FrameLayout点击按钮切换

添加权限：

网络请求+网络判断+读取外部储存的权限

 

<uses-permission android:name="android.permission.INTERNET"/>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

 

加依赖（在最上面）buildToolsVersion "26.0.2"

（最下面）图片和网络请求的依赖

compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
compile 'com.google.code.gson:gson:2.2.4'

 

====================================================================

布局：

 

<RelativeLayout 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"
tools:context="com.example.shenhuiran_0103.MainActivity">
    <LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
        <FrameLayout
android:id="@+id/fl_main"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="9" />
        <RadioGroup
android:id="@+id/group"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
android:orientation="horizontal">
            <RadioButton
android:id="@+id/but1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:gravity="center"
android:text="首页" />
            <RadioButton
android:id="@+id/but2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:gravity="center"
android:text="想法" />
            <RadioButton
android:id="@+id/but3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:gravity="center"
android:text="市场" />
            <RadioButton
android:id="@+id/but4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:gravity="center"
android:text="通知" />
            <RadioButton
android:id="@+id/but5"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:button="@null"
android:gravity="center"
android:text="更多" />
        </RadioGroup>
    </LinearLayout>
</RelativeLayout>

==========================================================

 

主要方法：

 

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.FrameLayout;
import android.widget.RadioGroup;
import com.example.shenhuiran_0103.fragment.Main1Fragment;
import com.example.shenhuiran_0103.fragment.Main2Fragment;
import com.example.shenhuiran_0103.fragment.Main3Fragment;
import com.example.shenhuiran_0103.fragment.Main4Fragment;
import com.example.shenhuiran_0103.fragment.Main5Fragment;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
    private FrameLayout fl_main;
    private RadioGroup group;
    private ArrayList<Fragment> fragments;
    private FragmentManager supportFragmentManager;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        fl_main = (FrameLayout) findViewById(R.id.fl_main);
        group = (RadioGroup) findViewById(R.id.group);
        initFragments();
        supportFragmentManager = getSupportFragmentManager();
        supportFragmentManager.beginTransaction().add(R.id.fl_main, fragments.get(0)).commit();
        //点击按钮处理切换逻辑
group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int id) {
                //i 就是你点击的那个控件的id
                //supportFragmentManager可以复用，Transaction不可复用，每次提交后事物就结束了；
switch (id) {
                    case R.id.but1:
                        supportFragmentManager.beginTransaction().replace(R.id.fl_main, fragments.get(0)).commit();
                        break;
                    case R.id.but2:
                        supportFragmentManager.beginTransaction().replace(R.id.fl_main, fragments.get(1)).commit();
                        break;
                    case R.id.but3:
                        supportFragmentManager.beginTransaction().replace(R.id.fl_main, fragments.get(2)).commit();
                        break;
                    case R.id.but4:
                        supportFragmentManager.beginTransaction().replace(R.id.fl_main, fragments.get(3)).commit();
                        break;
                    case R.id.but5:
                        supportFragmentManager.beginTransaction().replace(R.id.fl_main, fragments.get(4)).commit();
                        break;
                }
            }
        });
    }
    private void initFragments() {
        fragments = new ArrayList<>();
        fragments.add(new Main1Fragment());
        fragments.add(new Main2Fragment());
        fragments.add(new Main3Fragment());
        fragments.add(new Main4Fragment());
        fragments.add(new Main5Fragment());
    }
}

=======================================

fragment方法：

 

 

importandroid.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.example.shenhuiran_0103.R;
public class Main1Fragment extends Fragment {
    private TabLayout myTab;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = View.inflate(getActivity(), R.layout.fragment_a, null);
        myTab = view.findViewById(R.id.mytab);
        return view;
    }
    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
//添加选项卡
myTab.addTab(myTab.newTab().setText("天枢"));
        myTab.addTab(myTab.newTab().setText("天璇"));
        myTab.addTab(myTab.newTab().setText("天玑"));
        myTab.addTab(myTab.newTab().setText("天权"));
        myTab.addTab(myTab.newTab().setText("开阳"));
        myTab.addTab(myTab.newTab().setText("玉衡"));
        myTab.addTab(myTab.newTab().setText("瑶光"));
//选项卡被选中的监听事件
myTab.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                Toast.makeText(getActivity(),tab.getText().toString(),Toast.LENGTH_SHORT).show();
            }
            @Override
            public void onTabUnselected(TabLayout.Tab tab) {
            }
            @Override
            public void onTabReselected(TabLayout.Tab tab) {
            }
        });
    }
}

------------------------------------------------------------------------------------------

 

 

R.layout.fragment_a：

<!-- app:tabGravity="center" 设置居中对齐
    app:tabIndicatorColor="@color/colorAccent" 下滑线的颜色
    app:tabMode="scrollable" 设置tabLayoout菜单的模式,,,scrollable可以横向滚动 fixed:固定
    app:tabSelectedTextColor="@color/colorPrimaryDark" 选中的时候文字的颜色
    app:tabTextColor="@color/colorPrimary" 文本默认的颜色 -->
<android.support.design.widget.TabLayout
android:layout_height="50dp"
android:layout_width="match_parent"
android:id="@+id/mytab">
</android.support.design.widget.TabLayout>