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zhanglei
2025-06-30 14:12:14 +08:00
commit 8a60755b60
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ninegridview/src/main/AndroidManifest.xml
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<manifest
package="com.lzy.ninegrid"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<application>
<activity
android:name="com.lzy.ninegrid.preview.ImagePreviewActivity"
android:theme="@android:style/Theme.Translucent.NoTitleBar"/>
</application>
</manifest>
ninegridview/src/main/java/com/lzy/ninegrid/ImageInfo.java
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package com.lzy.ninegrid;
import java.io.Serializable;
/**
* ================================================
* 作 者：廖子尧
* 版 本：1.0
* 创建日期：2016/3/21
* 描 述：
* 修订历史：
* ================================================
*/
public class ImageInfo implements Serializable {
public String thumbnailUrl;
public String bigImageUrl;
public int imageViewHeight;
public int imageViewWidth;
public int imageViewX;
public int imageViewY;
public String getThumbnailUrl() {
if (thumbnailUrl==null||thumbnailUrl.length()==0) {
if (bigImageUrl!=null&&bigImageUrl.length()>0) {
return bigImageUrl;
}
}
return thumbnailUrl;
}
public void setThumbnailUrl(String thumbnailUrl) {
this.thumbnailUrl = thumbnailUrl;
}
public String getBigImageUrl() {
return bigImageUrl;
}
public void setBigImageUrl(String bigImageUrl) {
this.bigImageUrl = bigImageUrl;
}
public int getImageViewHeight() {
return imageViewHeight;
}
public void setImageViewHeight(int imageViewHeight) {
this.imageViewHeight = imageViewHeight;
}
public int getImageViewWidth() {
return imageViewWidth;
}
public void setImageViewWidth(int imageViewWidth) {
this.imageViewWidth = imageViewWidth;
}
public int getImageViewX() {
return imageViewX;
}
public void setImageViewX(int imageViewX) {
this.imageViewX = imageViewX;
}
public int getImageViewY() {
return imageViewY;
}
public void setImageViewY(int imageViewY) {
this.imageViewY = imageViewY;
}
@Override
public String toString() {
return "ImageInfo{" +
"imageViewY=" + imageViewY +
", imageViewX=" + imageViewX +
", imageViewWidth=" + imageViewWidth +
", imageViewHeight=" + imageViewHeight +
", bigImageUrl='" + bigImageUrl + '\'' +
", thumbnailUrl='" + thumbnailUrl + '\'' +
'}';
}
}
ninegridview/src/main/java/com/lzy/ninegrid/NineGridView.java
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package com.lzy.ninegrid;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import androidx.annotation.NonNull;
import java.util.ArrayList;
import java.util.List;
public class NineGridView extends ViewGroup {
public static final int MODE_FILL = 0; //填充模式，类似于微信
public static final int MODE_GRID = 1; //网格模式，类似于QQ，4张图会 2X2布局
private static ImageLoader mImageLoader; //全局的图片加载器(必须设置,否者不显示图片)
private int singleImageSize = 250; // 单张图片时的最大大小,单位dp
private float singleImageRatio = 1.0f; // 单张图片的宽高比(宽/高)
private int maxImageSize = 9; // 最大显示的图片数
private int gridSpacing = 3; // 宫格间距，单位dp
private int mode = MODE_FILL; // 默认使用fill模式
private int columnCount; // 列数
private int rowCount; // 行数
private int gridWidth; // 宫格宽度
private int gridHeight; // 宫格高度
private List<ImageView> imageViews;
private List<ImageInfo> mImageInfo;
private NineGridViewAdapter mAdapter;
public NineGridView(Context context) {
this(context, null);
}
public NineGridView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public NineGridView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
DisplayMetrics dm = context.getResources().getDisplayMetrics();
gridSpacing = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, gridSpacing, dm);
singleImageSize = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, singleImageSize, dm);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.NineGridView);
gridSpacing = (int) a.getDimension(R.styleable.NineGridView_ngv_gridSpacing, gridSpacing);
singleImageSize = a.getDimensionPixelSize(R.styleable.NineGridView_ngv_singleImageSize, singleImageSize);
singleImageRatio = a.getFloat(R.styleable.NineGridView_ngv_singleImageRatio, singleImageRatio);
maxImageSize = a.getInt(R.styleable.NineGridView_ngv_maxSize, maxImageSize);
mode = a.getInt(R.styleable.NineGridView_ngv_mode, mode);
a.recycle();
imageViews = new ArrayList<>();
}
public void setColumnCount(int columnCount) {
this.columnCount = columnCount;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = 0;
int totalWidth = width - getPaddingLeft() - getPaddingRight();
if (mImageInfo != null && mImageInfo.size() > 0) {
if (mImageInfo.size() == 1) {
gridWidth = singleImageSize > totalWidth ? totalWidth : singleImageSize;
gridHeight = (int) (gridWidth / singleImageRatio);
//矫正图片显示区域大小，不允许超过最大显示范围
if (gridHeight > singleImageSize) {
float ratio = singleImageSize * 1.0f / gridHeight;
gridWidth = (int) (gridWidth * ratio);
gridHeight = singleImageSize;
}
} else {
gridWidth = gridHeight = (totalWidth - gridSpacing * (columnCount - 1)) / columnCount;
// //这里无论是几张图片，宽高都按总宽度的 1/3
// gridWidth = gridHeight = (totalWidth - gridSpacing * 2) / 3;
}
width = gridWidth * columnCount + gridSpacing * (columnCount - 1) + getPaddingLeft() + getPaddingRight();
height = gridHeight * rowCount + gridSpacing * (rowCount - 1) + getPaddingTop() + getPaddingBottom();
}
setMeasuredDimension(width, height);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
if (mImageInfo == null) return;
int childrenCount = mImageInfo.size();
for (int i = 0; i < childrenCount; i++) {
ImageView childrenView = (ImageView) getChildAt(i);
int rowNum = i / columnCount;
int columnNum = i % columnCount;
int left = (gridWidth + gridSpacing) * columnNum + getPaddingLeft();
int top = (gridHeight + gridSpacing) * rowNum + getPaddingTop();
int right = left + gridWidth;
int bottom = top + gridHeight;
childrenView.layout(left, top, right, bottom);
if (mImageLoader != null) {
if (mImageInfo.get(i).thumbnailUrl!=null&&mImageInfo.get(i).thumbnailUrl.length()>0) {
mImageLoader.onDisplayImage(getContext(), childrenView, mImageInfo.get(i).thumbnailUrl);
}else{
mImageLoader.onDisplayImage(getContext(), childrenView, mImageInfo.get(i).bigImageUrl);
}
}
}
}
/** 设置适配器 */
public void setAdapter(@NonNull NineGridViewAdapter adapter) {
mAdapter = adapter;
List<ImageInfo> imageInfo = adapter.getImageInfo();
if (imageInfo == null || imageInfo.isEmpty()) {
setVisibility(GONE);
return;
} else {
setVisibility(VISIBLE);
}
int imageCount = imageInfo.size();
if (maxImageSize > 0 && imageCount > maxImageSize) {
imageInfo = imageInfo.subList(0, maxImageSize);
imageCount = imageInfo.size(); //再次获取图片数量
}
if(columnCount == 0){
columnCount = 3;
}
//默认是3列显示，行数根据图片的数量决定
rowCount = imageCount / columnCount + (imageCount % columnCount == 0 ? 0 : 1);
// columnCount = 3;
//grid模式下，显示4张使用2X2模式
if (mode == MODE_GRID) {
if (imageCount == 4) {
rowCount = 2;
columnCount = 2;
}
}
//保证View的复用，避免重复创建
if (mImageInfo == null) {
for (int i = 0; i < imageCount; i++) {
ImageView iv = getImageView(i);
if (iv == null) return;
addView(iv, generateDefaultLayoutParams());
}
} else {
int oldViewCount = mImageInfo.size();
int newViewCount = imageCount;
if (oldViewCount > newViewCount) {
removeViews(newViewCount, oldViewCount - newViewCount);
} else if (oldViewCount < newViewCount) {
for (int i = oldViewCount; i < newViewCount; i++) {
ImageView iv = getImageView(i);
if (iv == null) return;
addView(iv, generateDefaultLayoutParams());
}
}
}
//修改最后一个条目，决定是否显示更多
if (adapter.getImageInfo().size() > maxImageSize) {
View child = getChildAt(maxImageSize - 1);
if (child instanceof NineGridViewWrapper) {
NineGridViewWrapper imageView = (NineGridViewWrapper) child;
imageView.setMoreNum(adapter.getImageInfo().size() - maxImageSize);
}
}
mImageInfo = imageInfo;
requestLayout();
}
/** 获得 ImageView 保证了 ImageView 的重用 */
private ImageView getImageView(final int position) {
ImageView imageView;
if (position < imageViews.size()) {
imageView = imageViews.get(position);
} else {
imageView = mAdapter.generateImageView(getContext());
imageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mAdapter.onImageItemClick(getContext(), NineGridView.this, position, mAdapter.getImageInfo());
}
});
imageViews.add(imageView);
}
return imageView;
}
/** 设置宫格间距 */
public void setGridSpacing(int spacing) {
gridSpacing = spacing;
}
/** 设置只有一张图片时的宽 */
public void setSingleImageSize(int maxImageSize) {
singleImageSize = maxImageSize;
}
/** 设置只有一张图片时的宽高比 */
public void setSingleImageRatio(float ratio) {
singleImageRatio = ratio;
}
/** 设置最大图片数 */
public void setMaxSize(int maxSize) {
maxImageSize = maxSize;
}
public int getMaxSize() {
return maxImageSize;
}
public static void setImageLoader(ImageLoader imageLoader) {
mImageLoader = imageLoader;
}
public static ImageLoader getImageLoader() {
return mImageLoader;
}
public interface ImageLoader {
/**
* 需要子类实现该方法，以确定如何加载和显示图片,并且设置给NineGridView
*
* @param context 上下文
* @param imageView 需要展示图片的ImageView
* @param url 图片地址
*/
void onDisplayImage(Context context, ImageView imageView, String url);
/**
* @param url 图片的地址
* @return 当前框架的本地缓存图片
*/
Bitmap getCacheImage(String url);
}
}
ninegridview/src/main/java/com/lzy/ninegrid/NineGridViewAdapter.java
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package com.lzy.ninegrid;
import android.content.Context;
import android.widget.ImageView;
import java.io.Serializable;
import java.util.List;
public abstract class NineGridViewAdapter implements Serializable {
protected Context context;
private List<ImageInfo> imageInfo;
public NineGridViewAdapter(Context context, List<ImageInfo> imageInfo) {
this.context = context;
this.imageInfo = imageInfo;
}
/**
* 如果要实现图片点击的逻辑，重写此方法即可
*
* @param context 上下文
* @param nineGridView 九宫格控件
* @param index 当前点击图片的的索引
* @param imageInfo 图片地址的数据集合
*/
protected void onImageItemClick(Context context, NineGridView nineGridView, int index, List<ImageInfo> imageInfo) {
}
/**
* 生成ImageView容器的方式，默认使用NineGridImageViewWrapper类，即点击图片后，图片会有蒙板效果
* 如果需要自定义图片展示效果，重写此方法即可
*
* @param context 上下文
* @return 生成的 ImageView
*/
protected ImageView generateImageView(Context context) {
NineGridViewWrapper imageView = new NineGridViewWrapper(context);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setImageResource(R.drawable.ic_default_color);
return imageView;
}
public List<ImageInfo> getImageInfo() {
return imageInfo;
}
public void setImageInfoList(List<ImageInfo> imageInfo) {
this.imageInfo = imageInfo;
}
}
ninegridview/src/main/java/com/lzy/ninegrid/NineGridViewWrapper.java
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package com.lzy.ninegrid;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.widget.ImageView;
