Android中给图片加边框

需要重写ImageView

 

1

//设置颜色

2	public void setColour(int color){

3	co = color;

4

}

5

//设置边框宽度

6	public void setBorderWidth(int width){

7

8	borderwidth = width;

9

}

具体实现：

01	package xiaosi.imageborder;

02

03	import android.app.Activity;

04	import android.graphics.Color;

05	import android.os.Bundle;

06

07	public class ImageBorderActivity extends Activity {

08	/** Called when the activity is first created. */

09	private myImageView image = null;

10	private myImageView image1 = null;

11

@Override

12	public void onCreate(Bundle savedInstanceState) {

13	super.onCreate(savedInstanceState);

14	setContentView(R.layout.main);

15

16	image = (myImageView)findViewById(R.id.iamge);

17	image.setColour(Color.YELLOW);

18	image.setBorderWidth(10);

19	image1 = (myImageView)findViewById(R.id.iamge1);

20	image1.setColour(Color.GREEN);

21	image1.setBorderWidth(5);

22

}

23

}

main.xml

01	<LinearLayout

02	xmlns:android="http://schemas.android.com/apk/res/android"

03	android:background="@drawable/playerbackground"

04	android:layout_width="fill_parent"

05	android:layout_height="fill_parent">

06	<xiaosi.imageborder.myImageView

07	android:id="@+id/iamge"

08	android:layout_width="200px"

09	android:layout_height="230px"

10	android:layout_alignParentRight="true"

11	android:src="@drawable/v"

12	android:layout_centerInParent="true"

13	android:layout_marginRight="3px"

14

/>

15	<xiaosi.imageborder.myImageView

16	android:id="@+id/iamge1"

17	android:layout_width="200px"

18	android:layout_height="230px"

19	android:layout_alignParentRight="true"

20	android:src="@drawable/v"

21	android:layout_centerInParent="true"

22	android:layout_marginRight="3px"

23

/>

24	</LinearLayout>

01	package xiaosi.imageborder;

02

03	import android.content.Context;

04	import android.graphics.Canvas;

05	import android.graphics.Paint;

06	import android.graphics.Rect;

07	import android.util.AttributeSet;

08	import android.widget.ImageView;

09

10	public class myImageView extends ImageView {

11

12	private int co;

13	private int borderwidth;

14	public myImageView(Context context) {

15	super(context);

16

}

17	public myImageView(Context context, AttributeSet attrs,

18	int defStyle) {

19	super(context, attrs, defStyle);

20

}

21

22	public myImageView(Context context, AttributeSet attrs) {

23	super(context, attrs);

24

}

25

//设置颜色

26	public void setColour(int color){

27	co = color;

28

}

29

//设置边框宽度

30	public void setBorderWidth(int width){

31

32	borderwidth = width;

33

}

34

@Override

35	protected void onDraw(Canvas canvas) {

36	super.onDraw(canvas);

37

// 画边框

38	Rect rec = canvas.getClipBounds();

39	rec.bottom--;

40	rec.right--;

41	Paint paint = new Paint();

42

//设置边框颜色

43	paint.setColor(co);

44	paint.setStyle(Paint.Style.STROKE);

45

//设置边框宽度

46	paint.setStrokeWidth(borderwidth);

47	canvas.drawRect(rec, paint);

48

}

49

}