!-- 如今用不到，只是佔位用 -->
        <ImageView android:layout_width="0.0dp" android:layout_weight="1" android:layout_height="match_parent" android:src="@drawable/__picker_camera" android:layout_gravity="center_vertical" android:paddingLeft="15dp" android:paddingRight="15dp" android:visibility="invisible"/>

    </LinearLayout>

</LinearLayout>

2.八、修改PhotoPickerFragment.java文件【主要是實現上下箭頭的更換功能】

搜索why，查看改動的代碼：

package me.iwf.photopicker.fragment;

import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.content.ContextCompat;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.ListPopupWindow;
import android.support.v7.widget.OrientationHelper;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.PopupWindow;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.RequestManager;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import me.iwf.photopicker.PhotoPickerActivity;
import me.iwf.photopicker.R;
import me.iwf.photopicker.adapter.PhotoGridAdapter;
import me.iwf.photopicker.adapter.PopupDirectoryListAdapter;
import me.iwf.photopicker.entity.Photo;
import me.iwf.photopicker.entity.PhotoDirectory;
import me.iwf.photopicker.event.OnPhotoClickListener;
import me.iwf.photopicker.utils.AndroidLifecycleUtils;
import me.iwf.photopicker.utils.ImageCaptureManager;
import me.iwf.photopicker.utils.MediaStoreHelper;
import me.iwf.photopicker.utils.PermissionsConstant;
import me.iwf.photopicker.utils.PermissionsUtils;

import static android.app.Activity.RESULT_OK;
import static me.iwf.photopicker.PhotoPicker.DEFAULT_COLUMN_NUMBER;
import static me.iwf.photopicker.PhotoPicker.EXTRA_PREVIEW_ENABLED;
import static me.iwf.photopicker.PhotoPicker.EXTRA_SHOW_GIF;
import static me.iwf.photopicker.utils.MediaStoreHelper.INDEX_ALL_PHOTOS;

/**
 * Created by donglua on 15/5/31.
 */
public class PhotoPickerFragment extends Fragment {

  private ImageCaptureManager captureManager;
  private PhotoGridAdapter photoGridAdapter;

  private PopupDirectoryListAdapter listAdapter;
  //全部photos的路徑
  private List<PhotoDirectory> directories;
  //傳入的已選照片
  private ArrayList<String> originalPhotos;

  private int SCROLL_THRESHOLD = 30;
  int column;
  //目錄彈出框的一次最多顯示的目錄數目
  public static int COUNT_MAX = 4;
  private final static String EXTRA_CAMERA = "camera";
  private final static String EXTRA_COLUMN = "column";
  private final static String EXTRA_COUNT = "count";
  private final static String EXTRA_GIF = "gif";
  private final static String EXTRA_ORIGIN = "origin";
  private ListPopupWindow listPopupWindow;
  private RequestManager mGlideRequestManager;

  public static PhotoPickerFragment newInstance(boolean showCamera, boolean showGif,
      boolean previewEnable, int column, int maxCount, ArrayList<String> originalPhotos) {
    Bundle args = new Bundle();
    args.putBoolean(EXTRA_CAMERA, showCamera);
    args.putBoolean(EXTRA_GIF, showGif);
    args.putBoolean(EXTRA_PREVIEW_ENABLED, previewEnable);
    args.putInt(EXTRA_COLUMN, column);
    args.putInt(EXTRA_COUNT, maxCount);
    args.putStringArrayList(EXTRA_ORIGIN, originalPhotos);
    PhotoPickerFragment fragment = new PhotoPickerFragment();
    fragment.setArguments(args);
    return fragment;
  }

  @Override public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setRetainInstance(true);

    mGlideRequestManager = Glide.with(this);

    directories = new ArrayList<>();
    originalPhotos = getArguments().getStringArrayList(EXTRA_ORIGIN);

    column = getArguments().getInt(EXTRA_COLUMN, DEFAULT_COLUMN_NUMBER);
    boolean showCamera = getArguments().getBoolean(EXTRA_CAMERA, true);
    boolean previewEnable = getArguments().getBoolean(EXTRA_PREVIEW_ENABLED, true);

    photoGridAdapter = new PhotoGridAdapter(getActivity(), mGlideRequestManager, directories, originalPhotos, column);
    photoGridAdapter.setShowCamera(showCamera);
    photoGridAdapter.setPreviewEnable(previewEnable);

    listAdapter  = new PopupDirectoryListAdapter(mGlideRequestManager, directories);

