仿御泥坊 完美实现电商类项目底部选项卡切换Fragment页面

此为Activity页面XML布局

"http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".HomeActivity" >
    //为fragment创建一个容器
    "@+id/main_content"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    "match_parent"
        android:layout_height="1dp"
        android:background="#d7cbcb" />
    //底部radiobutton切换
    "@+id/tab_menu"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        "@+id/tab_home"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
            android:layout_weight="1"
            android:button="@null"
            android:checked="true"
            android:drawableTop="@drawable/tabhome_selector"
            android:gravity="center_horizontal|bottom"
            android:paddingTop="2dp"
            android:text="@string/tabhome"
            android:textColor="@color/tab_selector_tv_color" />

        "@+id/tab_classify"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
            android:layout_weight="1"
            android:button="@null"
            android:drawableTop="@drawable/classify_selector"
            android:gravity="center_horizontal|bottom"
            android:paddingTop="2dp"
            android:text="@string/tabclassfiy"
            android:textColor="@color/tab_selector_tv_color" />

        "@+id/tab_shop"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
            android:layout_weight="1"
            android:button="@null"
            android:drawableTop="@drawable/shopping_selector"
            android:gravity="center_horizontal|bottom"
            android:paddingTop="2dp"
            android:text="@string/tabshopping"
            android:textColor="@color/tab_selector_tv_color" />

        "@+id/tab_user"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
            android:layout_weight="1"
            android:button="@null"
            android:drawableTop="@drawable/user_selector"
            android:gravity="center_horizontal|bottom"
            android:paddingTop="2dp"
            android:text="@string/tabuser"
            android:textColor="@color/tab_selector_tv_color" />
    </RadioGroup>

LinearLayout>

此为主Activity代码 附带一个双击返回键退出应用

public class HomeActivity extends FragmentActivity {
    // 退出时的时间
    private long mExitTime;
    private home_frag home;
    private classify_frag classify;
    private shopping_frag shop;
    private user_frag user;
    private RadioGroup tab_menu;
    @SuppressWarnings("unused")
    private RadioButton tab_home;
    private FragmentManager manager;
    private FragmentTransaction transaction;
    private NetworkInfo networkInfo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_home);
        info();
        // 设置fragment
        home = new home_frag();
        classify = new classify_frag();
        manager = getSupportFragmentManager();
        shop = new shopping_frag();
        user = new user_frag();
        transaction = manager.beginTransaction();
        FragmentTransaction trnTransaction = getSupportFragmentManager().beginTransaction();
        trnTransaction.add(R.id.main_content, home, "home");
        trnTransaction.add(R.id.main_content, classify, "classify");
        trnTransaction.add(R.id.main_content, shop, "shop");
        trnTransaction.add(R.id.main_content, user, "user");
        switchTag("home");
        trnTransaction.commit();
        // 监听切换fragment
        infoView();

    }

    // 获取控件
    private void info() {
        tab_home = (RadioButton) findViewById(R.id.tab_home);
    }

    public void infoView() {
        tab_menu = (RadioGroup) findViewById(R.id.tab_menu);
        tab_menu.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {

                switch (checkedId) {
                case R.id.tab_home:
                    switchTag("home");
                    break;
                case R.id.tab_classify:
                    switchTag("classify");
                    break;
                case R.id.tab_shop:
                    switchTag("shop");
                    break;
                case R.id.tab_user:
                    switchTag("user");
                    break;
                default:
                    break;
                }

            }
        });
    }

    private void switchTag(String str) {
        FragmentTransaction transaction = manager.beginTransaction();
        if (str.equals("home")) {
            transaction.show(home);
            transaction.hide(classify);
            transaction.hide(shop);
            transaction.hide(user);
        } else if (str.equals("classify")) {
            transaction.show(classify);
            transaction.hide(home);
            transaction.hide(shop);
            transaction.hide(user);
        } else if (str.equals("shop")) {
            transaction.show(shop);
            transaction.hide(classify);
            transaction.hide(home);
            transaction.hide(user);
        } else if (str.equals("user")) {
            transaction.show(user);
            transaction.hide(classify);
            transaction.hide(shop);
            transaction.hide(home);
        }
        transaction.commit();
    }

    // 对返回键进行监听
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {

        if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
            exit();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    @SuppressLint("ShowToast")
    public void exit() {
        if ((System.currentTimeMillis() - mExitTime) > 2000) {
            Toast.makeText(HomeActivity.this, "再按一次退出应用", 0).show();
            mExitTime = System.currentTimeMillis();
        } else {
            finish();
            System.exit(0);
        }
    }
}

之后就是创建四个fragment 在这里就不往上上传了
以下再将RadioButton的状态选择器为大家上传
这是其中一个只需要更改图片即可

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/bottom_tab_user_selected" android:state_checked="true">item>
    <item android:drawable="@drawable/bottom_tab_user_normal" android:state_checked="false">item>

selector>

字体颜色的改变颜色

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_checked="true" android:color="#fc6b87"/>
    <item android:state_checked="false" android:color="#9c9c9c"/>
    <item android:color="#9c9c9c"/>

selector>