标签:Android,Studio,圆形头像
本文实例为大家分享了Android Studio实现带边框的圆形头像的具体代码,供大家参考,具体内容如下
效果显示:
(没有边框的)
(有边框的)
1、创建自定义ImagView控件
(1)、没有边框的
package chenglong.activitytest.pengintohospital.utils;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;
/**
*
* 圆形图片
* Created by LICHENGLONG on 2017-10-09.
*/
public class mine_ImageViewPlus extends ImageView{
private Paint mPaintBitmap = new Paint(Paint.ANTI_ALIAS_FLAG);
private Paint mPaintBorder = new Paint(Paint.ANTI_ALIAS_FLAG);
private Bitmap mRawBitmap;
private BitmapShader mShader;
private Matrix mMatrix = new Matrix();
private float mBorderWidth = dip2px(15);
private int mBorderColor = 0x80bebebe;
public mine_ImageViewPlus(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onDraw(Canvas canvas) {
Bitmap rawBitmap = getBitmap(getDrawable());
if (rawBitmap != null){
int viewWidth = getWidth();
int viewHeight = getHeight();
int viewMinSize = Math.min(viewWidth, viewHeight);
float dstWidth = viewMinSize;
float dstHeight = viewMinSize;
if (mShader == null || !rawBitmap.equals(mRawBitmap)){
mRawBitmap = rawBitmap;
mShader = new BitmapShader(mRawBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
}
if (mShader != null){
mMatrix.setScale((dstWidth - mBorderWidth * 2) / rawBitmap.getWidth(), (dstHeight - mBorderWidth * 2) / rawBitmap.getHeight());
mShader.setLocalMatrix(mMatrix);
}
mPaintBitmap.setShader(mShader);
mPaintBorder.setStyle(Paint.Style.STROKE);
mPaintBorder.setStrokeWidth(mBorderWidth);
mPaintBorder.setColor(mBorderColor);
float radius = viewMinSize / 2.0f;
canvas.drawCircle(radius, radius, radius - mBorderWidth / 2.0f, mPaintBorder);
canvas.translate(mBorderWidth, mBorderWidth);
canvas.drawCircle(radius - mBorderWidth, radius - mBorderWidth, radius - mBorderWidth, mPaintBitmap);
} else {
super.onDraw(canvas);
}
}
private Bitmap getBitmap(Drawable drawable){
if (drawable instanceof BitmapDrawable){
return ((BitmapDrawable)drawable).getBitmap();
} else if (drawable instanceof ColorDrawable){
Rect rect = drawable.getBounds();
int width = rect.right - rect.left;
int height = rect.bottom - rect.top;
int color = ((ColorDrawable)drawable).getColor();
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawARGB(Color.alpha(color), Color.red(color), Color.green(color), Color.blue(color));
return bitmap;
} else {
return null;
}
}
private int dip2px(int dipVal) {
float scale = getResources().getDisplayMetrics().density;
return (int)(dipVal * scale + 0.5f);
}
}
(2)、有边框的
package chenglong.activitytest.pengintohospital.utils;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;
/**
*
* 带边框的圆形图片
* Created by LICHENGLONG on 2017-10-09.
*/
public class ImageViewPlus extends ImageView{
private Paint mPaintBitmap = new Paint(Paint.ANTI_ALIAS_FLAG);
private Paint mPaintBorder = new Paint(Paint.ANTI_ALIAS_FLAG);//
private Bitmap mRawBitmap;
private BitmapShader mShader;
private Matrix mMatrix = new Matrix();
private float mBorderWidth = dip2px(15);
private int mBorderColor = 0xFF0080FF;//外边框的颜色
public ImageViewPlus(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onDraw(Canvas canvas) {
Bitmap rawBitmap = getBitmap(getDrawable());
if (rawBitmap != null){
int viewWidth = getWidth();
int viewHeight = getHeight();
int viewMinSize = Math.min(viewWidth, viewHeight);
