ImageView 中带圆角的位图 [英] Bitmap in ImageView with rounded corners

问题描述

我有一个 ImageView，我想用圆角制作它.

I have an ImageView and I want to make it with rounded corners.

我用这个:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> 
    <solid  android:color="@null"/>    

    <stroke android:width="1dp"
            android:color="#ff000000"/>


    <corners android:radius="62px"/> 
</shape>

并将此代码设置为我的图像视图的背景.它可以工作，但是我放在 ImageView 上的 src 图像超出了边界，并且不能适应新的形状.

And set this code as background of my imageview. It works, but the src image that I put on the ImageView is going out of the borders and doesn't adapt itself into the new shape.

我该如何解决问题?

推荐答案

试试这个:

public class CustomImageView extends ImageView {

    public static float radius = 18.0f;  

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

    public CustomImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        //float radius = 36.0f;  
        Path clipPath = new Path();
        RectF rect = new RectF(0, 0, this.getWidth(), this.getHeight());
        clipPath.addRoundRect(rect, radius, radius, Path.Direction.CW);
        canvas.clipPath(clipPath);
        super.onDraw(canvas);
    }
}

和

<your.pack.name.CustomImageView
                android:id="@+id/selectIcon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:scaleType="centerCrop" />

CustomImageView  iconImage = (CustomImageView )findViewById(R.id.selectIcon);
iconImage.setImageBitmap(bitmap);

或者，

ImageView iv= new CustomImageView(this);
iv.setImageResource(R.drawable.pic);

这篇关于ImageView 中带圆角的位图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！