分享一个textView右上角的添加小红点的 tips

自定义TextView：

import com.ydk.mikecrm.R;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.util.AttributeSet;
import android.widget.TextView;

/**
 * textView上的小红点
 * @author Visual
 *
 */
public class RedTipTextView extends TextView {
	public static final int RED_TIP_INVISIBLE = 0;
	public static final int RED_TIP_VISIBLE = 1;
	public static final int RED_TIP_GONE = 2;
	private int tipVisibility = 0;
	
	public RedTipTextView(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
		init(null);
	}

	public RedTipTextView(Context context, AttributeSet attrs) {
		super(context, attrs);
		// TODO Auto-generated constructor stub
		init(attrs);
	}

	public RedTipTextView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		// TODO Auto-generated constructor stub
		init(attrs);
	}
	
	public void init(AttributeSet attrs) {
		if(attrs != null) {
			TypedArray array = getContext().obtainStyledAttributes(attrs, R.styleable.RedTipTextView);
			tipVisibility = array.getInt(R.styleable.RedTipTextView_redTipsVisibility, 0);
			array.recycle();
		}
	}
	
	@Override
	protected void onDraw(Canvas canvas) {
		// TODO Auto-generated method stub
		super.onDraw(canvas);
		if(tipVisibility == 1) {
			int width = getWidth();
			int paddingRight = getPaddingRight();
			Paint paint = new Paint();
			paint.setColor(Color.RED);
			paint.setAntiAlias(true);
			paint.setDither(true);
			paint.setStyle(Style.FILL_AND_STROKE);
			canvas.drawCircle(width - getPaddingRight() / 2, paddingRight / 2, paddingRight/2, paint);
		}
	}
	
	public void setVisibility(int visibility) {
		tipVisibility = visibility;
		invalidate();
	}
}

attrs.xml添加

xml布局：

   android:id="@+id/sliding_menu_item_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:paddingRight="5dip"
            mike:redTipsVisibility="invisible"
            android:layout_toRightOf="@id/sliding_menu_item_icon"
            android:textColor="@color/text_light_gray_color"
            android:textSize="@dimen/sliding_menu_item_text_size"