首先,定义定义圆形Imageview类:
[java] view plaincopy
- import android.content.Context;
- import android.graphics.Bitmap;
- import android.graphics.Bitmap.Config;
- import android.graphics.Canvas;
- import android.graphics.Color;
- import android.graphics.Paint;
- import android.graphics.PorterDuff.Mode;
- import android.graphics.PorterDuffXfermode;
- import android.graphics.Rect;
- import android.graphics.drawable.BitmapDrawable;
- import android.graphics.drawable.Drawable;
- import android.util.AttributeSet;
- import android.widget.ImageView;
- public class RoundImageView extends ImageView {
- public RoundImageView(Context context) {
- super(context);
- // TODO Auto-generated constructor stub
- }
- public RoundImageView(Context context, AttributeSet attrs) {
- super(context, attrs);
- }
- public RoundImageView(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;
- }
- Bitmap b = ((BitmapDrawable)drawable).getBitmap();
- 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;
- }
- }
然后在别的布局文件中使用该控件即可,如:
[html] view plaincopy
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:background="@drawable/side_right"
- android:gravity="center"
- android:orientation="vertical" >
- <LinearLayout
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:gravity="center"
- android:layout_marginTop="35dip"
- android:orientation="vertical" >
- <<span style="color:#ff0000;">com.founder.reader.view.RoundImageView</span>
- android:id="@+id/right_login_head"
- android:layout_width="60dip"
- android:layout_height="60dip"
- android:scaleType="centerInside"
- android:src="@drawable/user" />
时间: 2024-11-06 23:39:29