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android中的一个圆角图片

时间:2015-08-28 12:41:06      阅读:277      评论:0      收藏:0      [点我收藏+]

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RoundedImageView

 

A fast ImageView (and Drawable) that supports rounded corners (and ovals or circles) based on the original example from Romain Guy. RoundedImageView is a full superset of CircleImageView (which is actually just a subset based on this lib) with many more advanced features like support for ovals, rounded rectangles, ScaleTypes and TileModes.

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There are many ways to create rounded corners in android, but this is the fastest and best one that I know of because it:

  • does not create a copy of the original bitmap
  • does not use a clipPath which is not hardware accelerated and not anti-aliased.
  • does not use setXfermode to clip the bitmap and draw twice to the canvas.

If you know of a better method, let me know (or even better open a pull request)!

Also has proper support for:

  • Borders (with Colors and ColorStateLists)
  • Ovals and Circles
  • All ScaleTypes
    • Borders are drawn at view edge, not bitmap edge
    • Except on edges where the bitmap is smaller than the view
    • Borders are not scaled up/down with the image (correct width and radius are maintained)
  • Anti-aliasing
  • Transparent backgrounds
  • Hardware acceleration
  • Support for LayerDrawables (including TransitionDrawables)
  • TileModes for repeating drawables

Gradle

RoundedImageView is available in Maven Central.

Add the following to your build.gradle to use:

repositories {
    mavenCentral()
}

dependencies {
    compile ‘com.makeramen:roundedimageview:2.2.0‘
}

Usage

Define in xml:

<com.makeramen.roundedimageview.RoundedImageView
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/imageView1"
        android:src="@drawable/photo1"
        android:scaleType="fitCenter"
        app:riv_corner_radius="30dip"
        app:riv_border_width="2dip"
        app:riv_border_color="#333333"
        app:riv_mutate_background="true"
        app:riv_tile_mode="repeat"
        app:riv_oval="true" />

Or in code:

RoundedImageView riv = new RoundedImageView(context);
riv.setScaleType(ScaleType.CENTER_CROP);
riv.setCornerRadius((float) 10);
riv.setBorderWidth((float) 2);
riv.setBorderColor(Color.DKGRAY);
riv.mutateBackground(true);
riv.setImageDrawable(drawable);
riv.setBackground(backgroundDrawable);
riv.setOval(true);
riv.setTileModeX(Shader.TileMode.REPEAT);
riv.setTileModeY(Shader.TileMode.REPEAT);

Or make a Transformation for Picasso:

Transformation transformation = new RoundedTransformationBuilder()
          .borderColor(Color.BLACK)
          .borderWidthDp(3)
          .cornerRadiusDp(30)
          .oval(false)
          .build();

Picasso.with(context)
    .load(url)
    .fit()
    .transform(transformation)
    .into(imageView);

Changelog

see Releases

 

项目地址:https://github.com/vinc3m1/RoundedImageView

android中的一个圆角图片

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原文地址:http://www.cnblogs.com/ArRan/p/4766067.html

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