    Bundle mediaStoreArgs = new Bundle();

    boolean showGif = getArguments().getBoolean(EXTRA_GIF);
    mediaStoreArgs.putBoolean(EXTRA_SHOW_GIF, showGif);
    MediaStoreHelper.getPhotoDirs(getActivity(), mediaStoreArgs,
        new MediaStoreHelper.PhotosResultCallback() {
          @Override public void onResultCallback(List<PhotoDirectory> dirs) {
            directories.clear();
            directories.addAll(dirs);
            photoGridAdapter.notifyDataSetChanged();
            listAdapter.notifyDataSetChanged();
            adjustHeight();
          }
        });

    captureManager = new ImageCaptureManager(getActivity());
  }

  @Override
  public void onResume() {
    super.onResume();
    if(getActivity() instanceof PhotoPickerActivity){
      PhotoPickerActivity photoPickerActivity = (PhotoPickerActivity) getActivity();
      photoPickerActivity.updateTitleDoneItem();
    }
  }


  @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {

    final View rootView = inflater.inflate(R.layout.__picker_fragment_photo_picker, container, false);

    RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.rv_photos);
    StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(column, OrientationHelper.VERTICAL);
    layoutManager.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS);
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(photoGridAdapter);
    recyclerView.setItemAnimator(new DefaultItemAnimator());

    //final Button btSwitchDirectory = (Button) rootView.findViewById(R.id.button);
    final TextView btSwitchDirectory = (TextView) rootView.findViewById(R.id.button);//why

    listPopupWindow = new ListPopupWindow(getActivity());
    listPopupWindow.setWidth(ListPopupWindow.MATCH_PARENT);
    listPopupWindow.setAnchorView(btSwitchDirectory);
    listPopupWindow.setAdapter(listAdapter);
    listPopupWindow.setModal(true);
    listPopupWindow.setDropDownGravity(Gravity.BOTTOM);

    listPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
      @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        listPopupWindow.dismiss();

        PhotoDirectory directory = directories.get(position);

        btSwitchDirectory.setText(directory.getName());

        photoGridAdapter.setCurrentDirectoryIndex(position);
        photoGridAdapter.notifyDataSetChanged();
      }
    });

    //添加popwindow隱藏的監聽--why
    listPopupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
      @Override
      public void onDismiss() {
        //監聽popwindow隱藏的時候的操做
        Drawable drawableUp = ContextCompat.getDrawable(getActivity(),R.drawable.up_arrow);
        drawableUp.setBounds(0, 0, drawableUp.getMinimumWidth(), drawableUp.getMinimumHeight());
        btSwitchDirectory.setCompoundDrawables(null,null,drawableUp,null);
      }
    });

    photoGridAdapter.setOnPhotoClickListener(new OnPhotoClickListener() {
      @Override public void onClick(View v, int position, boolean showCamera) {
        final int index = showCamera ? position - 1 : position;

        List<String> photos = photoGridAdapter.getCurrentPhotoPaths();

        ImagePagerFragment imagePagerFragment =
            ImagePagerFragment.newInstance(photos, index);

        ((PhotoPickerActivity) getActivity()).addImagePagerFragment(imagePagerFragment);
      }
    });

    photoGridAdapter.setOnCameraClickListener(new OnClickListener() {
      @Override public void onClick(View view) {
        if (!PermissionsUtils.checkCameraPermission(PhotoPickerFragment.this)) return;
        if (!PermissionsUtils.checkWriteStoragePermission(PhotoPickerFragment.this)) return;
        openCamera();
      }
    });

    btSwitchDirectory.setOnClickListener(new OnClickListener() {
      @Override public void onClick(View v) {

        if (listPopupWindow.isShowing()) {
          listPopupWindow.dismiss();
        } else if (!getActivity().isFinishing()) {
          adjustHeight();
          //why
          Drawable drawableDown = ContextCompat.getDrawable(getActivity(),R.drawable.down_arrow);
          drawableDown.setBounds(0, 0, drawableDown.getMinimumWidth(), drawableDown.getMinimumHeight());
          btSwitchDirectory.setCompoundDrawables(null,null,drawableDown,null);
          listPopupWindow.show();
        }
      }
    });


    recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
      @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);
        // Log.d(">>> Picker >>>", "dy = " + dy);
        if (Math.abs(dy) > SCROLL_THRESHOLD) {
          mGlideRequestManager.pauseRequests();
        } else {
          resumeRequestsIfNotDestroyed();
        }
      }
      @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
        if (newState == RecyclerView.SCROLL_STATE_IDLE) {
          resumeRequestsIfNotDestroyed();
        }
      }
    });

    return rootView;
  }

  private void openCamera() {
    try {
      Intent intent = captureManager.dispatchTakePictureIntent();
      startActivityForResult(intent, ImageCaptureManager.REQUEST_TAKE_PHOTO);
    } catch (IOException e) {
      e.printStackTrace();
    } catch (ActivityNotFoundException e) {
      Log.e("PhotoPickerFragment", "No Activity Found to handle Intent", e);
    }
  }

  @Override public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == ImageCaptureManager.REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {

      if (captureManager == null) {
        FragmentActivity activity = getActivity();
        captureManager = new ImageCaptureManager(activity);
      }

      captureManager.galleryAddPic();
      if (directories.size() > 0) {
        String path = captureManager.getCurrentPhotoPath();
        PhotoDirectory directory = directories.get(INDEX_ALL_PHOTOS);
        directory.getPhotos().add(INDEX_ALL_PHOTOS, new Photo(path.hashCode(), path));
        directory.setCoverPath(path);
        photoGridAdapter.notifyDataSetChanged();
      }
    }
  }

  @Override
  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (grantResults.length > 0
            && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
      switch (requestCode) {
        case PermissionsConstant.REQUEST_CAMERA:
        case PermissionsConstant.REQUEST_EXTERNAL_WRITE:
          if (PermissionsUtils.checkWriteStoragePermission(this) &&
                  PermissionsUtils.checkCameraPermission(this)) {
            openCamera();
          }
          break;
      }
    }
  }

  public PhotoGridAdapter getPhotoGridAdapter() {
    return photoGridAdapter;
  }


  @Override public void onSaveInstanceState(Bundle outState) {
    captureManager.onSaveInstanceState(outState);
    super.onSaveInstanceState(outState);
  }


  @Override public void onViewStateRestored(Bundle savedInstanceState) {
    captureManager.onRestoreInstanceState(savedInstanceState);
    super.onViewStateRestored(savedInstanceState);
  }

  public ArrayList<String> getSelectedPhotoPaths() {
    return photoGridAdapter.getSelectedPhotoPaths();
  }

  public void adjustHeight() {
    if (listAdapter == null) return;
    int count = listAdapter.getCount();
    count = count < COUNT_MAX ? count : COUNT_MAX;
    if (listPopupWindow != null) {
      listPopupWindow.setHeight(count * getResources().getDimensionPixelOffset(R.dimen.__picker_item_directory_height));
    }
  }

  @Override public void onDestroy() {
    super.onDestroy();

    if (directories == null) {
      return;
    }

    for (PhotoDirectory directory : directories) {
      directory.getPhotoPaths().clear();
      directory.getPhotos().clear();
      directory.setPhotos(null);
    }
    directories.clear();
    directories = null;
  }

  private void resumeRequestsIfNotDestroyed() {
    if (!AndroidLifecycleUtils.canLoadImage(this)) {
      return;
    }

    mGlideRequestManager.resumeRequests();
  }
}

PhotoPickerFragment.java

2.九、修改__picker_item_photo.xml，設置圖片列表項的內邊距值

<?xml version="1.0" encoding="utf-8"?>
<me.iwf.photopicker.widget.SquareItemLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" android:padding="3dp"
    >
  <ImageView
      android:padding="1dip"
      android:layout_gravity="center"
      android:id="@+id/iv_photo"
      android:scaleType="centerCrop"
      android:layout_width="match_parent"
      android:background="@drawable/__picker_photo_bg"
      android:layout_height="match_parent"
      android:adjustViewBounds="true"
      />

  <ImageView
      android:layout_alignParentTop="true"
      android:layout_alignParentRight="true"
      android:clickable="true"
      android:paddingTop="10dip"
      android:paddingRight="10dip"
      android:paddingLeft="20dip"
      android:paddingBottom="20dip"
      android:id="@+id/v_selected"
      android:src="@drawable/__picker_checkbox_bg"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      />

