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
这样就可以了:
rectangle.xml
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@android:color/transparent" />
<padding android:bottom="-14dp" android:left="-14dp" android:right="-14dp" android:top="-14dp" />
</shape>
circle.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadius="0dp"
android:shape="oval"
android:useLevel="false" >
<solid android:color="@android:color/transparent" />
<stroke
android:width="15dp"
android:color="@color/verification_contact_background" />
</shape>
profile_image.xml(图层列表)
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:drawable="@drawable/rectangle" />
<item android:drawable="@drawable/circle"/>
</layer-list>
你的布局
<ImageView
android:id="@+id/profile_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/default_org"
android:src="@drawable/profile_image"/>
其他回答
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"/>
这个类是自定义圆形Imageview，有阴影，描边，饱和度，使用这个自定义圆形Imageview，你可以让你的图像在半径的圆形形状。圆形阴影ImageView不需要Github这个类就足够了。
添加CircularImageView到你的布局
CircularImageView c=new CircularImageView(this,screen width,screen height,Bitmap myimage);
yourLayout.addView(c);**
public class CircularImageView extends android.support.v7.widget.AppCompatImageView
{
private final Context context;
private final int width, height;
private final Paint paint;
private final Paint paintBorder,imagePaint;
private final Bitmap bitmap2;
private final Paint paint3;
private Bitmap bitmap;
private BitmapShader shader;
private float radius = 4.0f;
float x = 0.0f;
float y = 8.0f;
private float stroke;
private float strokeWidth = 0.0f;
private Bitmap bitmap3;
private int corner_radius=50;
public CircularImageView(Context context, int width, int height, Bitmap bitmap) {
super(context);
this.context = context;
this.width = width;
this.height = height;
//here "bitmap" is the square shape(width* width) scaled bitmap ..
this.bitmap = bitmap;
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true);
paint3=new Paint();
paint3.setStyle(Paint.Style.STROKE);
paint3.setColor(Color.WHITE);
paint3.setAntiAlias(true);
paintBorder = new Paint();
imagePaint= new Paint();
paintBorder.setColor(Color.WHITE);
paintBorder.setAntiAlias(true);
this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
this.bitmap2 = Bitmap.createScaledBitmap(bitmap, (bitmap.getWidth() - 40), (bitmap.getHeight() - 40), true);
imagePaint.setAntiAlias(true);
invalidate();
}
@Override
protected void onDraw(Canvas canvas)
{
super.onDraw(canvas);
Shader b;
if (bitmap3 != null)
b = new BitmapShader(bitmap3, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
else
b = new BitmapShader(bitmap2, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
imagePaint.setShader(b);
canvas.drawBitmap(maskedBitmap(), 20, 20, null);
}
private Bitmap maskedBitmap()
{
Bitmap l1 = Bitmap.createBitmap(width,width, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(l1);
paintBorder.setShadowLayer(radius, x, y, Color.parseColor("#454645"));
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
final RectF rect = new RectF();
rect.set(20, 20, bitmap2.getWidth(), bitmap2.getHeight());
canvas.drawRoundRect(rect, corner_radius, corner_radius, paintBorder);
canvas.drawRoundRect(rect, corner_radius, corner_radius, imagePaint);
if (strokeWidth!=0.0f)
{
paint3.setStrokeWidth(strokeWidth);
canvas.drawRoundRect(rect, corner_radius, corner_radius, paint3);
}
paint.setXfermode(null);
return l1;
}
// use seekbar here, here you have to pass "0 -- 250" here corner radius will change
public void setCornerRadius(int corner_radius)
{
this.corner_radius = corner_radius;
invalidate();
}
-------->use seekbar here, here you have to pass "0 -- 10.0f" here shadow radius will change
public void setShadow(float radius)
{
this.radius = radius;
invalidate();
}
// use seekbar here, here you have to pass "0 -- 10.0f" here stroke size will change
public void setStroke(float stroke)
{
this.strokeWidth = stroke;
invalidate();
}
private Bitmap updateSat(Bitmap src, float settingSat)
{
int w = src.getWidth();
int h = src.getHeight();
Bitmap bitmapResult =
Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
Canvas canvasResult = new Canvas(bitmapResult);
Paint paint = new Paint();
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.setSaturation(settingSat);
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrix);
paint.setColorFilter(filter);
canvasResult.drawBitmap(src, 0, 0, paint);
return bitmapResult;
}
// use seekbar here, here you have to pass "0 -- 2.0f" here saturation will change
public void setSaturation(float sat)
{
System.out.println("qqqqqqqqqq "+sat);
bitmap3=updateSat(bitmap2, sat);
invalidate();
}
}
// Seekbar to change radius
radius_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
text_radius.setText(""+progress);
circularImageView.setCornerRadius(progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
// Seekbar to change shadow
shadow_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
float f= 4+progress/10.0f;
text_shadow.setText(""+progress);
circularImageView.setShadow(f);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
// Seekbar to change saturation
saturation_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
int progressSat = saturation_seekbar.getProgress();
float sat = (float) ((progressSat*4 / 100.0f)-1.0f);
circularImageView.setSaturation(sat);
text_saturation.setText(""+progressSat);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
// Seekbar to change stroke
stroke_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
if (progress==0)
{
float f=(progress*10.0f/100.0f);
circularImageView.setStroke(f);
}
else
{
float f=(progress*10.0f/100.0f);
circularImageView.setStroke(f);
}
text_stroke.setText(""+progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
//radius seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="50"
android:max="250"
android:id="@+id/radius_seekbar"
android:layout_height="wrap_content" />
//saturation seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="50"
android:max="100"
android:id="@+id/saturation_seekbar"
android:layout_height="wrap_content" />
//shadow seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="0"
android:max="100"
android:id="@+id/shadow_seekbar"
android:layout_height="wrap_content" />
//stroke seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="0"
android:max="100"
android:id="@+id/stroke _seekbar"
android:layout_height="wrap_content" />
只需使用这段简单的代码: 首先添加依赖项:
implementation 'de.hdodenhof:circleimageview:2.2.0'
然后在XML布局中添加以下代码
<de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/Imgshaligram"
android:layout_width="96dp"
android:layout_height="96dp"
android:src="@drawable/shaligram"
app:civ_border_color="#d1b1b1"
android:foregroundGravity="center"/>
最佳解决方案https://www.youtube.com/watch?v=0MHoNU7ytaw 卡视图的宽度和高度决定了它所包含图像的大小设置如下:
向Gradle添加依赖项(模块) 将xml代码添加到activity.xml或fragment.xml文件中
implementation 'androidx.cardview:cardview:1.0.0'
<androidx.cardview.widget.CardView
android:layout_width="300dp"
android:layout_height="270dp"
android:layout_gravity="center"
app:cardCornerRadius="150dp"
app:cardBackgroundColor="@color/trans"
>
<ImageView
android:id="@+id/resultImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/congrats"
android:layout_gravity="center">
</ImageView>
</androidx.cardview.widget.CardView>```
你可以做一个简单的圆，有白色边框，透明内容的形状。
// res/drawable/circle.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadius="0dp"
android:shape="ring"
android:thicknessRatio="1.9"
android:useLevel="false" >
<solid android:color="@android:color/transparent" />
<stroke
android:width="10dp"
android:color="@android:color/white" />
</shape>
然后制作一个可绘制的图层列表，并将其作为imageview的背景。
// res/drawable/img.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:drawable="@drawable/circle"/>
<item android:drawable="@drawable/ic_launcher"/>
</layer-list>
把它作为imageview的背景。
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/img"/>
你会得到类似的东西。
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