我想让任何图像从我的ImageView是圆形的边界。
我搜索了一下，但没有找到任何有用的信息(我尝试的任何方法都不管用)。
如何通过XML实现这一点: 创建一个ImageView与某些src，并使它与边界圆形?
当前回答
我是这样做的，我在矢量图像中使用了背景色
ic_bg_picture.xml
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="100dp"
android:height="100dp"
android:viewportWidth="100"
android:viewportHeight="100">
<path
android:pathData="M100.6,95.5c0,-0.4 -0.1,-0.7 0,-1.1c-0.2,-0.7 -0.2,-1.4 -0.1,-2.1c0,-0.1 0,-0.2 0,-0.3c-0.1,-0.6 -0.1,-1.2 0,-1.8c-1,-1.3 -0.3,-2.9 -0.3,-4.3c-0.1,-28.7 -0.1,-57.3 -0.1,-86C68,-0.1 35.9,-0.1 3.8,-0.2C0.7,-0.2 0,0.5 0,3.6c0.1,32.1 0.1,64.2 0.1,96.2c31,0 62,-0.1 92.9,0.1c3.6,0 6.3,-0.2 7.5,-3.2C100.5,96.4 100.5,95.9 100.6,95.5zM46.3,95.2C26.4,94 2,74.4 3.8,46.8C5.1,27.2 24.4,2.7 52.6,4.6c20.2,1.4 43,21.3 41.5,45.1C96.1,72.4 73,96.8 46.3,95.2z"
android:fillColor="#6200EE"/>
</vector>
在我的情况下，我创建了一个向量，并更改android:fillColor="#6200EE"
通过我背景的颜色
<ImageView
android:id="@+id/iv_profile_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:contentDescription="@string/app_name"
app:srcCompat="@color/colorPrimaryDark" />
<ImageView
android:id="@+id/container_profile_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:contentDescription="@string/app_name"
app:srcCompat="@drawable/ic_bg_picture"/>
其他回答
实际上，你可以使用谷歌提供的支持库RoundedBitmapDrawableFactory类(这里和这里)，而不是使用第三方库:
Gradle:
implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
MainActivity.kt
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val originalDrawable = ContextCompat.getDrawable(this, R.drawable.avatar_1)!!
val bitmap = convertDrawableToBitmap(originalDrawable)
val drawable = RoundedBitmapDrawableFactory.create(resources, bitmap)
drawable.setAntiAlias(true)
drawable.cornerRadius = Math.max(bitmap.width, bitmap.height) / 2.0f
avatarImageView.setImageDrawable(drawable)
}
companion object {
@JvmStatic
fun convertDrawableToBitmap(drawable: Drawable): Bitmap {
if (drawable is BitmapDrawable)
return drawable.bitmap
// We ask for the bounds if they have been set as they would be most
// correct, then we check we are > 0
val bounds = drawable.bounds
val width = if (!bounds.isEmpty) bounds.width() else drawable.intrinsicWidth
val height = if (!bounds.isEmpty) bounds.height() else drawable.intrinsicHeight
// Now we check we are > 0
val bitmap = Bitmap.createBitmap(if (width <= 0) 1 else width, if (height <= 0) 1 else height,
Bitmap.Config.ARGB_8888)
val canvas = Canvas(bitmap)
drawable.setBounds(0, 0, canvas.width, canvas.height)
drawable.draw(canvas)
return bitmap
}
}
}
xml res - - activity_main布局。
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" tools:context=".MainActivity">
<androidx.appcompat.widget.AppCompatImageView
android:id="@+id/avatarImageView" android:layout_width="100dp" android:layout_height="100dp"
android:layout_gravity="center"/>
</FrameLayout>
res - drawable avatar_1 xml。
<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="128dp" android:height="128dp"
android:viewportHeight="128.0" android:viewportWidth="128.0">
<path
