MenuFragment

主界面布局改版：

Fragment替代RadioGroup,之前总是用RadioGroup做主界面的跳转，其实很早就放弃了，已经用Fragment替代了，一直没写，学习时间也没多少，最近闲下来，把自己的知识总结总结，俗话说的好，再好的脑子总是比不上一个烂笔头；

首先上布局文件：tabmenu_layout:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@color/progress_bg"
                android:orientation="vertical">

    <FrameLayout
        android:id="@+id/id_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="40dp"/>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:background="@color/white"
        android:orientation="horizontal"
        android:paddingBottom="3dp"
        android:paddingTop="3dp"
        android:weightSum="1">


        <TextView
            android:id="@+id/start_tv"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0.25"
            android:drawablePadding="3dp"
            android:drawableTop="@drawable/start_layout"
            android:gravity="center"
            android:paddingTop="3dp"
            android:text="主页"
            android:textColor="@color/tab_color_bg"
            android:textSize="14sp"
            />

        <TextView
            android:id="@+id/shop_tv"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0.25"
            android:drawablePadding="3dp"
            android:drawableTop="@drawable/shop_layout"
            android:gravity="center"
            android:paddingTop="3dp"
            android:text="购物车"
            android:textColor="@color/tab_color_bg"
            android:textSize="14sp"/>

        <TextView
            android:id="@+id/order_tv"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0.25"
            android:drawablePadding="3dp"
            android:drawableTop="@drawable/order_layout"
            android:gravity="center"
            android:paddingTop="3dp"
            android:text="订单"
            android:textColor="@color/tab_color_bg"
            android:textSize="14sp"/>

        <TextView
            android:id="@+id/myself_tv"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0.25"
            android:drawablePadding="3dp"
            android:drawableTop="@drawable/myself_layout"
            android:gravity="center"
            android:paddingTop="3dp"
            android:text="我的"
            android:textColor="@color/tab_color_bg"
            android:textSize="14sp"/>
    </LinearLayout>
    </RelativeLayout>

 其中 TextView的字体颜色，是在color.xml文件中存放两种状态颜色值

 

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/变色颜色" android:state_selected="true"/>
    <item android:color="@color/默认颜色" />
</selector>

 而android:drawableTop是调用Drawable文件夹中的layout文件：

 

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/变色图" android:state_selected="true"/>
    <item android:drawable="@drawable/默认"/>
</selector>

 

代码文件(算得上是最原始的代码了，没啥框架)：

 

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.TextView;

import butterknife.Bind;
import butterknife.ButterKnife;

public class MainMenuActivity extends FragmentActivity implements View.OnClickListener {


    @Bind(R.id.id_content)
    FrameLayout mIdContent;
    @Bind(R.id.start_tv)
    TextView mStartTv;
    @Bind(R.id.shop_tv)
    TextView mShopTv;
    @Bind(R.id.order_tv)
    TextView mOrderTv;
    @Bind(R.id.myself_tv)
    TextView mMyselfTv;
    private TextView[] tv;
    private Fragment[] mFragments;

    private int curIndex;

    private StartFragment mStartFragment = new StartFragment();
    private ShopFragment mShopFragment = new ShopFragment();
    private OrderFragment mOrderFragment = new OrderFragment();
    private MyselfFragment mMyselfFragment = new MyselfFragment();
    private FragmentManager mManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tabmenu_layout);
        ButterKnife.bind(this);

        Viewinit();

    }

    private void Viewinit() {
        tv = new TextView[]{mStartTv, mShopTv, mOrderTv, mMyselfTv};
        mFragments = new Fragment[]{mStartFragment, mShopFragment, mOrderFragment, mMyselfFragment};
        for (int i = 0; i < tv.length; i++) {
            tv[i].setOnClickListener(this);
        }

        mManager = this.getSupportFragmentManager();
        FragmentTransaction transaction = mManager.beginTransaction();

        for (Fragment fragmnt : mFragments) {
            transaction.add(R.id.id_content, fragmnt).hide(fragmnt);
        }

        transaction.show(mFragments[0]);
        transaction.commit();
        mStartTv.setSelected(true);
    }


    @Override
    public void onClick(View view) {
        int index = 0;
        switch (view.getId()) {
            case R.id.start_tv:
                index = 0;
                break;
            case R.id.shop_tv:
                index = 1;
                break;
            case R.id.order_tv:
                index = 2;
                break;
            case R.id.myself_tv:
                index = 3;
                break;
        }

        if (curIndex != index) {
            tv[index].setSelected(true);
            tv[curIndex].setSelected(false);
            openFragment(mFragments[index], true);
            openFragment(mFragments[curIndex], false);
            curIndex = index;
        }
    }

    private void openFragment(Fragment mfragment, boolean mshow) {
        FragmentTransaction tt = mManager.beginTransaction();
        if (mshow) {
            tt.show(mfragment);
        } else {
            tt.hide(mfragment);
        }
        tt.commit();
    }

}

 其中@Bind是直接使用compile 'com.jakewharton:butterknife:7.0.1'