Andorid中Fragment简单切换案例

最新推荐文章于 2023-06-08 09:16:06 发布

白煜墨

最新推荐文章于 2023-06-08 09:16:06 发布

阅读量567

点赞数 1

分类专栏： android 文章标签： android中fragment简单切换

本文链接：https://blog.youkuaiyun.com/qq_20264531/article/details/80111809

版权

android 专栏收录该内容

14 篇文章

订阅专栏

这篇博客介绍了在Android中如何实现Fragment的简单切换，主要通过MainActivity来操作，详细讲解了HomeFragment以及其他相似Fragment的切换过程，同时提供了activity_main.xml和fragment_home.xml的布局文件设计要点。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

MainActivity

package com.xw.fragmentchange;

import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioButton;

import com.xw.fragmentchange.fragment.GiftFragment;
import com.xw.fragmentchange.fragment.HomeFragment;
import com.xw.fragmentchange.fragment.OrderFragment;
import com.xw.fragmentchange.fragment.ShareFragement;

/**
 * 演示点击标签切换对应的界面
 */
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
    private FragmentManager manager;
    private FragmentTransaction transaction;
    private RadioButton rb_home,rb_share,rb_gift,rb_order;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        manager = getFragmentManager();
        transaction = manager.beginTransaction();
        transaction.add(R.id.content_layout,new HomeFragment());
        transaction.commit();
        initView();
    }

    //初始化视图
    public void initView(){
        rb_home = findViewById(R.id.rb_home);
        rb_share = findViewById(R.id.rb_share);
        rb_gift = findViewById(R.id.rb_gift);
        rb_order = findViewById(R.id.rb_order);

        rb_home.setOnClickListener(this);
        rb_share.setOnClickListener(this);
        rb_gift.setOnClickListener(this);
        rb_order.setOnClickListener(this);
    }

    /**
     * 点击RadioButton触发的事件
     */
    @Override
    public void onClick(View view) {
        transaction = manager.beginTransaction();
        switch (view.getId()){
            case R.id.rb_home:
                transaction.replace(R.id.content_layout,new HomeFragment());
                break;
            case R.id.rb_share:
                transaction.replace(R.id.content_layout,new ShareFragement());
                break;
            case R.id.rb_gift:
                transaction.replace(R.id.content_layout,new GiftFragment());
                break;
            case R.id.rb_order:
                transaction.replace(R.id.content_layout,new OrderFragment());
                break;        }
        transaction.commit();
    }
}

HomeFragment(其余三个fragment名字不同，其余代码相同)

package com.xw.fragmentchange.fragment;

import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.xw.fragmentchange.R;

/**
 * Created by Administrator on 2018/4/27.
 */

public class HomeFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_home,null);
    }
}

布局文件:

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.xw.fragmentchange.MainActivity">
    <!--展示内容界面-->
    <LinearLayout
        android:id="@+id/content_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"></LinearLayout>
    <!--展示切换标签-->
    <LinearLayout
        android:id="@+id/layout_bottom"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:background="#ffffff"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true"
        >
        <RadioGroup
            android:id="@+id/rg_home"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="horizontal"
            >
            <RadioButton
                android:id="@+id/rb_home"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:layout_gravity="center"
                android:button="@null"
                android:drawableTop="@drawable/home_item_top"
                android:drawablePadding="10dp"
                android:gravity="center"
                android:text="首页"
                android:textColor="#B3B3B3"
                android:textSize="15sp"
                />
            <RadioButton
                android:id="@+id/rb_share"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:layout_gravity="center"
                android:button="@null"
                android:drawableTop="@drawable/home_item_top"
                android:drawablePadding="10dp"
                android:gravity="center"
                android:text="手机专享"
                android:textColor="#B3B3B3"
                android:textSize="15sp"
                />
            <RadioButton
                android:id="@+id/rb_gift"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:layout_gravity="center"
                android:button="@null"
                android:drawableTop="@drawable/home_item_top"
                android:drawablePadding="10dp"
                android:gravity="center"
                android:text="未来礼品"
                android:textColor="#B3B3B3"
                android:textSize="15sp"
                />
            <RadioButton
                android:id="@+id/rb_order"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:layout_gravity="center"
                android:button="@null"
                android:drawableTop="@drawable/home_item_top"
                android:drawablePadding="10dp"
                android:gravity="center"
                android:text="我的订单"
                android:textColor="#B3B3B3"
                android:textSize="15sp"
                />
        </RadioGroup>

    </LinearLayout>
</RelativeLayout>

fragment_home.xml

<?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">

<TextView
    android:id="@+id/tv_home"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="首页"
    android:textColor="#aa0000"
    android:textSize="30sp" />
</RelativeLayout>