android 仿ios数字密码解锁界面的实例

// 绘制第一排1,2,3
 canvas.drawText("1", first_x, 40 + first_y, paint);
 canvas.drawText("2", first_x * 2, 40 + first_y, paint);
 canvas.drawText("3", first_x * 3, 40 + first_y, paint);
 // 绘制第2排4,5,6
 canvas.drawText("4", first_x, 40 + first_y + first_x, paint);
 canvas.drawText("5", first_x * 2, 40 + first_y + first_x, paint);
 canvas.drawText("6", first_x * 3, 40 + first_y + first_x, paint);
 // 绘制第3排7,8,9
 canvas.drawText("7", first_x, 40 + first_y + first_x * 2, paint);
 canvas.drawText("8", first_x * 2, 40 + first_y + first_x * 2, paint);
 canvas.drawText("9", first_x * 3, 40 + first_y + first_x * 2, paint);
 // 绘制第4排0
 canvas.drawText("0", first_x * 2, 40 + first_y + first_x * 3, paint);

//依次绘制第一排的圆
 canvas.drawCircle(first_x+10, 40 + first_y - 15, 50, paint);
 canvas.drawCircle(first_x*2+10, 40 + first_y - 15, 50, paint);
 canvas.drawCircle(first_x*3+10, 40 + first_y - 15, 50, paint);
 //依次绘制第2排的圆
 canvas.drawCircle(first_x+10, 40 + first_y + first_x - 15, 50, paint);
 canvas.drawCircle(first_x*2+10, 40 + first_y + first_x - 15, 50, paint);
 canvas.drawCircle(first_x*3+10, 40 + first_y + first_x - 15, 50, paint);
 //依次绘制第3排的圆
 canvas.drawCircle(first_x+10, 40 + first_y + first_x * 2 - 15, 50, paint);
 canvas.drawCircle(first_x*2+10, 40 + first_y + first_x * 2 - 15, 50, paint);
 canvas.drawCircle(first_x*3+10, 40 + first_y + first_x * 2 - 15, 50, paint);
 //绘制最后一个圆
 canvas.drawCircle(first_x*2+10, 40 + first_y + first_x * 3 - 15, 50, paint);

//判断是否点击数字
 if(circle_x > 0 && circle_y > 0){//点击
 if(type == 0){//按下刷新
 paint.setColor(Color.YELLOW);//设置画笔颜色
 canvas.drawCircle(circle_x, circle_y, 50, paint);//绘制圆
 }else if(type == 1){//弹起刷新
 paint.setColor(Color.WHITE);//设置画笔颜色
 canvas.drawCircle(circle_x, circle_y, 50, paint);//绘制圆
 //绘制完成后,重置
 circle_x = 0; circle_y = 0;
 }
 }

/*
 * 判断点击的是哪一个数字圆
 */
private void handleDown(float x, float y){
 //判断点击的是那一列的数据
 if(xs[0] - 50 <= x && x <= xs[0] + 50){//第一列
 //获取点击处的圆心横坐标
 circle_x = xs[0];
 //判断点击的是哪一排
 if(ys[0] - 50 <= y && ys[0] + 50 >= y){//第1排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[0];
 number = 1;//设置点击的数字
 }else if(ys[1] - 50 <= y && ys[1] + 50 >= y){//第2排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[1];
 number = 4;//设置点击的数字
 }else if(ys[2] - 50 <= y && ys[2] + 50 >= y){//第3排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[2];
 number = 7;//设置点击的数字
 }
 }else if(xs[1] - 50 <= x && x <= xs[1] + 50){//第2列
 //获取点击处的圆心横坐标
 circle_x = xs[1];
 //判断点击的是哪一排
 if(ys[0] - 50 <= y && ys[0] + 50 >= y){//第1排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[0];
 number = 2;//设置点击的数字
 }else if(ys[1] - 50 <= y && ys[1] + 50 >= y){//第2排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[1];
 number = 5;//设置点击的数字
 }else if(ys[2] - 50 <= y && ys[2] + 50 >= y){//第3排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[2];
 number = 8;//设置点击的数字
 }else if(ys[3] - 50 <= y && ys[3] + 50 >= y){//第4排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[3];
 number = 0;//设置点击的数字
 }
 }else if(xs[2] - 50 <= x && x <= xs[2] + 50){//第3列
 //获取点击处的圆心横坐标
 circle_x = xs[2];
 //判断点击的是哪一排
 if(ys[0] - 50 <= y && ys[0] + 50 >= y){//第1排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[0];
 number = 3;//设置点击的数字
 }else if(ys[1] - 50 <= y && ys[1] + 50 >= y){//第2排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[1];
 number = 6;//设置点击的数字
 }else if(ys[2] - 50 <= y && ys[2] + 50 >= y){//第3排
 //获取点击的数字圆的圆心纵坐标
 circle_y = ys[2];
 number = 9;//设置点击的数字
 }
 }
 sendAccessEvent(R.string.numeric_keyboard_down);
 type = 0;//按下刷新
 //绘制点击时的背景圆
 invalidate();
}