自定义组件

package com.example.ceshi;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.util.AttributeSet;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Toast;
public class MyViwe extends View implements OnClickListener{

    private Paint _paintPaint;

    private int count;
public MyViwe(Context context, AttributeSet attrs) {

        super(context, attrs);

        _paintPaint = new Paint(Paint.ANTI_ALIAS_FLAG);

        count = 0;

        setOnClickListener( this);

    }
@Override

    protected void onDraw(Canvas canvas) {

        super.onDraw(canvas);

        if(count<5){

            _paintPaint.setColor(Color.BLUE);

        }else if(count<10){

            _paintPaint.setColor(Color.GRAY);

        }else if(count<15){

            _paintPaint.setColor(Color.YELLOW);

        }else{

            _paintPaint.setColor(Color.CYAN);

            Toast.makeText(getContext(), "呵呵", 1).show();

        }
canvas.drawRect(0, 0, getWidth(), getHeight(), _paintPaint);

        _paintPaint.setTextSize(20);

        _paintPaint.setColor(Color.RED);

        String string = "你好！李浩"+ count;

        canvas.drawText(string,  0, getHeight()/2, _paintPaint);
}
@Override

    public void onClick(View v) {

        count++;

        //重新加载

        invalidate();

    }
}

自定义组件