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  • Android Fragment使用

    1.activity_main_fragment.xml

    <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:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        tools:context="mydemo.mycom.demo2.FragmentMain">
    
    
        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">
    
            <TextView
                android:id="@+id/tab1"
                android:text="社会新闻"
                android:layout_width="0dip"
                android:layout_weight="1"
                android:gravity="center"
                android:layout_height="wrap_content" />
            <TextView
                android:id="@+id/tab2"
                android:text="生活新闻"
                android:layout_width="0dip"
                android:layout_weight="1"
                android:gravity="center"
                android:layout_height="wrap_content" />
            <TextView
                android:id="@+id/tab3"
                android:text="军事新闻"
                android:layout_width="0dip"
                android:layout_weight="1"
                android:gravity="center"
                android:layout_height="wrap_content" />
            <TextView
                android:id="@+id/tab4"
                android:text="娱乐新闻"
                android:layout_width="0dip"
                android:layout_weight="1"
                android:gravity="center"
                android:layout_height="wrap_content" />
            </LinearLayout>
    
        <LinearLayout
            android:id="@+id/lv"
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent">
    
            </LinearLayout>
    
    
    
    </LinearLayout>

    2.fragment1.xml

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent" android:layout_height="match_parent">
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:text="社会新闻"/>
    </LinearLayout>

    3.fragment2.xml

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent" android:layout_height="match_parent">
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:text="生活新闻"/>
    </LinearLayout>

    4.fragment3.xml

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent" android:layout_height="match_parent">
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:text="军事新闻"/>
    </LinearLayout>

    5.fragment4.xml

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent" android:layout_height="match_parent">
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:text="娱乐新闻"/>
    </LinearLayout>

    6.FragmentMain.java

    package mydemo.mycom.demo2;
    
    
    
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentActivity;
    import android.support.v4.app.FragmentManager;
    import android.os.Bundle;
    import android.support.v4.app.FragmentTransaction;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.widget.TextView;
    
    import java.util.ArrayList;
    import java.util.List;
    
    
    public class FragmentMain extends FragmentActivity implements View.OnClickListener {
    
        private TextView tab1;
        private TextView tab2;
        private TextView tab3;
        private TextView tab4;
        private FragmentManager fm;
        private FragmentTransaction ft;
        private List<Fragment> list = new ArrayList<Fragment>();
        private List<TextView> tvList = new ArrayList<TextView>();
    
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_fragment_main);
    
            tab1 = (TextView)findViewById(R.id.tab1);
            tab2 = (TextView)findViewById(R.id.tab2);
            tab3 = (TextView)findViewById(R.id.tab3);
            tab4 = (TextView)findViewById(R.id.tab4);
            tvList.add(tab1);
            tvList.add(tab2);
            tvList.add(tab3);
            tvList.add(tab4);
    
            tab1.setOnClickListener(this);
            tab2.setOnClickListener(this);
            tab3.setOnClickListener(this);
            tab4.setOnClickListener(this);
    
            list.add(new Fragment1());
            list.add(new Fragment2());
            list.add(new Fragment3());
            list.add(new Fragment4());
    
    
            fm = getSupportFragmentManager();
            ft = fm.beginTransaction();
    
    
            tvList.get(0).setTextColor(getResources().getColor(R.color.detail_background));
            tvList.get(0).setBackgroundColor(getResources().getColor(R.color.default_background));
    
            ft.replace(R.id.lv,new Fragment1());
    
            ft.commit();
        }
    
    
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            getMenuInflater().inflate(R.menu.menu_fragment_main, menu);
            return true;
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            int id = item.getItemId();
            if (id == R.id.action_settings) {
                return true;
            }
    
            return super.onOptionsItemSelected(item);
        }
    
        @Override
        public void onClick(View view) {
            ft = fm.beginTransaction();
            switch (view.getId())
            {
                case R.id.tab1:
                    //ft.hide(list.get(0)).hide(list.get(1)).hide(list.get(2)).show(list.get(0));
                    ft.replace(R.id.lv,new Fragment1());
                    setStyle(0);
                    break;
                case R.id.tab2:
                    //ft.hide(list.get(0)).hide(list.get(1)).hide(list.get(2)).show(list.get(1));
                    ft.replace(R.id.lv,new Fragment2());
                    setStyle(1);
                    break;
                case R.id.tab3:
                    //ft.hide(list.get(0)).hide(list.get(1)).hide(list.get(2)).show(list.get(3));
                    ft.replace(R.id.lv,new Fragment3());
                    setStyle(2);
                    break;
                case R.id.tab4:
                    //ft.hide(list.get(0)).hide(list.get(1)).hide(list.get(2)).show(list.get(4));
                    ft.replace(R.id.lv,new Fragment4());
                    setStyle(3);
                    break;
            }
            ft.commit();
        }
    
        private void setStyle(int i)
        {
            for (TextView tv:tvList)
            {
                tv.setBackgroundColor(getResources().getColor(R.color.default_color));
                tv.setTextColor(getResources().getColor(R.color.black));
            }
    
    
            tvList.get(i).setTextColor(getResources().getColor(R.color.detail_background));
            tvList.get(i).setBackgroundColor(getResources().getColor(R.color.default_background));
        }
    }

    7.Fragment1.java

    package mydemo.mycom.demo2;
    
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    
    /**
     * Created by Administrator on 2015/5/25.
     */
    
    public class Fragment1 extends Fragment {
    
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            return inflater.inflate(R.layout.fragment1,null);
        }
    
    }

    8.Fragment2.java

    package mydemo.mycom.demo2;
    
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    
    /**
     * Created by Administrator on 2015/5/25.
     */
    
    public class Fragment2 extends Fragment {
    
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            return inflater.inflate(R.layout.fragment2,null);
        }
    }

    9.Fragment3.java

    package mydemo.mycom.demo2;
    
    
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    
    /**
     * Created by Administrator on 2015/5/25.
     */
    
    public class Fragment3 extends Fragment {
    
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            return inflater.inflate(R.layout.fragment3,null);
        }
    
    }

    10.Fragment4.java

    package mydemo.mycom.demo2;
    
    
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    
    /**
     * Created by Administrator on 2015/5/25.
     */
    
    public class Fragment4 extends Fragment {
    
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            return inflater.inflate(R.layout.fragment4,null);
        }
    }
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  • 原文地址:https://www.cnblogs.com/zoro-zero/p/4682112.html
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