import androidx.core.view.ViewCompat;
public class NineGridViewWrapper extends ImageView {
private int moreNum = 0; //显示更多的数量
private int maskColor = 0x88000000; //默认的遮盖颜色
private float textSize = 35; //显示文字的大小单位sp
private int textColor = 0xFFFFFFFF; //显示文字的颜色
private TextPaint textPaint; //文字的画笔
private String msg = ""; //要绘制的文字
public NineGridViewWrapper(Context context) {
this(context, null);
}
public NineGridViewWrapper(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public NineGridViewWrapper(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
//转化单位
textSize = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, textSize, getContext().getResources().getDisplayMetrics());
textPaint = new TextPaint();
textPaint.setTextAlign(Paint.Align.CENTER); //文字居中对齐
textPaint.setAntiAlias(true); //抗锯齿
textPaint.setTextSize(textSize); //设置文字大小
textPaint.setColor(textColor); //设置文字颜色
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (moreNum > 0) {
canvas.drawColor(maskColor);
float baseY = getHeight() / 2 - (textPaint.ascent() + textPaint.descent()) / 2;
canvas.drawText(msg, getWidth() / 2, baseY, textPaint);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Drawable drawable = getDrawable();
if (drawable != null) {
/**
* 默认情况下，所有的从同一资源（R.drawable.XXX）加载来的drawable实例都共享一个共用的状态，
* 如果你更改一个实例的状态，其他所有的实例都会收到相同的通知。
* 使用使 mutate 可以让这个drawable变得状态不定。这个操作不能还原（变为不定后就不能变为原来的状态）。
* 一个状态不定的drawable可以保证它不与其他任何一个drawabe共享它的状态。
* 此处应该是要使用的 mutate()，但是在部分手机上会出现点击后变白的现象，所以没有使用
* 目前这种解决方案没有问题
*/
// drawable.mutate().setColorFilter(Color.GRAY, PorterDuff.Mode.MULTIPLY);
drawable.setColorFilter(Color.GRAY, PorterDuff.Mode.MULTIPLY);
ViewCompat.postInvalidateOnAnimation(this);
}
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
Drawable drawableUp = getDrawable();
if (drawableUp != null) {
// drawableUp.mutate().clearColorFilter();
drawableUp.clearColorFilter();
ViewCompat.postInvalidateOnAnimation(this);
}
break;
}
return super.onTouchEvent(event);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
setImageDrawable(null);
}
public int getMoreNum() {
return moreNum;
}
public void setMoreNum(int moreNum) {
this.moreNum = moreNum;
msg = "+" + moreNum;
invalidate();
}
public int getMaskColor() {
return maskColor;
}
public void setMaskColor(int maskColor) {
this.maskColor = maskColor;
invalidate();
}
public float getTextSize() {
return textSize;
}
public void setTextSize(float textSize) {
this.textSize = textSize;
textPaint.setTextSize(textSize);
invalidate();
}
public int getTextColor() {
return textColor;
}
public void setTextColor(int textColor) {
this.textColor = textColor;
textPaint.setColor(textColor);
invalidate();
}
}
ninegridview/src/main/java/com/lzy/ninegrid/preview/HackyViewPager.java
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package com.lzy.ninegrid.preview;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import androidx.viewpager.widget.ViewPager;
/** 修复图片在ViewPager控件中缩放报错的BUG */
public class HackyViewPager extends ViewPager {
public HackyViewPager(Context context) {
super(context);
}
public HackyViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
try {
return super.onTouchEvent(ev);
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
}
return false;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
try {
return super.onInterceptTouchEvent(ev);
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
}
return false;
}
}
ninegridview/src/main/java/com/lzy/ninegrid/preview/ImagePreviewActivity.java
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package com.lzy.ninegrid.preview;
