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"