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📜  Android TabLayout和FrameLayout

📅  最后修改于: 2020-09-30 00:45:43             🧑  作者: Mango

Android TabLayout和FrameLayout

在上一页中，我们使用TabLayout和ViewPager创建了一个滑动选项卡。在这里，我们将使用TabLayout和FrameLayout创建非滑动选项卡。

通过添加android支持设计小部件的TabItem来实现TabLayout的各项。

使用FrameLayout的TabLayout示例

让我们使用FrameLayout和Fragment创建一个TabLayout示例。

文件：activity.xml

使用TabLayout和FrameLayout视图组件创建一个activity.xml文件。

文件：build.gradle

现在在build.gradle文件中提供了TabLayout的依赖库。

implementation 'com.android.support:design:26.1.0'

文件：MainActivity.java

package tablayout.example.com.tablayoutwithframelayout;

import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.FrameLayout;

public class MainActivity extends AppCompatActivity {
    TabLayout tabLayout;
    FrameLayout frameLayout;
    Fragment fragment = null;
    FragmentManager fragmentManager;
    FragmentTransaction fragmentTransaction;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tabLayout=(TabLayout)findViewById(R.id.tabLayout);
        frameLayout=(FrameLayout)findViewById(R.id.frameLayout);

        fragment = new HomeFragment();
        fragmentManager = getSupportFragmentManager();
        fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.frameLayout, fragment);
        fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
        fragmentTransaction.commit();

        tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
               // Fragment fragment = null;
                switch (tab.getPosition()) {
                    case 0:
                        fragment = new HomeFragment();
                        break;
                    case 1:
                        fragment = new JavaFragment();
                        break;
                    case 2:
                        fragment = new AndroidFragment();
                        break;
                    case 3:
                        fragment = new PhpFragment();
                        break;
                }
                FragmentManager fm = getSupportFragmentManager();
                FragmentTransaction ft = fm.beginTransaction();
                ft.replace(R.id.frameLayout, fragment);
                ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                ft.commit();
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });

    }
}

现在，为所有不同的选项卡创建不同的片段文件。

文件：HomeFragment.java

package tablayout.example.com.tablayoutwithframelayout;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class HomeFragment extends Fragment {

    public HomeFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_home, container, false);
    }

}

文件：fragment_home.xml

文件：JavaFragment.java

package tablayout.example.com.tablayoutwithframelayout;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class JavaFragment extends Fragment {

    public JavaFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_java, container, false);
    }

}

文件：fragment_java.xml

档案：AndroidFragment.java

package tablayout.example.com.tablayoutwithframelayout;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class AndroidFragment extends Fragment {

    public AndroidFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_android, container, false);
    }

}

文件：fragment_android.xml

档案：PhpFragment.java

package tablayout.example.com.tablayoutwithframelayout;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class PhpFragment extends Fragment {

    public PhpFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_php, container, false);
    }

}

文件：fragment_php.xml

文件：strings.xml


    TabLayout with FrameLayout

    
    Home fragment
    Java fragment
    Android fragment
    Php fragment

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