Android MarkTipsView文字标识控件使用方法

本文实例为大家分享了Android MarkTipsView文字标识控件的具体代码，供大家参考，具体内容如下

效果预览

使用方式跟TextView使用方式一样，背景设置直接setBackgroundColor

import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Path;import android.graphics.RectF;import android.util.AttributeSet;import androidx.appcompat.widget.AppCompatTextView;/** * 绘制mark标注 */public class MarkTipsView extends AppCompatTextView { /** * 画笔 */ private Paint paint; /** * 宽度 */ private int width; /** * 高度 */ private int height; /** * 标识宽度 */ private int markWidth = 12; /** * 标识高度 */ private int markHeight = 12; /** * 圆角大小 */ private float radius = 10; /** * 填充颜色 */ private int solid = Color.parseColor('#F1AA44'); public MarkTipsView(Context context) {super(context);initAttributeSet(context, null); } public MarkTipsView(Context context, AttributeSet attrs) {super(context, attrs);initAttributeSet(context, attrs); } public MarkTipsView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);initAttributeSet(context, attrs); } private void initAttributeSet(Context context, AttributeSet attrs) {paint = new Paint();paint.setDither(true);paint.setAntiAlias(true);paint.setStyle(Paint.Style.FILL);TypedArray array = context.obtainStyledAttributes(attrs,new int[]{android.R.attr.background});solid = array.getInt(0,solid);array.recycle(); } @Override public void setBackgroundColor(int color) {solid = color;invalidate(); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec);width = getMeasuredWidth();height = getMeasuredHeight(); } @Override protected void onFinishInflate() {super.onFinishInflate();setPadding(getPaddingLeft(), getPaddingTop(), getPaddingRight(), getPaddingBottom() + markHeight); } @Override protected void onDraw(Canvas canvas) {paint.setColor(solid);//矩形Path path = new Path();RectF rect = new RectF(0, 0, width, height - markHeight);path.addRoundRect(rect, radius, radius, Path.Direction.CCW);//三角形Path onePath = new Path();onePath.lineTo(width / 2 - markWidth, rect.height());onePath.lineTo(width / 2, height);onePath.lineTo(width / 2 + markWidth, rect.height());onePath.close();path.addPath(onePath);//绘制路径canvas.drawPath(path, paint);super.onDraw(canvas);//重绘文字setText(getText()); } /** * 获取底部标识箭头高度 * @return */ public int getMarkHeight() {return markHeight; } /** * 设置底部标识箭头高度 * @param markHeight */ public void setMarkHeight(int markHeight) {this.markHeight = markHeight;invalidate(); } /** * 获取底部标识箭头宽度 * @return */ public int getMarkWidth() {return markWidth; } /** * 设置底部标识箭头宽度 * @param markWidth */ public void setMarkWidth(int markWidth) {this.markWidth = markWidth;invalidate(); } /** * 获取圆角大小 * @return */ public float getRadius() {return radius; } /** * 设置圆角大小 * @param radius */ public void setRadius(float radius) {this.radius = radius;invalidate(); }}

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