Android自定义控件横向柱状统计图

/**横向柱状统计图
* Created by Administrator on 2018/1/16 0016.
*/
public class HorizontalChartView extends View {
/**
* 间隔线画笔
*/
private Paint paint;
/**
* 线的颜色
*/
private int color_line = Color.rgb(230, 230, 230);
/**
* 字的颜色
*/
private int color_font = Color.rgb(51, 51, 51);
/**
* 比例图颜色
*/
private int color_plan = Color.rgb(22, 85, 164);
/**
* 比例图画笔
*/
private Paint paint_plan;
/**
* 比例图高度
*/
private int plan_height;
/**
* 初始化比例
*/
private Float[] ratio = {0f, 0f, 0f, 0f, 0f, 0f, 0f, 0f, 0f, 0f, 0f, 0f};
/**
* 文字画笔1
*/
private Paint paint_font;
/**
* 文字画笔2
*/
private Paint paint_font2;
/**
* 线的条数
*/
private int line_num = 11;
/**
* 比例数
*/
private String ratio_num = "0";
/**
* 月份
*/
private String month_num = "1月";
public HorizontalChartView(Context context) {
super(context);
}
public HorizontalChartView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public HorizontalChartView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs);
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public HorizontalChartView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
init(context, attrs);
}
/**
* 初始化
*
* @param context
* @param attrs
*/
public void init(Context context, AttributeSet attrs) {
paint = new Paint();
paint.setColor(color_line);
paint_plan = new Paint();
paint_plan.setColor(color_plan);
paint_font = new Paint();
paint_font.setColor(color_font);
paint_font.setTextSize(DensityUtils.dp2px(context, 12));
paint_font.setAntiAlias(true);
paint_font.setTextAlign(Paint.Align.CENTER);
paint_font2 = new Paint();
paint_font2.setColor(color_font);
paint_font2.setTextSize(DensityUtils.dp2px(context, 12));
paint_font2.setAntiAlias(true);
paint_font2.setTextAlign(Paint.Align.RIGHT);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
int width = getWidth();
int height = getHeight();
int lift_width = (int) (width * 0.15);
int line_width = (int) (width * 0.78);
//获取底部文字信息
Paint.FontMetrics fm = paint_font.getFontMetrics();
int line_length = (int) (height - (fm.bottom - fm.top) - 4);
plan_height = (int) (line_length / 12 * 0.3);
for (int i = 0; i < line_num; i++) {
canvas.save();
if (i == 0) {
ratio_num = "0";
} else {
ratio_num = i + "0";
}
//底部百分比数字
canvas.drawText(ratio_num, lift_width + i * line_width / 10, height - 10, paint_font);
//网络线
canvas.drawLine(lift_width + i * line_width / 10, 0, lift_width + i * line_width / 10, line_length, paint);
canvas.restore();
}
//获取月份文字信息
Paint.FontMetrics fm1 = paint_font2.getFontMetrics();
for (int n = 12; n   0; n--) {
canvas.save();
month_num = n + "月";
//左侧月份
canvas.drawText(month_num, lift_width / 4 * 3, ((line_length / 12)) * (13 - n) - line_length / 24 + (fm1.bottom - fm1.top) / 2, paint_font2);
//比例图
canvas.drawRect(lift_width, line_length / 12 * (13 - n) - (line_length / 24 + plan_height / 2) + fm1.bottom,
line_width * (ratio[n - 1] / 100) + lift_width, line_length / 12 * (13 - n) - (line_length / 24 + plan_height / 2) + plan_height + fm1.bottom, paint_plan);
canvas.restore();
}
}
/**
* 传入比例信息
*
* @param ratio
*/
public void setRatio(Float[] ratio) {
this.ratio = ratio;
}
}