android:fillColor="#FF8A80" android:pathData="M0 0h128v128h-128z"/>
<path
android:fillColor="#FFE0B2"
android:pathData="M36.3 94.8c6.4 7.3 16.2 12.1 27.3 12.4 10.7,-.3 20.3,-4.7 26.7,-11.6l.2.1c-17,-13.3,-12.9,-23.4,-8.5,-28.6 1.3,-1.2 2.8,-2.5 4.4,-3.9l13.1,-11c1.5,-1.2 2.6,-3 2.9,-5.1.6,-4.4,-2.5,-8.4,-6.9,-9.1,-1.5,-.2,-3 0,-4.3.6,-.3,-1.3,-.4,-2.7,-1.6,-3.5,-1.4,-.9,-2.8,-1.7,-4.2,-2.5,-7.1,-3.9,-14.9,-6.6,-23,-7.9,-5.4,-.9,-11,-1.2,-16.1.7,-3.3 1.2,-6.1 3.2,-8.7 5.6,-1.3 1.2,-2.5 2.4,-3.7 3.7l-1.8 1.9c-.3.3,-.5.6,-.8.8,-.1.1,-.2 0,-.4.2.1.2.1.5.1.6,-1,-.3,-2.1,-.4,-3.2,-.2,-4.4.6,-7.5 4.7,-6.9 9.1.3 2.1 1.3 3.8 2.8 5.1l11 9.3c1.8 1.5 3.3 3.8 4.6 5.7 1.5 2.3 2.8 4.9 3.5 7.6 1.7 6.8,-.8 13.4,-5.4 18.4,-.5.6,-1.1 1,-1.4 1.7,-.2.6,-.4 1.3,-.6 2,-.4 1.5,-.5 3.1,-.3 4.6.4 3.1 1.8 6.1 4.1 8.2 3.3 3 8 4 12.4 4.5 5.2.6 10.5.7 15.7.2 4.5,-.4 9.1,-1.2 13,-3.4 5.6,-3.1 9.6,-8.9 10.5,-15.2m-14.4,-49.8c.9 0 1.6.7 1.6 1.6 0 .9,-.7 1.6,-1.6 1.6,-.9 0,-1.6,-.7,-1.6,-1.6,-.1,-.9.7,-1.6 1.6,-1.6zm-25.7 0c.9 0 1.6.7 1.6 1.6 0 .9,-.7 1.6,-1.6 1.6,-.9 0,-1.6,-.7,-1.6,-1.6,-.1,-.9.7,-1.6 1.6,-1.6z"/>
<path
android:fillColor="#E0F7FA"
android:pathData="M105.3 106.1c-.9,-1.3,-1.3,-1.9,-1.3,-1.9l-.2,-.3c-.6,-.9,-1.2,-1.7,-1.9,-2.4,-3.2,-3.5,-7.3,-5.4,-11.4,-5.7 0 0 .1 0 .1.1l-.2,-.1c-6.4 6.9,-16 11.3,-26.7 11.6,-11.2,-.3,-21.1,-5.1,-27.5,-12.6,-.1.2,-.2.4,-.2.5,-3.1.9,-6 2.7,-8.4 5.4l-.2.2s-.5.6,-1.5 1.7c-.9 1.1,-2.2 2.6,-3.7 4.5,-3.1 3.9,-7.2 9.5,-11.7 16.6,-.9 1.4,-1.7 2.8,-2.6 4.3h109.6c-3.4,-7.1,-6.5,-12.8,-8.9,-16.9,-1.5,-2.2,-2.6,-3.8,-3.3,-5z"/>
<path
android:fillColor="#444" android:pathData="M76.3,47.5 m-2.0, 0 a 2.0,2.0 0 1,1 4.0,0 a2.0,2.0 0 1,1 -4.0,0"/>
<path
android:fillColor="#444" android:pathData="M50.7,47.6 m-2.0, 0 a 2.0,2.0 0 1,1 4.0,0 a2.0,2.0 0 1,1 -4.0,0"/>
<path
android:fillColor="#444"
android:pathData="M48.1 27.4c4.5 5.9 15.5 12.1 42.4 8.4,-2.2,-6.9,-6.8,-12.6,-12.6,-16.4 17.2 1.5 14.1,-9.4 14.1,-9.4,-1.4 5.5,-11.1 4.4,-11.1 4.4h-18.8c-1.7,-.1,-3.4 0,-5.2.3,-12.8 1.8,-22.6 11.1,-25.7 22.9 10.6,-1.9 15.3,-7.6 16.9,-10.2z"/>
</vector>
结果:
并且，假设你想在它上面添加一个边框，你可以使用下面的例子:
stroke_drawable.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
<stroke
android:width="4dp" android:color="@android:color/black"/>
</shape>
并添加android:前台="@drawable/stroke_drawable"到布局XML文件中的ImageView，你会得到这个:
不过，我不确定如何添加阴影(这将适用于较旧的Android版本)。使用FloatingActionButton(从“com.google.android. button”材料:材料"依赖)，我未能使位图填充FAB本身。如果它能起作用，那么使用它会更好。
编辑:如果你想添加立面阴影(可从API 21)，你可以改变一点我写的:
在布局XML文件内部:
<androidx.appcompat.widget.AppCompatImageView android:padding="4dp"
android:id="@+id/avatarImageView" android:layout_width="100dp" android:layout_height="100dp" android:elevation="8dp"
android:layout_gravity="center" android:background="@drawable/stroke_drawable" tools:srcCompat="@drawable/avatar_1"/>
CircularShadowViewOutlineProvider.kt
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
class CircularShadowViewOutlineProvider : ViewOutlineProvider() {
override fun getOutline(view: View, outline: Outline) {