float dstWidth = viewMinSize;
float dstHeight = viewMinSize;
if (mShader == null || !rawBitmap.equals(mRawBitmap)){
mRawBitmap = rawBitmap;
mShader = new BitmapShader(mRawBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
}
if (mShader != null){
mMatrix.setScale((dstWidth - mBorderWidth * 2) / rawBitmap.getWidth(), (dstHeight - mBorderWidth * 2) / rawBitmap.getHeight());
mShader.setLocalMatrix(mMatrix);
}
mPaintBitmap.setShader(mShader);
mPaintBorder.setStyle(Paint.Style.STROKE);
mPaintBorder.setStrokeWidth(mBorderWidth / 5.0f);//外边框的大小
mPaintBorder.setColor(mBorderColor);//添加外边框
float radius = viewMinSize / 2.0f;
canvas.drawCircle(radius, radius, radius - mBorderWidth / 6.0f, mPaintBorder);
canvas.translate(mBorderWidth, mBorderWidth);
canvas.drawCircle(radius - mBorderWidth, radius - mBorderWidth, radius, mPaintBitmap);
} else {
super.onDraw(canvas);
}
}
private Bitmap getBitmap(Drawable drawable){
if (drawable instanceof BitmapDrawable){
return ((BitmapDrawable)drawable).getBitmap();
} else if (drawable instanceof ColorDrawable){
Rect rect = drawable.getBounds();
int width = rect.right - rect.left;
int height = rect.bottom - rect.top;
int color = ((ColorDrawable)drawable).getColor();
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawARGB(Color.alpha(color), Color.red(color), Color.green(color), Color.blue(color));
return bitmap;
} else {
return null;
}
}
private int dip2px(int dipVal) {
float scale = getResources().getDisplayMetrics().density;
return (int)(dipVal * scale + 0.5f);
}
}
2、创建页面xml代码
<chenglong.activitytest.pengintohospital.utils.ImageViewPlus
android:id="@+id/mine_iv_headportrait"
android:layout_width="150dp"
android:layout_height="150dp"
android:src="@mipmap/hospital" />
来源:http://blog.csdn.net/qq_39189632/article/details/78219912
0
投稿
猜你喜欢
- 经测试,是环绕通知改变了返回值,切面方法需要有返回值,来代替被代理方法返回结果改成如下即可:@Around("point_upda
- 本文使用SpringBoot结合Redis进行简单的token鉴权。1.简介刚刚换了公司,所以最近有些忙碌,所以一直没有什么产出,最近朋友问
- 1、try with catch还记得这样的代码吗?我们需要手动的关闭资源的流,不然会造成资源泄漏,因为虚拟机无法管理系统资源的关闭,必须手
- FTP简介文件传输协议(File Transfer Protocol,FTP)是用于在网络上进行文件传输的一套标准协议,它工作在 OSI 模
- 一、实现MyBatis ID构建接口@Slf4j@Componentpublic class CustomIdGenerator imple
- 可能导致问题的原因:1.nacos中的配置文件名不规范,官网有命名规则:“前缀”-&ldqu
- 今天研究了一下scope的作用域。默认是单例模式,即scope="singleton"。另外scope还有prototy
- 微信跳一跳辅助的Java具体实现代码,供大家参考,具体内容如下1.参考知乎教你用Python来玩微信跳一跳,鉴于本人Python一直都是半吊
- 在微服务架构下,我们在完成一个订单流程时经常遇到下面的场景:一个订单创建接口,第一次调用超时了,然后调用方重试了一次在订单创建时,我们需要去
- 本文实例讲述了C# WinForm控件对透明图片重叠时出现图片不透明的简单解决方法。分享给大家供大家参考,具体如下:在Winform中如果将
- Bitmap (android.graphics.Bitmap)Bitmap是Android系统中的图像处理的最重要类之一。用它可以获取图像
- java 多线程死锁 相信有过多线程编程经验的朋友,都吃过死锁的苦。除非你不使用多线程,否则死锁的可能性会一直存在。为什么会出现
- 比如我创建一个Kotlin Object类:ObjectMethodpackage com.baichuan.example.unit_te
- ArrayList底层实现是数组,访问元素效率高 (查询快,插入、修改、删除元素慢)与LinkedList相比,它效率高,但线程不安全。Ar
- Mybatis plus中like查询问题又谈到了Mybatis plus了,真的很是痛心疾首,在做模糊查询的时候出现了一个问题,版本还是2
- 在用C#开发Web应用时有个痛点,就是本机用VS开启Web应用调试时外部机器无法访问此Web应用。这里将会介绍如何通过设置允许局域网和外网机
- 本文实例为大家分享了Java Socket实现多人聊天系统的具体代码,供大家参考,具体内容如下前言GitHub地址开发环境:Eclipse
- 归并排序里运用到算法里很重要的一个思想——分治法:将原问题分解为几个规模较小但类似于原问题的子问题——《算法导论》。在每一层递归中都有3个步
- 1.基本语法key: value;kv之间有空格大小写敏感使用缩进表示层级关系缩进不允许使用tab,只允许空格缩进的空格数不重要,只要相同层
- 本文为大家分享了Java多线程实现Runnable方式的具体方法,供大家参考,具体内容如下(一)步骤 1.定义实现Runnable