</me.iwf.photopicker.widget.SquareItemLayout>

2.十、修改圖片列表項選中後的顏色值（colors.xml文件中修改）

<?xml version="1.0" encoding="utf-8"?>
<resources>

  <color name="__picker_pager_bg">#CA000000</color>
  <color name="__picker_selected_bg">#44000000</color>
  <color name="__picker_black_40">#282828</color>
  <color name="__picker_common_primary">#f3f3f3</color>

  <color name="__picker_text_40">#282828</color>
  <color name="__picker_text_80">#505050</color>
  <color name="__picker_text_120">#787878</color>
  <!--<color name="__picker_item_photo_border_selected">#ff99cc00</color>-->
  <!--why-->
  <color name="__picker_item_photo_border_selected">#1A78EC</color>
  <color name="__picker_item_photo_border_n">#33ffffff</color>

</resources>

至此，PhotoPicker基本上修改完了，後續能夠根據需求繼續修改。下面就是運用到APP中的步驟【導入步驟跟方式1幾乎同樣，不一樣的就是app的build.gradle導入的photopicker不同】。

2.十一、在APP的build.gradle文件添加如下代碼

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.why.project.photopickernewdemo"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    //PhotoPicker
    //compile 'me.iwf.photopicker:PhotoPicker:0.9.12@aar' //方式2：使用本身導入而且修改後的module implementation project(':PhotoPicker')
    //compile 'com.android.support:appcompat-v7:27.1.1'//須要註釋，由於新建項目都會自動引用這個appcompat-v7 compile 'com.android.support:recyclerview-v7:27.1.1' compile 'com.android.support:design:27.1.1' compile 'com.github.bumptech.glide:glide:4.1.1'
}

2.十二、在APP的AndroidManifest.xml中添加如下代碼

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.why.project.photopickernewdemo">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <!-- PhotoPicker -->
        <activity android:name="me.iwf.photopicker.PhotoPickerActivity" android:theme="@style/customTheme"
            />
        <activity android:name="me.iwf.photopicker.PhotoPagerActivity" android:theme="@style/customTheme"/>
    </application>

</manifest>

2.1三、在styles.xml文件中添加如下代碼

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>


    <!-- PhotoPicker -->
    <style name="customTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- 解開註釋的話，右側的完成文本始終是設置的顏色，沒法實現禁用狀態下是灰色的功能 -->
        <!--<item name="actionBarTheme">@style/actionBarTheme</item>-->
        <!--背景顏色值-->
        <item name="colorPrimary">#ffffff</item>
        <!--導航欄高度值-->
        <item name="actionBarSize">52dp</item>
        <!-- 狀態欄着色 -->
        <item name="colorPrimaryDark">#378dfc</item>
    </style>
    <style name="actionBarTheme" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
        <!--標題顏色值-->
        <item name="android:textColorPrimary">#434343</item>
        <!--右側完成文本的大小值-->
        <item name="android:textSize">16sp</item>
        <!--右側完成文本的顏色值-->
        <item name="android:actionMenuTextColor">#1A78EC</item>
    </style>

</resources>

具體使用參考《3、使用方法》

使用步驟

1、項目組織結構圖

注意事項：

一、導入類文件後須要change包名以及從新import R文件路徑

二、 Values目錄下的文件（strings.xml、dimens.xml、colors.xml等），若是項目中存在，則複製裏面的內容，不要整個覆蓋

2、導入步驟【方式1的導入步驟】

（1）在app的build.gradle文件中導入PhotoPicker【修改recyclerview、design的版本號和appcompat-v7統一】

注意：appcompat-v7version >= 23.0.0

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.why.project.photopickernewdemo"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    //PhotoPicker compile 'me.iwf.photopicker:PhotoPicker:0.9.12@aar' //compile 'com.android.support:appcompat-v7:27.1.1'//須要註釋，由於新建項目都會自動引用這個appcompat-v7 compile 'com.android.support:recyclerview-v7:27.1.1' compile 'com.android.support:design:27.1.1' compile 'com.github.bumptech.glide:glide:4.1.1'
}

