【工具】Glide基本使用方法说明与圆角图片工具

添加依赖

dependencies{
compile'com.github.bumptech.glide:glide:3.7.0'}

网络权限

<uses-permission android:name="android.permission.INTERNET" />

将图片转化为圆形

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

/**
* Created by huruihua on 2017/3/14.
* 将图片转化为圆形
*/

public class GlideCircleTransform  extends BitmapTransformation{

public GlideCircleTransform(Context context) {
super(context);
}

@Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
return circleCrop(pool, toTransform);
}

private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
if (source == null) return null;

int size = Math.min(source.getWidth(), source.getHeight());
int x = (source.getWidth() - size) / 2;
int y = (source.getHeight() - size) / 2;

// TODO this could be acquired from the pool too
Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);

Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
if (result == null) {
result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
}

Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
float r = size / 2f;
canvas.drawCircle(r, r, r, paint);
return result;
}

@Override public String getId() {
return getClass().getName();
}
}

将图片转化为圆角

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

/**
* Created by huruihua on 2017/3/14.
*
* 将图片转化为圆角
* 构造中第二个参数定义半径
*/

public class GlideRoundTransform extends BitmapTransformation {
private static float radius = 0f;

public GlideRoundTransform(Context context) {
this(context, 4);
}

public GlideRoundTransform(Context context, int dp) {
super(context);
this.radius = Resources.getSystem().getDisplayMetrics().density * dp;
}

@Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
return roundCrop(pool, toTransform);
}

private static Bitmap roundCrop(BitmapPool pool, Bitmap source) {
if (source == null) return null;

Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
if (result == null) {
result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
}

Canvas canvas = new Canvas(result);
Paint paint = new Paint();
paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
paint.setAntiAlias(true);
RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
canvas.drawRoundRect(rectF, radius, radius, paint);
return result;
}

@Override public String getId() {
return getClass().getName() + Math.round(radius);
}
}

使用

import android.content.Context;
import android.widget.ImageView;

import com.bumptech.glide.Glide;

/**
* Created by huruihua on 2017/3/14.
*/

public class GlideImgManager {

/**
* load normal  for img
*
* @param url
* @param erroImg
* @param emptyImg
* @param iv
*/
public static void glideLoader(Context context, String url, int erroImg, int emptyImg, ImageView iv) {
//原生 API
Glide.with(context).load(url).placeholder(emptyImg).error(erroImg).into(iv);
}

/**
* load normal  for  circle or round img
*
* @param url
* @param erroImg   失败
* @param emptyImg  占位图
* @param iv
* @param tag   0 圆形图片  1 圆角图片
*/
public static void glideLoader(Context context, String url, int erroImg, int emptyImg, ImageView iv, int tag) {
if (0 == tag) {
Glide.with(context).load(url).placeholder(emptyImg).error(erroImg).transform(new GlideCircleTransform(context)).into(iv);
} else if (1 == tag) {
Glide.with(context).load(url).placeholder(emptyImg).error(erroImg).transform(new GlideRoundTransform(context,10)).into(iv);
}
}
}