PollToRefreshListView依赖

compile 'com.github.userswlwork:pull-to-refresh:1.0.0'

添加到build.gradle文件中

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    implementation files('libs/gson-2.2.4.jar')
    implementation files('libs/universal-image-loader-1.9.3-with-sources.jar')
    compile 'com.github.userswlwork:pull-to-refresh:1.0.0'
}