val size = Math.max(view.width, view.height)
outline.setRoundRect(0, 0, size, size, size / 2f)
}
}
在代码:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
avatarImageView.outlineProvider = CircularShadowViewOutlineProvider()
结果:
这是一个相对较老的问题，但您可以在可绘制文件夹中创建一个圆形边框(假设xml文件将称为circle_border)
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="@android:color/transparent" />
<!-- If you want a padding -->
<padding android:top="4dp" android:left="4dp" android:right="4dp" android:bottom="4dp" />
<!-- If you want the circle border to have a color -->
<strong android:width="1dp" android:color="#FFFFFF" />
</shape>
然后你可以使用它作为ImageView的背景
<ImageView
android:background="@drawable/circle_border"
<!-- other attributes here -->
/>
只需使用这些代码行，你就完成了:
<de.hdodenhof.circleimageview.CircleImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:clickable="true"
app:civ_border_width="3dp"
app:civ_border_color="#FFFFFFFF"
android:id="@+id/profile"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_below="@+id/header_cover_image"
android:layout_centerHorizontal="true"
android:layout_marginTop="-130dp"
android:elevation="5dp"
android:padding="20dp"
android:scaleType="centerCrop"
android:src="@drawable/profilemain" />
别忘了导入:
import de.hdodenhof.circleimageview.CircleImageView;
在构建中添加此库。gradle:
compile 'de.hdodenhof:circleimageview:2.1.0'
另一种不使用任何库的方法是使用ImageFilterView，并设置视图的圆百分比将使圆
app: roundPercent =“1”
<androidx.constraintlayout.utils.widget.ImageFilterView
android:id="@+id/ivProfile"
android:layout_width="150dp"
android:layout_height="150dp"
android:src="@drawable/custom_button_1"
app:roundPercent="1"
android:scaleType="fitXY"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toTopOf="@+id/etName"/>
把这个答案贴出来供将来参考。你可以在com.google.android.material:material中使用ShapeableImageView。
<com.google.android.material.imageview.ShapeableImageView
android:id="@+id/img_launcher_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_margin="5dp"
android:adjustViewBounds="true"
android:background="@android:color/transparent"
android:elevation="5dp"
android:maxWidth="50dp"
android:maxHeight="50dp"
android:scaleType="fitXY"
android:src="@mipmap/ic_launcher"
app:shapeAppearance="?attr/actionButtonStyle"
app:shapeAppearanceOverlay="@style/imageViewRounded"
app:strokeColor="@android:color/white" />
在你的styles.xml中添加imageviewraded样式
<style name="imageViewRounded">
<item name="cornerFamily">rounded</item>
<item name="cornerSize">51%</item>
</style>
如果没有添加，可以添加材料设计依赖项。
implementation 'com.google.android.material:material:1.4.0'
设计是这样的
推荐文章
- BottomSheetDialogFragment的圆角
- 在应用程序启动时出现“无法获得BatchedBridge，请确保您的bundle被正确打包”的错误
- 我如何改变默认对话框按钮的文本颜色在安卓5
- 更改单选按钮的圆圈颜色
- 如何在android中复制一个文件?
- adb找不到我的设备/手机(MacOS X)
- 如何将XML转换成PHP数组?
- XMLHttpRequest Origin null不允许Access-Control-Allow-Origin for file:/// to file:///(无服务器)
- 如何在新的材质主题中改变背面箭头的颜色?
- androidviewpager与底部点
- 相同的导航抽屉在不同的活动
- 如何从视图中获得托管活动?
- 单一的TextView与多种颜色的文本
- 如何在非活动类(LocationManager)中使用getSystemService ?
- 在清单中注册应用程序类?