（2）在APP的styles.xml文件中自定義樣式（顏色、高度值等）

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>


    <!-- PhotoPicker -->
    <style name="customTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- 解開註釋的話，右側的完成文本始終是設置的顏色，沒法實現禁用狀態下是灰色的功能 -->
        <!--<item name="actionBarTheme">@style/actionBarTheme</item>-->
        <!--背景顏色值-->
        <item name="colorPrimary">#ffffff</item>
        <!--導航欄高度值-->
        <item name="actionBarSize">52dp</item>
        <!-- 狀態欄着色 -->
        <item name="colorPrimaryDark">#378dfc</item>
    </style>
    <style name="actionBarTheme" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
        <!--標題顏色值-->
        <item name="android:textColorPrimary">#434343</item>
        <!--右側完成文本的大小值-->
        <item name="android:textSize">16sp</item>
        <!--右側完成文本的顏色值-->
        <item name="android:actionMenuTextColor">#1A78EC</item>
    </style>

</resources>

（3）在APP的AndroidManifest.xml中添加如下代碼【注意：使用上面自定義的樣式】

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.why.project.photopickernewdemo">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <!-- PhotoPicker -->
        <activity android:name="me.iwf.photopicker.PhotoPickerActivity" android:theme="@style/customTheme"
            />
        <activity android:name="me.iwf.photopicker.PhotoPagerActivity" android:theme="@style/customTheme"/>
    </application>

</manifest>

3、使用方法

（1）在項目中實現Recyclerview基本數據展示【比較簡單，省略】【或者參考《Android快速開發經常使用知識點系列目錄》下的RecyclerView篇章相關文章】

注意：PictureAdapter.java中使用的Glide是4.1.1版本，因此寫法跟以前的Glide3.7.0版本是不同的。

package com.why.project.photopickernewdemo.adapter;

import android.content.Context;
import android.net.Uri;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.Priority;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.bumptech.glide.request.RequestOptions;
import com.why.project.photopickernewdemo.R;
import com.why.project.photopickernewdemo.bean.PictureBean;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import static com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions.withCrossFade;

/**
 * Created by HaiyuKing
 * Used 照片網格適配器
 */

public class PictureAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{

    private static final String TAG = PictureAdapter.class.getSimpleName();

    /**上下文*/
    private Context myContext;
    /**自定義列表項標題集合*/
    private ArrayList<PictureBean> listitemList;

    final static int TYPE_ADD = 1;
    final static int TYPE_PHOTO = 2;

    public final static int MAX = 15;//總數目，這裏根據實際狀況設置，設置100基本上代表無限制了

    /*
    * 構造函數
    */
    public PictureAdapter(Context context, ArrayList<PictureBean> itemlist) {
        myContext = context;
        listitemList = itemlist;
    }

    /**
     * 獲取總的條目數
     */
    @Override
    public int getItemCount() {
        Log.w(TAG,"{getItemCount}listitemList.size()="+listitemList.size());
        int count = listitemList.size();
        if (count > MAX) {
            count = MAX;
        }
        count = count + 1;
        return count;
    }

    @Override
    public int getItemViewType(int position) {
        Log.w(TAG,"{getItemViewType}position="+position);
        Log.w(TAG,"{getItemViewType}listitemList.size()="+listitemList.size());
        return (position == listitemList.size()) ? TYPE_ADD : TYPE_PHOTO;
    }

    /**
     * 建立ViewHolder
     */
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if(viewType == TYPE_ADD) {
            View viewfoot = LayoutInflater.from(myContext).inflate(R.layout.pic_grid_foot_item, parent, false);
            ItemFootViewHolder itemfootViewHolder = new ItemFootViewHolder(viewfoot);
            return itemfootViewHolder;
        } else if(viewType == TYPE_PHOTO) {
            View view = LayoutInflater.from(myContext).inflate(R.layout.pic_grid_item, parent, false);
            ItemViewHolder itemViewHolder = new ItemViewHolder(view);
            return itemViewHolder;
        }
        return null;
    }

    /**
     * 聲明列表項ViewHolder*/
    static class ItemViewHolder extends RecyclerView.ViewHolder
    {
        public ItemViewHolder(View view)
        {
            super(view);
            griditemLayout = (LinearLayout) view.findViewById(R.id.griditemLayout);
            griditemimgLayout = (RelativeLayout) view.findViewById(R.id.griditemimgLayout);
            grid_img = (ImageView) view.findViewById(R.id.grid_img);
            grid_img_state = (TextView) view.findViewById(R.id.grid_img_state);
        }

        LinearLayout griditemLayout;
        RelativeLayout griditemimgLayout;
        ImageView grid_img;

