解决support design 28版本不适配的问题

Author: yuruiyin

.gitignore

@@ -1,10 +1,42 @@
+# Built application files
+*.apk
+*.ap_
+
+# Files for the Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+
+# Gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+*.log
+
+# Android Studio Navigation editor temp files
+.navigation/
+
+# Android Studio captures folder
+captures/
+
+# Idea tool config
+.idea
 *.iml
-.gradle
-/local.properties
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-.DS_Store
-/build
-/captures
-.externalNativeBuild
+
+traces.txt
+
+reports/
+
+*.DS_Store

.idea/caches/build_file_checksums.ser

@@ -6,11 +6,10 @@ group='com.github.yuruiyin'
 android {
     compileSdkVersion 27
 
-
-
     defaultConfig {
         minSdkVersion 15
         targetSdkVersion 27
+        buildToolsVersion '27.0.3'
         versionCode 1
         versionName "1.0"
 
@@ -31,10 +30,8 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
     implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support:design:27.1.1'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
-
-    implementation 'com.android.support:appcompat-v7:27.1.1'
-    implementation 'com.android.support:design:27.1.1'
 }

.idea/codeStyles/Project.xml

@@ -49,16 +49,52 @@ public boolean onInterceptTouchEvent(CoordinatorLayout parent, AppBarLayout chil
         return super.onInterceptTouchEvent(parent, child, ev);
     }
 
+    /**
+     * 反射获取私有的flingRunnable 属性，考虑support 28以后变量名修改的问题
+     * @return Field
+     * @throws NoSuchFieldException
+     */
+    private Field getFlingRunnableField() throws NoSuchFieldException {
+        try {
+            // support design 27及一下版本
+            Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass();
+            return headerBehaviorType.getDeclaredField("mFlingRunnable");
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+            // 可能是28及以上版本
+            Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass().getSuperclass();
+            return headerBehaviorType.getDeclaredField("flingRunnable");
+        }
+    }
+
+    /**
+     * 反射获取私有的scroller 属性，考虑support 28以后变量名修改的问题
+     * @return Field
+     * @throws NoSuchFieldException
+     */
+    private Field getScrollerField() throws NoSuchFieldException {
+        try {
+            // support design 27及一下版本
+            Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass();
+            return headerBehaviorType.getDeclaredField("mScroller");
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+            // 可能是28及以上版本
+            Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass().getSuperclass();
+            return headerBehaviorType.getDeclaredField("scroller");
+        }
+    }
+
     /**
      * 停止appbarLayout的fling事件
      * @param appBarLayout
      */
     private void stopAppbarLayoutFling(AppBarLayout appBarLayout) {
         //通过反射拿到HeaderBehavior中的flingRunnable变量
         try {
-            Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass();
-            Field flingRunnableField = headerBehaviorType.getDeclaredField("mFlingRunnable");
-            Field scrollerField = headerBehaviorType.getDeclaredField("mScroller");
+            Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass().getSuperclass();
+            Field flingRunnableField = getFlingRunnableField();
+            Field scrollerField = getScrollerField();
             flingRunnableField.setAccessible(true);
             scrollerField.setAccessible(true);
 

.idea/gradle.xml

@@ -29,3 +29,23 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
+ext {
+    compileSdkVersion = 28
+    buildToolsVersion = '28.0.3'
+    minSdkVersion = 15
+    targetSdkVersion = 28
+    androidSupportVersion = "28.0.0"
+}
+
+subprojects {
+    project.configurations.all {
+        resolutionStrategy.eachDependency { details ->
+            if (details.requested.group == 'com.android.support'
+                    && !details.requested.name.contains('multidex') ) {
+                details.useVersion androidSupportVersion
+            }
+        }
+    }
+}
+