Jam*_*s A 0 android onscrolllistener android-recyclerview
我似乎无法为我的 recyclerview 实现/扩展 OnScrollistener 以了解 recyclerview 何时到达底部
public class UpcomingFragment extends Fragment
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如果出现以下情况,我该如何实施:
implements RecyclerView.OnScrollListener
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和
implements OnScrollListener
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给我一个“此处预期的接口”错误
我的构建 gradle 模块:
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "company.com.movieapp"
minSdkVersion 15
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
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建设等级项目
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
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}
https://developer.android.com/reference/android/support/v7/widget/RecyclerView.OnScrollListener.html
RecyclerView.OnScrollListener
是abstract
。
private final RecyclerView.OnScrollListener onScrollListener = new RecyclerView.OnScrollListener() {
@Override
public void onScrollStateChanged(final RecyclerView recyclerView, final int newState) {
// code
}
@Override
public void onScrolled(final RecyclerView recyclerView, final int dx, final int dy) {
// code
}
};
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RecyclerView
:recyclerView.addOnScrollListener(onScrollListener);
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