小Dome06:实现JD购物车功能

底层build.gradle

ext{
    retrofitVersion = '2.4.0'
    rxandroid = '2.1.0'
    butterknife = '8.8.1'
    okhttp = '3.11.0'
}

继承base

本app的build.gradle

compile 'com.squareup.retrofit2:converter-scalars:2.0.0'
    compile 'com.facebook.fresco:fresco:0.11.0'
    compile 'com.hjm:BottomTabBar:1.1.1'
    implementation 'com.sunfusheng:marqueeview:1.3.2'
    compile 'com.scwang.smartrefresh:SmartRefreshLayout:1.1.0-alpha-14'
    compile 'org.greenrobot:eventbus:3.0.0'
    compile 'com.jakewharton:butterknife:8.8.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    compile 'com.jcodecraeer:xrecyclerview:1.5.9'
    compile 'com.youth.banner:banner:1.4.9'
    compile 'com.github.bumptech.glide:glide:3.7.0'
    compile 'com.gyf.immersionbar:immersionbar:2.3.1'
    compile "com.squareup.retrofit2:retrofit:$rootProject.ext.retrofitVersion"
    compile "com.squareup.retrofit2:converter-gson:$rootProject.ext.retrofitVersion"
    compile "com.squareup.retrofit2:adapter-rxjava2:$rootProject.ext.retrofitVersion"
    compile 'io.reactivex.rxjava2:rxandroid:2.1.0'
    compile 'com.squareup.okhttp3:okhttp:3.11.0'
    compile 'com.squareup.okhttp3:logging-interceptor:3.11.0'
    testCompile 'junit:junit:4.12'
    compile project(':base')
}
configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
        if (requested.group == 'com.android.support') {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion '25.0.1'
            }
        }
    }
}

AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />

<application
    android:name=".app.App"

activity_main.xml

<com.hjm.bottomtabbar.BottomTabBar
    android:id="@+id/tab_var"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

activity_fragment1.xml

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:gravity="center"
    android:background="#CCCCCC"
    >

    <TextView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="8"
        android:gravity="center"
        android:text="购物车"
        android:textSize="25dp"/>

    <TextView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="2"
        android:gravity="center"
        android:text="编辑"
        android:textSize="18dp"/>

</LinearLayout>

<View
    android:layout_width="match_parent"
    android:layout_height="1px"
    android:background="#909090"/>

<android.support.v7.widget.RecyclerView
    android:id="@+id/carGV"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="8" />

<RelativeLayout
    android:id="@+id/cart_bottom_layout"
    android:padding="5dp"
    android:background="#CCCCCC"
    android:textColor="#C0C0C0"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1">

    <CheckBox
        android:layout_centerVertical="true"
        android:id="@+id/allCheckbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <TextView
        android:id="@+id/totalpriceTv"
        android:layout_centerVertical="true"
        android:layout_toRightOf="@+id/allCheckbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="总价:￥0.0"/>

    <Button
        android:id="@+id/buy"
        android:layout_alignParentRight="true"
        android:text="去结算"
        android:textSize="20dp"
        android:textColor="#fff"
        android:background="#F23030"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
</RelativeLayout>

<View
    android:layout_width="match_parent"
    android:layout_height="1dp"
    android:background="#CCCCCC"/>

three_yi.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="