如何使用图像视图和文本 android 创建自定义弯曲布局？
How to create custom bent layout with imageview and text android?
您好，我正在创建聊天应用程序，我需要在其中创建带有文本的弯曲 ImageView 形状。我不知道如何提及布局的形状。我已附上截图要求如何。
我尝试了什么：
<LinearLayout
android:id="@+id/left_chat"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="top|left"
android:orientation="horizontal"
android:padding="10dp"
android:visibility="visible" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="@+id/left_chat_img"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="center"
android:background="@android:color/transparent"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/user_profile_image" />
<TextView
android:id="@+id/chat_receiver_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="2dp"
android:gravity="center"
android:maxLength="10"
android:textColor="@color/color_common_black"
android:textSize="13sp"
app:font_name="@string/font_roboto_light" />
</LinearLayout>
<LinearLayout
android:id="@+id/view_chat_left_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:background="@drawable/chat_tab_expert"
android:gravity="center_vertical"
android:orientation="vertical"
android:paddingBottom="5dp"
android:paddingLeft="10dp"
android:paddingRight="5dp"
android:paddingTop="5dp" >
<TextView
android:id="@+id/txt_left_chat_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:gravity="top"
android:textColor="@color/color_common_black"
android:textSize="15sp"
app:font_name="@string/font_roboto_regular" />
<TextView
android:id="@+id/txt_chat_time_left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginLeft="5dp"
android:gravity="top"
android:textColor="@color/color_common_black"
android:textSize="13sp"
app:font_name="@string/font_roboto_regular" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/view_right_chat"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:gravity="top|right|"
android:orientation="horizontal"
android:padding="10dp"
android:visibility="visible" >
<LinearLayout
android:id="@+id/view_chat_right_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:background="@drawable/shape_chat_cus_bg"
android:gravity="top"
android:minHeight="50dp"
android:minWidth="180dp"
android:orientation="vertical"
android:paddingBottom="5dp"
android:paddingLeft="5dp"
android:paddingRight="10dp"
android:paddingTop="5dp" >
<TextView
android:id="@+id/txt_right_chat_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:gravity="top"
android:textColor="@color/color_white"
android:textSize="15sp"
app:font_name="@string/font_roboto_regular" />
<LinearLayout
android:id="@+id/view_right_icons"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginTop="5dp"
android:gravity="center"
android:orientation="horizontal" >
<ImageView
android:id="@+id/img_msg_status_right"
android:layout_width="15dp"
android:layout_height="13dp"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/ic_scene" />
<TextView
android:id="@+id/txt_chat_time_right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:gravity="top"
android:textColor="@color/color_white"
android:textSize="13sp"
app:font_name="@string/font_roboto_regular" />
</LinearLayout>
</LinearLayout>
<ImageView
android:id="@+id/img_chat_customer"
android:layout_width="13dp"
android:layout_height="13dp"
android:layout_marginTop="15dp"
android:background="@android:color/transparent"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/ic_arrow" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:gravity="center"
android:orientation="vertical" >
<com.views.CircularImageView
android:id="@+id/view_right_chat_img"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="top"
android:background="@android:color/transparent"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/user_profile_image"
android:visibility="visible" />
<TextView
android:id="@+id/txt_chat_sender_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="2dp"
android:gravity="center"
android:maxLength="10"
android:textColor="@color/color_common_black"
android:textSize="13sp"
app:font_name="@string/font_roboto_light" />
</LinearLayout>
</LinearLayout>
这是我尝试过但无法实现所需设计的屏幕截图。
我放置了圆形 ImageView，但我不知道如何使用这种类型的设计来引入 android。
请建议我如何创建这样的设计。谢谢。
我们必须使用自定义背景和自定义圆圈图像视图。
Top Textveiw 背景：top_text_bg.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/holo_blue_bright" />
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="5dp"
android:topRightRadius="10dp" />
</shape>
留言文字背景：msg_text_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid android:color="@color/list_row_bg" />
<corners android:radius="@dimen/dimen_10" />
</shape>
主要 activity : test.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.tunedinn.android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="@dimen/dimen_5"
android:background="@android:color/darker_gray"
android:paddingBottom="2dp" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<RelativeLayout
