未读数超过99显示省略号

app/src/main/java/com/hwj/demo/sb/MainActivity.java

@@ -52,7 +52,7 @@ public void onClick(int index) {
 
     public void onClickChangeUnread(View view) {
         for (int i = 0; i < binding.sbTab2.getLabelCount(); i++) {
-            binding.sbTab2.setLabelUnreadCount(i, (int) (Math.random() * 12) - 1);
+            binding.sbTab2.setLabelUnreadCount(i, (int) (Math.random() * 120) - 1);
         }
     }
 

app/src/main/res/layout/activity_main.xml

@@ -39,7 +39,7 @@
             app:sbar_labelArray="标签1|标签2|标签3|标签4"
             app:sbar_unreadMarginRight="10dp"
             app:sbar_unreadMarginTop="5dp"
-            app:sbar_unreadPadding="1dp"
+            app:sbar_unreadPadding="3dp"
             app:sbar_unreadTextSize="8sp"
             />
 

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:2.3.2'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,7 +15,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
-    }
+}
 }
 
 task clean(type: Delete) {
@@ -26,10 +26,10 @@ ext{
     minSdkVersion = 16
     targetSdkVersion = 25
     compileSdkVersion = 25
-    buildToolsVersion = '25.0.1'
+    buildToolsVersion = '26.0.0'
 
     // App dependencies
-    supportLibraryVersion = '25.0.1'
+    supportLibraryVersion = '25.3.1'
     junitVersion = '4.12'
     espressoVersion = '2.2.2'
 }

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip

lib_segmentbar/src/main/java/com/hwj/junmeng/sb/SegmentBar.java

@@ -47,8 +47,11 @@ public class SegmentBar extends View {
     private float textHeight;           //标签文字高度
     private float unreadTextHeight;     //未读数文字高度
 
+    private int maxUnreadCount=99;//显示的最大未读数
+
     private String[] texts;//标签数组
     private int[] unreadTexts;//标签未读数数组
+    private int maxUnreadBit;//未读数最大位数，用于计算圆点宽度
 
     OnItemClickListener listener;
     GradientDrawable gradientDrawable = new GradientDrawable();
@@ -172,7 +175,13 @@ protected void onDraw(Canvas canvas) {
             unreadPaint.setTextSize(unreadTextSize);
             unreadPaint.setColor(unreadBackgroundColor);
             int unreadCount = unreadTexts[i];
-            int unreadTextWidth = getTextWidth(unreadPaint, "" + unreadTexts[i]);
+            String unreadText="";
+            if(unreadCount>maxUnreadCount){
+                unreadText="...";
+            }else{
+                unreadText=""+unreadCount;
+            }
+            int unreadTextWidth = getTextWidth(unreadPaint, unreadText);
             unreadTextHeight = unreadPaint.descent() - unreadPaint.ascent();
             float redRadius = unreadTextHeight / 2.0f + unreadPadding;//红点的半径
             float redCenterX = labelWidth * (i + 1) - redRadius - unreadMarginRight;//红点的中心x
@@ -188,7 +197,7 @@ protected void onDraw(Canvas canvas) {
                 unreadPaint.setTextSize(unreadTextSize);
                 unreadPaint.setStrokeWidth(borderWidth);
                 //未读数文字的宽度
-                canvas.drawText("" + unreadTexts[i], redCenterX - unreadTextWidth / 2.0f, redCenterY + unreadTextHeight / 2.0f - unreadTextHeight / 5.0f, unreadPaint);
+                canvas.drawText(unreadText, redCenterX - unreadTextWidth / 2.0f, redCenterY + unreadTextHeight / 2.0f - unreadTextHeight / 5.0f, unreadPaint);
             }
 
 
@@ -236,6 +245,15 @@ public void setUnreadTextSize(float sp) {
         invalidate();
     }
 
+    /**
+     * 设置最大未读数，超过此数则显示“...”,默认99
+     */
+    public void setMaxUnreadCount(int maxUnreadCount){
+        this.maxUnreadCount=maxUnreadCount;
+        invalidate();
+    }
+
+
     /**
      * 设置标签未读个数
      *
@@ -267,6 +285,8 @@ public void setUnreadBackgroundColor(int color) {
         invalidate();
     }
 
+
+
     /**
      * 设置未读数上边距
      *