hide the toolbar when you scroll this view
运行该项目需自行导入最新的依赖库
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile 'com.android.support:cardview-v7:21.0.3'
}
CSDN连接地址：http://blog.csdn.net/xiaozhiwz/article/details/44804185