android:id="@+id/rl"
android:layout_width="match_parent"
android:layout_height="90dp"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/t1"
android:layout_marginLeft="2dp"
android:background="@drawable/msg_text_bg"
android:paddingBottom="10dp" >
<TextView
android:id="@+id/t3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:gravity="right"
android:text="10 March,2015" />
<TextView
android:id="@+id/t2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="80dp"
android:gravity="left"
android:text="hello how are you " />
</RelativeLayout>
<TextView
android:id="@+id/t1"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="41dp"
android:background="@drawable/top_text_bg"
android:gravity="right"
android:padding="4dp"
android:text="Julein Renvoye " />
<com.tunedinn.android.view.CircularImageView
android:id="@+id/fragment_profile_imageview_profile_picture"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_alignParentTop="true"
android:scaleType="fitXY"
android:src="@drawable/andi"
app:border="true"
app:border_color="@android:color/holo_blue_bright"
app:border_width="2dp"
app:shadow="true" />
</RelativeLayout>
</RelativeLayout>
圆形图像视图：
package com.tunedinn.android.view;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;
import com.tunedinn.android.R;
@SuppressLint("NewApi")
public class CircularImageView extends ImageView {
private int borderWidth;
private int canvasSize;
private Bitmap image;
private Paint paint;
private Paint paintBorder;
public CircularImageView(final Context context) {
this(context, null);
}
public CircularImageView(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.circularImageViewStyle);
}
public CircularImageView(Context context, AttributeSet attrs, int defStyle)
super(context, attrs, defStyle);
// init paint
paint = new Paint();
paint.setAntiAlias(true);
paintBorder = new Paint();
paintBorder.setAntiAlias(true);
paintBorder.setStyle(Style.STROKE.STROKE);
// load the styled attributes and set their properties
TypedArray attributes = context.obtainStyledAttributes(attrs,
R.styleable.CircularImageView, defStyle, 0);
if (attributes.getBoolean(R.styleable.CircularImageView_border, true)) {
int defaultBorderSize = (int) (4 * getContext().getResources()
.getDisplayMetrics().density + 0.5f);
setBorderWidth(attributes.getDimensionPixelOffset(
R.styleable.CircularImageView_border_width,
defaultBorderSize));
setBorderColor(attributes.getColor(
R.styleable.CircularImageView_border_color, Color.WHITE));
}
if (attributes.getBoolean(R.styleable.CircularImageView_shadow, false))
addShadow();
}
public void setBorderWidth(int borderWidth) {
paintBorder.setStrokeWidth(borderWidth);
this.borderWidth = borderWidth;
this.requestLayout();
this.invalidate();
}
public void setBorderColor(int borderColor) {
if (paintBorder != null)
paintBorder.setColor(borderColor);
this.invalidate();
}
public void addShadow() {
setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
}
@Override
public void onDraw(Canvas canvas) {
// load the bitmap
image = drawableToBitmap(getDrawable());
// init shader
if (image != null) {
canvasSize = canvas.getWidth();
if (canvas.getHeight() < canvasSize)
canvasSize = canvas.getHeight();
BitmapShader shader = new BitmapShader(Bitmap.createScaledBitmap(
image, canvasSize, canvasSize, false),
Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
paint.setShader(shader);
// circleCenter is the x or y of the view's center
// radius is the radius in pixels of the cirle to be drawn
// paint contains the shader that will texture the shape
int circleCenter = (canvasSize - (borderWidth * 2)) / 2;
canvas.drawCircle(circleCenter + borderWidth, circleCenter
+ borderWidth, ((canvasSize - (borderWidth * 2)) / 2)
+ borderWidth - 4.0f, paintBorder);
canvas.drawCircle(circleCenter + borderWidth, circleCenter
+ borderWidth,
((canvasSize - (borderWidth * 2)) / 2) - 4.0f, paint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = measureWidth(widthMeasureSpec);
int height = measureHeight(heightMeasureSpec);
setMeasuredDimension(width, height);
}
private int measureWidth(int measureSpec) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
// The parent has determined an exact size for the child.
result = specSize;
} else if (specMode == MeasureSpec.AT_MOST) {
// The child can be as large as it wants up to the specified size.
result = specSize;
} else {
// The parent has not imposed any constraint on the child.
result = canvasSize;
}
return result;
}
private int measureHeight(int measureSpecHeight) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpecHeight);
int specSize = MeasureSpec.getSize(measureSpecHeight);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else if (specMode == MeasureSpec.AT_MOST) {
// The child can be as large as it wants up to the specified size.