import android.animation.Animator;
import android.animation.ValueAnimator;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import androidx.viewpager.widget.ViewPager;
import com.lzy.ninegrid.ImageInfo;
import com.lzy.ninegrid.R;
import java.util.List;
public class ImagePreviewActivity extends Activity implements ViewTreeObserver.OnPreDrawListener {
public static final String IMAGE_INFO = "IMAGE_INFO";
public static final String CURRENT_ITEM = "CURRENT_ITEM";
public static final int ANIMATE_DURATION = 200;
private RelativeLayout rootView;
private ImagePreviewAdapter imagePreviewAdapter;
private List<ImageInfo> imageInfo;
private int currentItem;
private int imageHeight;
private int imageWidth;
private int screenWidth;
private int screenHeight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_preview);
ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);
final TextView tv_pager = (TextView) findViewById(R.id.tv_pager);
rootView = (RelativeLayout) findViewById(R.id.rootView);
DisplayMetrics metric = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metric);
screenWidth = metric.widthPixels;
screenHeight = metric.heightPixels;
Intent intent = getIntent();
imageInfo = (List<ImageInfo>) intent.getSerializableExtra(IMAGE_INFO);
currentItem = intent.getIntExtra(CURRENT_ITEM, 0);
imagePreviewAdapter = new ImagePreviewAdapter(this, imageInfo);
viewPager.setAdapter(imagePreviewAdapter);
viewPager.setCurrentItem(currentItem);
viewPager.getViewTreeObserver().addOnPreDrawListener(this);
viewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
currentItem = position;
tv_pager.setText(String.format(getString(R.string.select), currentItem + 1, imageInfo.size()));
}
});
tv_pager.setText(String.format(getString(R.string.select), currentItem + 1, imageInfo.size()));
}
@Override
public void onBackPressed() {
finishActivityAnim();
}
/** 绘制前开始动画 */
@Override
public boolean onPreDraw() {
rootView.getViewTreeObserver().removeOnPreDrawListener(this);
final View view = imagePreviewAdapter.getPrimaryItem();
final ImageView imageView = imagePreviewAdapter.getPrimaryImageView();
computeImageWidthAndHeight(imageView);
final ImageInfo imageData = imageInfo.get(currentItem);
final float vx = imageData.imageViewWidth * 1.0f / imageWidth;
final float vy = imageData.imageViewHeight * 1.0f / imageHeight;
ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, 1.0f);
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
long duration = animation.getDuration();
long playTime = animation.getCurrentPlayTime();
float fraction = duration > 0 ? (float) playTime / duration : 1f;
if (fraction > 1) fraction = 1;
view.setTranslationX(evaluateInt(fraction, imageData.imageViewX + imageData.imageViewWidth / 2 - imageView.getWidth() / 2, 0));
view.setTranslationY(evaluateInt(fraction, imageData.imageViewY + imageData.imageViewHeight / 2 - imageView.getHeight() / 2, 0));
view.setScaleX(evaluateFloat(fraction, vx, 1));
view.setScaleY(evaluateFloat(fraction, vy, 1));
view.setAlpha(fraction);
rootView.setBackgroundColor(evaluateArgb(fraction, Color.TRANSPARENT, Color.BLACK));
}
});
addIntoListener(valueAnimator);
valueAnimator.setDuration(ANIMATE_DURATION);
valueAnimator.start();
return true;
}
/** activity的退场动画 */
public void finishActivityAnim() {
final View view = imagePreviewAdapter.getPrimaryItem();
final ImageView imageView = imagePreviewAdapter.getPrimaryImageView();
computeImageWidthAndHeight(imageView);
final ImageInfo imageData = imageInfo.get(currentItem);