        TextView grid_img_state;
    }

    /**
     * 聲明最後一個ViewHolder*/
    static class ItemFootViewHolder extends RecyclerView.ViewHolder
    {
        public ItemFootViewHolder(View view)
        {
            super(view);
            gridfootitemLayout = (RelativeLayout) view.findViewById(R.id.gridfootitemLayout);
        }
        RelativeLayout gridfootitemLayout;
    }

    /**
     * 將數據綁定至ViewHolder
     */
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int index) {

        if(viewHolder instanceof ItemViewHolder){
            PictureBean listItemModel = listitemList.get(index);
            final ItemViewHolder itemViewHold = ((ItemViewHolder)viewHolder);

            Uri uri = Uri.fromFile(new File(listItemModel.getPicPath()));

            RequestOptions options = new RequestOptions() //設置等待時的圖片
 .placeholder(R.drawable.img_loading) //設置加載失敗後的圖片顯示
 .error(R.drawable.img_error) //緩存策略,跳過內存緩存【此處應該設置爲false，不然列表刷新時會閃一下】
                    .skipMemoryCache(false) //緩存策略,硬盤緩存-僅僅緩存最終的圖像，即下降分辨率後的（或者是轉換後的）
 .diskCacheStrategy(DiskCacheStrategy.ALL) //設置圖片加載的優先級
 .priority(Priority.HIGH); Glide.with(myContext) .load(uri) .apply(options) //默認淡入淡出動畫
 .transition(withCrossFade()) .into(itemViewHold.grid_img);

            itemViewHold.grid_img_state.setText("(" + (index+1) + "/" + listitemList.size() + ")");

            //若是設置了回調，則設置點擊事件
            if (mOnItemClickLitener != null)
            {
                itemViewHold.grid_img.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        int position = itemViewHold.getLayoutPosition();//在增長數據或者減小數據時候，position和index就不同了
                        mOnItemClickLitener.onItemClick(view,position);
                    }
                });
            }
        }else if(viewHolder instanceof ItemFootViewHolder){
            final ItemFootViewHolder itemFootViewHold = ((ItemFootViewHolder)viewHolder);
            //若是設置了回調，則設置點擊事件
            if (mOnItemClickLitener != null)
            {
                itemFootViewHold.gridfootitemLayout.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        mOnItemClickLitener.onItemAddClick();
                    }
                });
            }
        }

    }

    /**
     * 添加Item--用於動畫的展示*/
    public void addItem(int position,PictureBean itemModel) {
        listitemList.add(position,itemModel);
        notifyItemInserted(position);
    }
    /**
     * 刪除Item--用於動畫的展示*/
    public void removeItem(int position) {
        listitemList.remove(position);
        notifyItemRemoved(position);
    }

    /*=====================添加OnItemClickListener回調================================*/
    public interface OnItemClickLitener
    {
        /**圖片的點擊事件*/
        void onItemClick(View view, int position);
        /**添加的點擊事件*/
        void onItemAddClick();
    }

    private OnItemClickLitener mOnItemClickLitener;

    public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener)
    {
        this.mOnItemClickLitener = mOnItemClickLitener;
    }

    //返回當前圖片集合的全部路徑集合【用於預覽】
    public List<String> getAllPhotoPaths() {
        List<String> allPhotoPaths = new ArrayList<String>(listitemList.size());
        for (PictureBean  pictureBean: listitemList) {
            allPhotoPaths.add(pictureBean.getPicPath());
        }
        return allPhotoPaths;
    }

}

（2）常規使用

package com.why.project.photopickernewdemo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.why.project.photopickernewdemo.adapter.PictureAdapter;
import com.why.project.photopickernewdemo.bean.PictureBean;
import com.why.project.photopickernewdemo.utils.Globals;

import java.util.ArrayList;

import me.iwf.photopicker.PhotoPicker;
import me.iwf.photopicker.PhotoPreview;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = MainActivity.class.getSimpleName();

    private RecyclerView mRecyclerView; private ArrayList<PictureBean> mPictureBeansList; private PictureAdapter mPictureAdapter; private ArrayList<String> selPhotosPath = null;//選中的圖片路徑集合