result = specSize;
} else {
// Measure the text (beware: ascent is a negative number)
result = canvasSize;
}
return (result + 2);
}
public Bitmap drawableToBitmap(Drawable drawable) {
if (drawable == null) {
return null;
} else if (drawable instanceof BitmapDrawable) {
return ((BitmapDrawable) drawable).getBitmap();
}
Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
}
您好，我正在创建聊天应用程序，我需要在其中创建带有文本的弯曲 ImageView 形状。我不知道如何提及布局的形状。我已附上截图要求如何。
我尝试了什么：
<LinearLayout
android:id="@+id/left_chat"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="top|left"
android:orientation="horizontal"
android:padding="10dp"
android:visibility="visible" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="@+id/left_chat_img"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="center"
android:background="@android:color/transparent"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/user_profile_image" />
<TextView
android:id="@+id/chat_receiver_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="2dp"
android:gravity="center"
android:maxLength="10"
android:textColor="@color/color_common_black"
android:textSize="13sp"
app:font_name="@string/font_roboto_light" />
</LinearLayout>
<LinearLayout
android:id="@+id/view_chat_left_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:background="@drawable/chat_tab_expert"
android:gravity="center_vertical"
android:orientation="vertical"
android:paddingBottom="5dp"
android:paddingLeft="10dp"
android:paddingRight="5dp"
android:paddingTop="5dp" >
<TextView
android:id="@+id/txt_left_chat_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:gravity="top"
android:textColor="@color/color_common_black"
android:textSize="15sp"
app:font_name="@string/font_roboto_regular" />
<TextView
android:id="@+id/txt_chat_time_left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginLeft="5dp"
android:gravity="top"
android:textColor="@color/color_common_black"
android:textSize="13sp"
app:font_name="@string/font_roboto_regular" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/view_right_chat"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:gravity="top|right|"
android:orientation="horizontal"
android:padding="10dp"
android:visibility="visible" >
<LinearLayout
android:id="@+id/view_chat_right_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:background="@drawable/shape_chat_cus_bg"
android:gravity="top"
android:minHeight="50dp"
android:minWidth="180dp"
android:orientation="vertical"
android:paddingBottom="5dp"
android:paddingLeft="5dp"
android:paddingRight="10dp"
android:paddingTop="5dp" >
<TextView
android:id="@+id/txt_right_chat_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:gravity="top"
android:textColor="@color/color_white"
android:textSize="15sp"
app:font_name="@string/font_roboto_regular" />
<LinearLayout
android:id="@+id/view_right_icons"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginTop="5dp"
android:gravity="center"
android:orientation="horizontal" >
<ImageView
android:id="@+id/img_msg_status_right"
android:layout_width="15dp"
android:layout_height="13dp"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/ic_scene" />
<TextView
android:id="@+id/txt_chat_time_right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:gravity="top"
android:textColor="@color/color_white"
android:textSize="13sp"
app:font_name="@string/font_roboto_regular" />
</LinearLayout>
</LinearLayout>
<ImageView
android:id="@+id/img_chat_customer"
android:layout_width="13dp"
android:layout_height="13dp"
android:layout_marginTop="15dp"
android:background="@android:color/transparent"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/ic_arrow" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:gravity="center"
android:orientation="vertical" >
<com.views.CircularImageView
android:id="@+id/view_right_chat_img"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="top"
android:background="@android:color/transparent"
android:contentDescription="@string/text_image_description"
android:scaleType="fitXY"
android:src="@drawable/user_profile_image"
android:visibility="visible" />
<TextView
android:id="@+id/txt_chat_sender_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="2dp"
android:gravity="center"
android:maxLength="10"
android:textColor="@color/color_common_black"
android:textSize="13sp"
app:font_name="@string/font_roboto_light" />
</LinearLayout>
</LinearLayout>
这是我尝试过但无法实现所需设计的屏幕截图。
我放置了圆形 ImageView，但我不知道如何使用这种类型的设计来引入 android。
请建议我如何创建这样的设计。谢谢。
我们必须使用自定义背景和自定义圆圈图像视图。
Top Textveiw 背景：top_text_bg.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/holo_blue_bright" />
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="5dp"
android:topRightRadius="10dp" />
</shape>
留言文字背景：msg_text_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid android:color="@color/list_row_bg" />
<corners android:radius="@dimen/dimen_10" />
</shape>
主要 activity : test.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.tunedinn.android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="@dimen/dimen_5"
android:background="@android:color/darker_gray"
android:paddingBottom="2dp" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<RelativeLayout
