Android自定义ImageView给ImageView加边框
Java代码：MyImageView.java
package com.zjbk.utils;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.widget.ImageView;
public class MyImageView extends ImageView {
private String namespace = "http://shadow.com";
private int color;
public MyImageView(Context context, AttributeSet attrs) {
super(context, attrs);
color = Color.parseColor(attrs.getAttributeValue(namespace,
"BorderColor"));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// 画边框
Rect rec = canvas.getClipBounds();
rec.bottom--;
rec.right--;
Paint paint = new Paint();
paint.setColor(color);
paint.setStyle(Paint.Style.STROKE);
canvas.drawRect(rec, paint);
}
}
布局文件：main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:shadow="http://shadow.com"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/bg"
android:gravity="center_horizontal"
android:orientation="vertical" >
<com.zjbk.utils.MyImageView
android:id="@+id/menu_user_image"
android:layout_width="80dp"
android:layout_height="80dp"
android:src="@drawable/user_image"
shadow:BorderColor="white" />
</LinearLayout>
调用方法和ImageView相同
