本文實(shí)例為大家分享了Android MarkTipsView文字標(biāo)識控件的具體代碼，供大家參考，具體內(nèi)容如下

效果預(yù)覽

使用方式跟TextView使用方式一樣，背景設(shè)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;/** * 繪制mark標(biāo)注 */public class MarkTipsView extends AppCompatTextView { /** * 畫筆 */ private Paint paint; /** * 寬度 */ private int width; /** * 高度 */ private int height; /** * 標(biāo)識寬度 */ private int markWidth = 12; /** * 標(biāo)識高度 */ private int markHeight = 12; /** * 圓角大小 */ private float radius = 10; /** * 填充顏色 */ 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);//繪制路徑canvas.drawPath(path, paint);super.onDraw(canvas);//重繪文字setText(getText()); } /** * 獲取底部標(biāo)識箭頭高度 * @return */ public int getMarkHeight() {return markHeight; } /** * 設(shè)置底部標(biāo)識箭頭高度 * @param markHeight */ public void setMarkHeight(int markHeight) {this.markHeight = markHeight;invalidate(); } /** * 獲取底部標(biāo)識箭頭寬度 * @return */ public int getMarkWidth() {return markWidth; } /** * 設(shè)置底部標(biāo)識箭頭寬度 * @param markWidth */ public void setMarkWidth(int markWidth) {this.markWidth = markWidth;invalidate(); } /** * 獲取圓角大小 * @return */ public float getRadius() {return radius; } /** * 設(shè)置圓角大小 * @param radius */ public void setRadius(float radius) {this.radius = radius;invalidate(); }}

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