RadioButton界面显隐

来源：互联网发布：dede 修改服务器域名编辑：程序博客网时间：2024/05/18 03:38

package com.example.administrator.lovegift;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.widget.RadioGroup;import com.example.administrator.lovegift.fragment.CategoryFragment;import com.example.administrator.lovegift.fragment.GuideFragment;import com.example.administrator.lovegift.fragment.HortFragment;import com.example.administrator.lovegift.fragment.MainFragment;import java.lang.reflect.InvocationTargetException;public class MainActivity extends BaseActivity implements RadioGroup.OnCheckedChangeListener {    private RadioGroup mRadioGroup;    private Fragment mCashFragment;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();    }    private void initView() {        mRadioGroup = (RadioGroup) findViewById(R.id.radioGroup);        mRadioGroup.setOnCheckedChangeListener(this);        //首先默认加载第一个GuideFragment        FragmentManager fm = getSupportFragmentManager();        FragmentTransaction ft = fm.beginTransaction();        mCashFragment = new GuideFragment();        ft.add(R.id.container_activity_main, mCashFragment, GuideFragment.TAG);        ft.commit();    }    /***********************     * RadioGroup.OnCheckedChangeListener的回调     ******************************/    @Override    public void onCheckedChanged(RadioGroup group, int checkedId) {        switch (checkedId) {            case R.id.controller_guide:                switchPage(GuideFragment.TAG, GuideFragment.class);                break;            case R.id.controller_hort:                switchPage(HortFragment.TAG, HortFragment.class);                break;            case R.id.controller_category:                switchPage(CategoryFragment.TAG, CategoryFragment.class);                break;            case R.id.controller_main:                switchPage(MainFragment.TAG, MainFragment.class);                break;        }    }    //切换Fragment 的方法    private void switchPage(String TAG, Class<? extends Fragment> cls) {        FragmentManager fm = getSupportFragmentManager();        FragmentTransaction tr = fm.beginTransaction();        //隐藏当前显示的页面        if (mCashFragment != null) {            tr.hide(mCashFragment);        }        //去FragmentManager栈中查找将要显示的页面是否存在        mCashFragment = fm.findFragmentByTag(TAG);        if (mCashFragment != null) {            //显示页面            tr.show(mCashFragment);        } else {            try {                mCashFragment = cls.getConstructor().newInstance();                tr.add(R.id.container_activity_main, mCashFragment, TAG);            } catch (InstantiationException e) {                e.printStackTrace();            } catch (IllegalAccessException e) {                e.printStackTrace();            } catch (InvocationTargetException e) {                e.printStackTrace();            } catch (NoSuchMethodException e) {                e.printStackTrace();            }        }        //提交        tr.commit();    }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="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="com.example.administrator.mygift.MainActivity">    <FrameLayout        android:id="@+id/container_activity_main"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1"        />    <include        layout="@layout/activity_controller"/></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:orientation="horizontal"              android:layout_width="match_parent"              android:layout_height="@dimen/activity_controller_height"              android:background="#F5F5F5"    >    <RadioGroup        android:id="@+id/radioGroup"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="horizontal"        android:gravity="center"        >        <RadioButton            android:id="@+id/controller_guide"            style="@style/below_activity"            android:text="指南"            android:drawableTop="@drawable/guide"            android:checked="true"            />        <RadioButton            android:id="@+id/controller_hort"            style="@style/below_activity"            android:text="热门"            android:drawableTop="@drawable/hort"            />        <RadioButton            android:id="@+id/controller_category"            style="@style/below_activity"            android:text="分类"            android:drawableTop="@drawable/category"            />        <RadioButton            android:id="@+id/controller_main"            style="@style/below_activity"            android:text="我的"            android:drawableTop="@drawable/main"            />    </RadioGroup></LinearLayout>

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