final float vx = imageData.imageViewWidth * 1.0f / imageWidth;
final float vy = imageData.imageViewHeight * 1.0f / imageHeight;
final ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, 1.0f);
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
long duration = animation.getDuration();
long playTime = animation.getCurrentPlayTime();
float fraction = duration > 0 ? (float) playTime / duration : 1f;
if (fraction > 1) fraction = 1;
view.setTranslationX(evaluateInt(fraction, 0, imageData.imageViewX + imageData.imageViewWidth / 2 - imageView.getWidth() / 2));
view.setTranslationY(evaluateInt(fraction, 0, imageData.imageViewY + imageData.imageViewHeight / 2 - imageView.getHeight() / 2));
view.setScaleX(evaluateFloat(fraction, 1, vx));
view.setScaleY(evaluateFloat(fraction, 1, vy));
view.setAlpha(1 - fraction);
rootView.setBackgroundColor(evaluateArgb(fraction, Color.BLACK, Color.TRANSPARENT));
}
});
addOutListener(valueAnimator);
valueAnimator.setDuration(ANIMATE_DURATION);
valueAnimator.start();
}
/** 计算图片的宽高 */
private void computeImageWidthAndHeight(ImageView imageView) {
// 获取真实大小
Drawable drawable = imageView.getDrawable();
int intrinsicHeight = drawable.getIntrinsicHeight();
int intrinsicWidth = drawable.getIntrinsicWidth();
// 计算出与屏幕的比例，用于比较以宽的比例为准还是高的比例为准，因为很多时候不是高度没充满，就是宽度没充满
float h = screenHeight * 1.0f / intrinsicHeight;
float w = screenWidth * 1.0f / intrinsicWidth;
if (h > w) h = w;
else w = h;
// 得出当宽高至少有一个充满的时候图片对应的宽高
imageHeight = (int) (intrinsicHeight * h);
imageWidth = (int) (intrinsicWidth * w);
}
/** 进场动画过程监听 */
private void addIntoListener(ValueAnimator valueAnimator) {
valueAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
rootView.setBackgroundColor(0x0);
}
@Override
public void onAnimationEnd(Animator animation) {
}
@Override
public void onAnimationCancel(Animator animation) {
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
}
/** 退场动画过程监听 */
private void addOutListener(ValueAnimator valueAnimator) {
valueAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
rootView.setBackgroundColor(0x0);
}
@Override
public void onAnimationEnd(Animator animation) {
finish();
overridePendingTransition(0, 0);
}
@Override
public void onAnimationCancel(Animator animation) {
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
}
/** Integer 估值器 */
public Integer evaluateInt(float fraction, Integer startValue, Integer endValue) {
int startInt = startValue;
return (int) (startInt + fraction * (endValue - startInt));
}
/** Float 估值器 */
public Float evaluateFloat(float fraction, Number startValue, Number endValue) {
float startFloat = startValue.floatValue();
return startFloat + fraction * (endValue.floatValue() - startFloat);
}
/** Argb 估值器 */
public int evaluateArgb(float fraction, int startValue, int endValue) {
int startA = (startValue >> 24) & 0xff;
int startR = (startValue >> 16) & 0xff;
int startG = (startValue >> 8) & 0xff;
int startB = startValue & 0xff;
int endA = (endValue >> 24) & 0xff;
int endR = (endValue >> 16) & 0xff;
int endG = (endValue >> 8) & 0xff;
int endB = endValue & 0xff;
return (startA + (int) (fraction * (endA - startA))) << 24//
| (startR + (int) (fraction * (endR - startR))) << 16//
| (startG + (int) (fraction * (endG - startG))) << 8//
| (startB + (int) (fraction * (endB - startB)));
}
}
ninegridview/src/main/java/com/lzy/ninegrid/preview/ImagePreviewAdapter.java
+128
View File
@@ -0,0 +1,128 @@
package com.lzy.ninegrid.preview;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ProgressBar;
import androidx.annotation.NonNull;