android:id="@+id/rl"
android:layout_width="match_parent"
android:layout_height="90dp"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/t1"
android:layout_marginLeft="2dp"
android:background="@drawable/msg_text_bg"
android:paddingBottom="10dp" >
<TextView
android:id="@+id/t3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:gravity="right"
android:text="10 March,2015" />
<TextView
android:id="@+id/t2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="80dp"
android:gravity="left"
android:text="hello how are you " />
</RelativeLayout>
<TextView
android:id="@+id/t1"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="41dp"
android:background="@drawable/top_text_bg"
android:gravity="right"
android:padding="4dp"
android:text="Julein Renvoye " />
<com.tunedinn.android.view.CircularImageView
android:id="@+id/fragment_profile_imageview_profile_picture"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_alignParentTop="true"
android:scaleType="fitXY"
android:src="@drawable/andi"
app:border="true"
app:border_color="@android:color/holo_blue_bright"
app:border_width="2dp"
app:shadow="true" />
</RelativeLayout>
</RelativeLayout>
圆形图像视图：
package com.tunedinn.android.view;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;
import com.tunedinn.android.R;
@SuppressLint("NewApi")
public class CircularImageView extends ImageView {
private int borderWidth;
private int canvasSize;
private Bitmap image;
private Paint paint;
private Paint paintBorder;
public CircularImageView(final Context context) {
this(context, null);
}
public CircularImageView(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.circularImageViewStyle);
}
public CircularImageView(Context context, AttributeSet attrs, int defStyle)
super(context, attrs, defStyle);
// init paint
paint = new Paint();
paint.setAntiAlias(true);
paintBorder = new Paint();
paintBorder.setAntiAlias(true);
paintBorder.setStyle(Style.STROKE.STROKE);
// load the styled attributes and set their properties
TypedArray attributes = context.obtainStyledAttributes(attrs,
R.styleable.CircularImageView, defStyle, 0);
if (attributes.getBoolean(R.styleable.CircularImageView_border, true)) {
int defaultBorderSize = (int) (4 * getContext().getResources()
.getDisplayMetrics().density + 0.5f);
setBorderWidth(attributes.getDimensionPixelOffset(
R.styleable.CircularImageView_border_width,
defaultBorderSize));
setBorderColor(attributes.getColor(
R.styleable.CircularImageView_border_color, Color.WHITE));
}
if (attributes.getBoolean(R.styleable.CircularImageView_shadow, false))
addShadow();
}
public void setBorderWidth(int borderWidth) {
paintBorder.setStrokeWidth(borderWidth);
this.borderWidth = borderWidth;
this.requestLayout();
this.invalidate();
}
public void setBorderColor(int borderColor) {
if (paintBorder != null)
paintBorder.setColor(borderColor);
this.invalidate();
}
public void addShadow() {
setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
}
@Override
public void onDraw(Canvas canvas) {
// load the bitmap
image = drawableToBitmap(getDrawable());
// init shader
if (image != null) {
canvasSize = canvas.getWidth();
if (canvas.getHeight() < canvasSize)
canvasSize = canvas.getHeight();
BitmapShader shader = new BitmapShader(Bitmap.createScaledBitmap(
image, canvasSize, canvasSize, false),
Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
paint.setShader(shader);
// circleCenter is the x or y of the view's center
// radius is the radius in pixels of the cirle to be drawn
// paint contains the shader that will texture the shape
int circleCenter = (canvasSize - (borderWidth * 2)) / 2;
canvas.drawCircle(circleCenter + borderWidth, circleCenter
+ borderWidth, ((canvasSize - (borderWidth * 2)) / 2)
+ borderWidth - 4.0f, paintBorder);
canvas.drawCircle(circleCenter + borderWidth, circleCenter
+ borderWidth,
((canvasSize - (borderWidth * 2)) / 2) - 4.0f, paint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = measureWidth(widthMeasureSpec);
int height = measureHeight(heightMeasureSpec);
setMeasuredDimension(width, height);
}
private int measureWidth(int measureSpec) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
// The parent has determined an exact size for the child.
result = specSize;
} else if (specMode == MeasureSpec.AT_MOST) {
// The child can be as large as it wants up to the specified size.
result = specSize;
} else {
// The parent has not imposed any constraint on the child.
result = canvasSize;
}
return result;
}
private int measureHeight(int measureSpecHeight) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpecHeight);
int specSize = MeasureSpec.getSize(measureSpecHeight);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else if (specMode == MeasureSpec.AT_MOST) {
// The child can be as large as it wants up to the specified size.
result = specSize;
} else {
// Measure the text (beware: ascent is a negative number)
result = canvasSize;
}
return (result + 2);
}
public Bitmap drawableToBitmap(Drawable drawable) {
if (drawable == null) {
return null;
} else if (drawable instanceof BitmapDrawable) {
return ((BitmapDrawable) drawable).getBitmap();
}
Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
}