編輯:關於android開發
1. 效果圖
2. xml中
<com.etoury.etoury.ui.view.CircleImg android:id="@+id/user_info_head_img" android:layout_width="120dp" android:layout_height="120dp" android:layout_centerInParent="true" android:src="@drawable/ic_user" > </com.etoury.etoury.ui.view.CircleImg>
3. 自定義view
CircleImg.java
package com.etoury.etoury.ui.view; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.Bitmap.Config; import android.graphics.PorterDuff.Mode; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.widget.ImageView; public class CircleImg extends ImageView{ public CircleImg(Context context) { super(context); // TODO Auto-generated constructor stub } public CircleImg(Context context, AttributeSet attrs) { super(context, attrs); } public CircleImg(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override protected void onDraw(Canvas canvas) { Drawable drawable = getDrawable(); if (drawable == null) { return; } if (getWidth() == 0 || getHeight() == 0) { return; } int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; Bitmap b = Bitmap.createBitmap(width, height, config); // Bitmap b = ((BitmapDrawable) drawable).getBitmap(); // 注意,下面三行代碼要用到,否在在View或者surfaceview裡的canvas.drawBitmap會看不到圖 Canvas can = new Canvas(b); drawable.setBounds(0, 0, width, height); drawable.draw(can); if (null == b) { return; } Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true); int w = getWidth(), h = getHeight(); Bitmap roundBitmap = getCroppedBitmap(bitmap, w); canvas.drawBitmap(roundBitmap, 0, 0, null); } public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) { Bitmap sbmp; if (bmp.getWidth() != radius || bmp.getHeight() != radius) sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, false); else sbmp = bmp; Bitmap output = Bitmap.createBitmap(sbmp.getWidth(), sbmp.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xffa19774; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, sbmp.getWidth(), sbmp.getHeight()); paint.setAntiAlias(true); paint.setFilterBitmap(true); paint.setDither(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(Color.parseColor("#BAB399")); canvas.drawCircle(sbmp.getWidth() / 2 + 0.7f, sbmp.getHeight() / 2 + 0.7f, sbmp.getWidth() / 2 + 0.1f, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(sbmp, rect, rect, paint); return output; } }
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