import androidx.viewpager.widget.PagerAdapter;
import com.lzy.ninegrid.ImageInfo;
import com.lzy.ninegrid.NineGridView;
import com.lzy.ninegrid.R;
import java.util.List;
import uk.co.senab.photoview.PhotoView;
import uk.co.senab.photoview.PhotoViewAttacher;
/**
* ================================================
* 作 者：廖子尧
* 版 本：1.0
* 创建日期：2016/3/21
* 描 述：
* 修订历史：
* ================================================
*/
public class ImagePreviewAdapter extends PagerAdapter implements PhotoViewAttacher.OnPhotoTapListener {
private List<ImageInfo> imageInfo;
private Context context;
private View currentView;
public ImagePreviewAdapter(Context context, @NonNull List<ImageInfo> imageInfo) {
super();
this.imageInfo = imageInfo;
this.context = context;
}
@Override
public int getCount() {
return imageInfo.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
@Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
super.setPrimaryItem(container, position, object);
currentView = (View) object;
}
public View getPrimaryItem() {
return currentView;
}
public ImageView getPrimaryImageView() {
return (ImageView) currentView.findViewById(R.id.pv);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
View view = LayoutInflater.from(context).inflate(R.layout.item_photoview, container, false);
final ProgressBar pb = (ProgressBar) view.findViewById(R.id.pb);
final PhotoView imageView = (PhotoView) view.findViewById(R.id.pv);
ImageInfo info = this.imageInfo.get(position);
imageView.setOnPhotoTapListener(this);
showExcessPic(info, imageView);
//如果需要加载的loading,需要自己改写,不能使用这个方法
NineGridView.getImageLoader().onDisplayImage(view.getContext(), imageView, info.bigImageUrl);
// pb.setVisibility(View.VISIBLE);
// Glide.with(context).load(info.bigImageUrl)//
// .placeholder(R.drawable.ic_default_image)//
// .error(R.drawable.ic_default_image)//
// .diskCacheStrategy(DiskCacheStrategy.ALL)//
// .listener(new RequestListener<String, GlideDrawable>() {
// @Override
// public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
// pb.setVisibility(View.GONE);
// return false;
// }
//
// @Override
// public boolean onResourceReady(GlideDrawable resource, String model, Target<GlideDrawable> target, boolean isFromMemoryCache, boolean isFirstResource) {
// pb.setVisibility(View.GONE);
// return false;
// }
// }).into(imageView);
container.addView(view);
return view;
}
/** 展示过度图片 */
private void showExcessPic(ImageInfo imageInfo, PhotoView imageView) {
//先获取大图的缓存图片
Bitmap cacheImage = NineGridView.getImageLoader().getCacheImage(imageInfo.bigImageUrl);
//如果大图的缓存不存在,在获取小图的缓存
if (cacheImage == null) cacheImage = NineGridView.getImageLoader().getCacheImage(imageInfo.thumbnailUrl);
//如果没有任何缓存,使用默认图片,否者使用缓存
if (cacheImage == null) {
imageView.setImageResource(R.drawable.ic_default_color);
} else {
imageView.setImageBitmap(cacheImage);
}
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
/** 单击屏幕关闭 */
@Override
public void onPhotoTap(View view, float x, float y) {
((ImagePreviewActivity) context).finishActivityAnim();
}
}
ninegridview/src/main/java/com/lzy/ninegrid/preview/NineGridViewClickAdapter.java
+77
View File
@@ -0,0 +1,77 @@
package com.lzy.ninegrid.preview;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import com.lzy.ninegrid.ImageInfo;
import com.lzy.ninegrid.NineGridView;
import com.lzy.ninegrid.NineGridViewAdapter;
import java.io.Serializable;
import java.util.List;
/**
* ================================================
* 作 者：廖子尧
* 版 本：1.0
* 创建日期：2016/3/21
* 描 述：
* 修订历史：
* ================================================
