更新了依赖

app/build.gradle

@@ -39,19 +39,19 @@ android {
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation 'androidx.preference:preference:1.1.1'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'com.google.android.material:material:1.2.1'
     implementation 'com.android.volley:volley:1.1.1'
     implementation 'org.jetbrains:annotations-java5:15.0'
-    testImplementation 'junit:junit:4.13'
+    testImplementation 'junit:junit:4.13.1'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test:runner:1.3.0'
     androidTestImplementation('androidx.test.espresso:espresso-core:3.3.0', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
     implementation files('libs/BaiduLBS_Android.jar')
     implementation files('libs/log4j-1.2.17.jar')
-    implementation 'com.google.android.gms:play-services-ads:19.4.0'
+    implementation 'com.google.android.gms:play-services-ads:19.5.0'
 }

build.gradle

@@ -1,42 +1,42 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-
-buildscript {
-
-    repositories {
-        maven {
-            url 'https://maven.aliyun.com/repository/jcenter'
-        }
-        maven {
-            url 'https://maven.aliyun.com/repository/google'
-        }
-        google()
-        jcenter()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.2'
-
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
-    }
-}
-
-allprojects {
-    repositories {
-        maven {
-            url 'https://maven.aliyun.com/repository/jcenter'
-        }
-        maven {
-            url 'https://maven.aliyun.com/repository/central'
-        }
-        maven {
-            url 'https://maven.aliyun.com/repository/google'
-        }
-        google()
-        jcenter()
-    }
-}
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+
+    repositories {
+        maven {
+            url 'https://maven.aliyun.com/repository/jcenter'
+        }
+        maven {
+            url 'https://maven.aliyun.com/repository/google'
+        }
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:4.1.0'
+
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        maven {
+            url 'https://maven.aliyun.com/repository/jcenter'
+        }
+        maven {
+            url 'https://maven.aliyun.com/repository/central'
+        }
+        maven {
+            url 'https://maven.aliyun.com/repository/google'
+        }
+        google()
+        jcenter()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Oct 05 10:08:54 CST 2020
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
+#Sun Nov 08 08:46:18 CST 2020
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip