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android 如何把图片设置成圆 Android 设置圆形图片 设置圆角图片

时间:2021-04-03 10:07:31

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android 如何把图片设置成圆 Android 设置圆形图片 设置圆角图片

这些其实很简单,在项目里调用这两个代码就行了。但是圆角图片还是有点小坑(有的图片设置过后不是圆角图片,可能是每个人上传的图片尺寸长宽比例不是合适的值),不过我已经解决了。下面就来看看怎么用的吧

先上一个效果图:

首先要下载glide jar包

下载链接:glide jia包 密码:pk8n

1.圆角图片

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 tongshoujun on /9/12.

* 圆角形图

*/

public classGlideRoundTransformextendsBitmapTransformation {

private static floatradius=0f;

publicGlideRoundTransform(Context context) {

this(context,4);

}

publicGlideRoundTransform(Context context, intdp) {

super(context);

this.radius= Resources.getSystem().getDisplayMetrics().density* dp;

}

@Override

protected Bitmaptransform(BitmapPool pool,Bitmap toTransform, intoutWidth, intoutHeight) {

returnroundCrop(pool,toTransform);

}

private staticBitmaproundCrop(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 =newCanvas(result);

Paint paint =newPaint();

paint.setShader(newBitmapShader(source,BitmapShader.TileMode.CLAMP,BitmapShader.TileMode.CLAMP));

paint.setAntiAlias(true);

RectF rectF =newRectF(0f,0f,source.getWidth(),source.getHeight());

//设置圆角弧度

canvas.drawRoundRect(rectF,radius,radius,paint);

returnresult;

}

@Override

public StringgetId() {

returngetClass().getName() + Math.round(radius);

}

}

这是我的使用,我就不过多解释(10就是你要设置圆角弧度的度数),如果你要使用,请改成你想要的。

2.圆形图片

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 tongshoujun on /9/12.

* 圆形图

*/

public class GlideCircleTransformextendsBitmapTransformation {

public GlideCircleTransform(Context context) {

super(context);

}

@Override

protected Bitmaptransform(BitmapPool pool,Bitmap toTransform, intoutWidth, intoutHeight) {

returncircleCrop(pool,toTransform);

}

private static BitmapcircleCrop(BitmapPool pool,Bitmap source) {

if(source ==null)return null;

intsize = Math.min(source.getWidth(),source.getHeight());

intx = (source.getWidth() - size) /2;

inty = (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 =newCanvas(result);

Paint paint =newPaint();

paint.setShader(newBitmapShader(squared,BitmapShader.TileMode.CLAMP,BitmapShader.TileMode.CLAMP));

paint.setAntiAlias(true);

floatr = size /2f;

canvas.drawCircle(r,r,r,paint);

returnresult;

}

@Override

public StringgetId() {

returngetClass().getName();

}

}

使用结果:

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