*/
public class NineGridViewClickAdapter extends NineGridViewAdapter {
private int statusHeight;
public NineGridViewClickAdapter(Context context, List<ImageInfo> imageInfo) {
super(context, imageInfo);
statusHeight = getStatusHeight(context);
}
@Override
protected void onImageItemClick(Context context, NineGridView nineGridView, int index, List<ImageInfo> imageInfo) {
for (int i = 0; i < imageInfo.size(); i++) {
ImageInfo info = imageInfo.get(i);
View imageView;
if (i < nineGridView.getMaxSize()) {
imageView = nineGridView.getChildAt(i);
} else {
//如果图片的数量大于显示的数量，则超过部分的返回动画统一退回到最后一个图片的位置
imageView = nineGridView.getChildAt(nineGridView.getMaxSize() - 1);
}
info.imageViewWidth = imageView.getWidth();
info.imageViewHeight = imageView.getHeight();
int[] points = new int[2];
imageView.getLocationInWindow(points);
info.imageViewX = points[0];
info.imageViewY = points[1] - statusHeight;
}
Intent intent = new Intent(context, ImagePreviewActivity.class);
Bundle bundle = new Bundle();
bundle.putSerializable(ImagePreviewActivity.IMAGE_INFO, (Serializable) imageInfo);
bundle.putInt(ImagePreviewActivity.CURRENT_ITEM, index);
intent.putExtras(bundle);
context.startActivity(intent);
((Activity) context).overridePendingTransition(0, 0);
}
/**
* 获得状态栏的高度
*/
public int getStatusHeight(Context context) {
int statusHeight = -1;
try {
Class<?> clazz = Class.forName("com.android.internal.R$dimen");
Object object = clazz.newInstance();
int height = Integer.parseInt(clazz.getField("status_bar_height").get(object).toString());
statusHeight = context.getResources().getDimensionPixelSize(height);
} catch (Exception e) {
e.printStackTrace();
}
return statusHeight;
}
}
ninegridview/src/main/res/drawable/ic_default_color.xml
+5
View File
@@ -0,0 +1,5 @@
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="@color/ic_default_bg_color"/>
</shape>
ninegridview/src/main/res/layout/activity_preview.xml
+23
View File
@@ -0,0 +1,23 @@
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/rootView"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.lzy.ninegrid.preview.HackyViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<TextView
android:id="@+id/tv_pager"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="20dp"
android:text="1/4"
android:textColor="#ffffff"
android:textSize="20sp"/>
</RelativeLayout>
ninegridview/src/main/res/layout/item_photoview.xml
+18
View File
@@ -0,0 +1,18 @@
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<uk.co.senab.photoview.PhotoView
android:id="@+id/pv"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<ProgressBar
android:id="@+id/pb"
style="@style/Widget.AppCompat.ProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:visibility="gone"/>
</FrameLayout>
ninegridview/src/main/res/values/attrs.xml
+13
View File
@@ -0,0 +1,13 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="NineGridView">
<attr name="ngv_singleImageSize" format="dimension"/>
<attr name="ngv_singleImageRatio" format="float"/>
<attr name="ngv_gridSpacing" format="dimension"/>
<attr name="ngv_maxSize" format="integer"/>
<attr name="ngv_mode" format="enum">
<enum name="fill" value="0"/>
<enum name="grid" value="1"/>
</attr>
</declare-styleable>
</resources>
ninegridview/src/main/res/values/colors.xml
+4
View File
@@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="ic_default_bg_color">#33000000</color>
</resources>
ninegridview/src/main/res/values/strings.xml
+4
View File
@@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="select">%1$s/%2$s</string>
</resources>