一、app常用フレームワーク構築

一般的にAppは下部の4、5つのナビゲーションバーで、上には異なるtab対応のページを格納するためのFrameLayoutがあります.
基本的に毎回のコードが悪くないので、毎回書くのは面倒なのでまとめて、後で直接持ってきて使ってOKです
xmlファイル:

注意が必要なのは、radiobuttonの前の円を取り除くにはandroid:button=「@null」というものです
また、下のナビゲーションをクリックするたびに画像の色と文字の色が一緒に変わります.セレクタ画像リソースを書けばいいです.

次に、プライマリActivityのコードです.

package com.johnwharton.quanmintv;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.Window;
import android.widget.RadioGroup;
import android.widget.Toast;

import com.johnwharton.quanmintv.ui.home.HomeFragment;
import com.johnwharton.quanmintv.ui.lanmu.LanmuFragment;
import com.johnwharton.quanmintv.ui.wode.WodeFragment;
import com.johnwharton.quanmintv.ui.zhibo.ZhiboFragment;

public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener{


    private HomeFragment mHomeFragment;
    private LanmuFragment mLanmuFragment;
    private ZhiboFragment mZhiboFragment;
    private WodeFragment mWodeFragment;
    private RadioGroup rg_main;
    private Toolbar mToolbar;

    public void initView() {
        mToolbar = (Toolbar) findViewById(R.id.toolbar);
        rg_main = (RadioGroup) findViewById(R.id.rg_main);
        rg_main.setOnCheckedChangeListener(this);
        selectedFragment(0);
    }

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        initView();
        initData();

    }

    private void initData() {
        mToolbar.setNavigationIcon(R.mipmap.img_rec_logo);
        mToolbar.inflateMenu(R.menu.base_toolbar_menu);
        mToolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()){
                    case R.id.action_gift:
                        Toast.makeText(MainActivity.this,"gift",Toast.LENGTH_SHORT).show();

                        break;
                    case R.id.action_heart:
                        Toast.makeText(MainActivity.this,"heart",Toast.LENGTH_SHORT).show();

                        break;
                    case R.id.action_search:
                        Toast.makeText(MainActivity.this,"search",Toast.LENGTH_SHORT).show();


                        break;
                }

                return true;
            }
        });
    }

    protected void selectedFragment(int index) {
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction transaction = fragmentManager.beginTransaction();
        hideFragment(transaction);
        switch (index){
            case 0:
                if (mHomeFragment == null){
                    mHomeFragment = HomeFragment.getInstance();
                    transaction.add(R.id.fl_container,mHomeFragment);
                }else {
                    transaction.show(mHomeFragment);
                }

                break;
            case 1:
                if (mLanmuFragment == null){
                    mLanmuFragment = LanmuFragment.getInstance();
                    transaction.add(R.id.fl_container,mLanmuFragment);
                }else {
                    transaction.show(mLanmuFragment);
                }
                break;
            case 2:
                if (mZhiboFragment == null){
                    mZhiboFragment = ZhiboFragment.getInstance();
                    transaction.add(R.id.fl_container,mZhiboFragment);
                }else {
                    transaction.show(mZhiboFragment);
                }
                break;
            case 3:
                if (mWodeFragment == null){
                    mWodeFragment = WodeFragment.getInstance();
                    transaction.add(R.id.fl_container,mWodeFragment);
                }else {
                    transaction.show(mWodeFragment);
                }
                break;
            default:
                break;

        }
        transaction.commit();
    }

    protected void hideFragment(FragmentTransaction transaction) {
        if (mHomeFragment != null){
            transaction.hide(mHomeFragment);
        }

        if (mLanmuFragment != null){
            transaction.hide(mLanmuFragment);
        }
        if (mZhiboFragment != null){
            transaction.hide(mZhiboFragment);
        }
        if (mWodeFragment != null){
            transaction.hide(mWodeFragment);
        }

    }

    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
        switch (checkedId){
            case R.id.rb_home:
                selectedFragment(0);

                break;
            case R.id.rb_classify:
                selectedFragment(1);
                break;
            case R.id.rb_shop:
                selectedFragment(3);
                break;
            case R.id.rb_mine:
                selectedFragment(4);

                break;
        }
    }
}

Fragment私はこのように書いて、それからあなたは何が必要で、自分のFragmentをカスタマイズしましょう

public class LanmuFragment extends Fragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_lanmu,container,false);
        return view;
    }

    public static LanmuFragment getInstance(){
        return new LanmuFragment();
    }
}