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initViews();
        initDatas();
        initEvents();
    }

    private void initViews() {
        mRecyclerView = findViewById(R.id.picture_grid);
    }

    private void initDatas() {
        selPhotosPath = new ArrayList<String>(); //=============圖片九宮格=========================
        mPictureAdapter = null; mPictureBeansList = new ArrayList<PictureBean>(); //設置佈局管理器
        GridLayoutManager gridLayoutManager = new GridLayoutManager(this, 3); mRecyclerView.setLayoutManager(gridLayoutManager); if(mPictureAdapter == null){ //設置適配器
            mPictureAdapter = new PictureAdapter(this, mPictureBeansList); mRecyclerView.setAdapter(mPictureAdapter); //添加分割線 //設置添加刪除動畫 //調用ListView的setSelected(!ListView.isSelected())方法，這樣就能及時刷新佈局
            mRecyclerView.setSelected(true); }else{ mPictureAdapter.notifyDataSetChanged(); }
    }

    private void initEvents() {
        //圖片九宮格點擊事件
        mPictureAdapter.setOnItemClickLitener(new PictureAdapter.OnItemClickLitener() {
            @Override
            public void onItemClick(View v, int position) {
                //打開圖片預覽界面
                ArrayList<String> photos = (ArrayList<String>) mPictureAdapter.getAllPhotoPaths(); PhotoPreview.builder() .setPhotos(photos) .setCurrentItem(position) .setShowDeleteButton(false) .start(MainActivity.this);
            }

            @Override
            public void onItemAddClick() {
                PhotoPicker.builder() .setPhotoCount(mPictureAdapter.MAX) .setGridColumnCount(3) //.setSelected(selPhotosPath)
                        .start(MainActivity.this, Globals.CHOOSE_PIC_REQUEST_CODE);
            }
        });
    }

    @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); Log.w(TAG, "{onActivityResult}resultCode="+resultCode); Log.w(TAG, "{onActivityResult}requestCode="+requestCode); if (resultCode == Activity.RESULT_OK) { //選擇照片
            if(requestCode == Globals.CHOOSE_PIC_REQUEST_CODE){ if (data != null) { selPhotosPath = data.getStringArrayListExtra(PhotoPicker.KEY_SELECTED_PHOTOS); } if (selPhotosPath != null) { //下面的代碼主要用於這樣一個場景，就是註釋了.setSelected(selPhotosPath)以後，還想要保證選擇的圖片不重複
                    /*for(String path : selPhotosPath){ Log.w(TAG,"path="+path);///storage/emulated/0/tempHxzk/IMG_1498034535796.jpg boolean existThisPic = false; for(int i=0;i<mPictureBeansList.size();i++){ if(path.equals(mPictureBeansList.get(i).getPicPath())){ //若是新選擇的圖片集合中存在以前選中的圖片，那麼跳過去 existThisPic = true; break; } } if(! existThisPic){ PictureBean pictureBean = new PictureBean(); pictureBean.setPicPath(path); pictureBean.setPicName(getFileName(path)); //去掉總數目的限制，這裏經過增大MAX的數字來實現 if (mPictureBeansList.size() < mPictureAdapter.MAX) { mPictureBeansList.add(pictureBean); } else { Toast.makeText(MainActivity.this, "最多能夠選擇" + mPictureAdapter.MAX + "張圖片", Toast.LENGTH_SHORT).show(); break; } } }*/

                    //是常規操做，和上面的代碼不可共存
                    for (String path : selPhotosPath) { PictureBean pictureBean = new PictureBean(); pictureBean.setPicPath(path); pictureBean.setPicName(Globals.getFileName(path)); //去掉總數目的限制，這裏經過增大MAX的數字來實現
                        if (mPictureBeansList.size() < mPictureAdapter.MAX) { mPictureBeansList.add(pictureBean); } else { Toast.makeText(MainActivity.this, "最多能夠選擇" + mPictureAdapter.MAX + "張圖片", Toast.LENGTH_SHORT).show(); break; } } mPictureAdapter.notifyDataSetChanged(); } } } }
}

混淆配置

# PhotoPicker混淆
# Glide
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
    **[] $VALUES;
    public *;
}
# support-v7-appcompat
-keep public class android.support.v7.widget.** { *; }
-keep public class android.support.v7.internal.widget.** { *; }
-keep public class android.support.v7.internal.view.menu.** { *; }
-keep public class * extends android.support.v4.view.ActionProvider {
    public <init>(android.content.Context);
}
# support-design
-dontwarn android.support.design.**
-keep class android.support.design.** { *; }
-keep interface android.support.design.** { *; }
-keep public class android.support.design.R$* { *; }