怎么在ViewPager中使用Fragment实现侧滑导航栏

这期内容当中小编将会给大家带来有关怎么在ViewPager中使用Fragment实现侧滑导航栏，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

Activity：

package com.example.administrator.Android006; import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.ImageButton;import android.widget.ImageView;import android.widget.LinearLayout; import com.example.administrator.android006.Fragment.fragment1;import com.example.administrator.android006.Fragment.fragment2;import com.example.administrator.android006.Fragment.fragment3;import com.example.administrator.android006.Fragment.fragment4; import java.util.ArrayList;import java.util.List; public class MainActivity extends FragmentActivity implements View.OnClickListener {     //顶部4个按钮    private LinearLayout main_home_layout,main_msg_layout,main_pal_layout,main_me_layout;    private ViewPager main_mViewPager;    //ViewPager的适配器    private FragmentPagerAdapter mAdapter;    //4个Fragment碎片的集合    private List<Fragment> mFragments = new ArrayList<>();     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);         //初始化，加载碎片        initView();        initAdapter();    }     public void initAdapter(){        mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {            @Override            public Fragment getItem(int position) {                return mFragments.get(position);            }             @Override            public int getCount() {                return mFragments.size();            }        };        main_mViewPager.setAdapter(mAdapter);        main_mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {             }             @Override            public void onPageSelected(int position) {                //重置ImageView的颜色                resetImg();                //设置选中时的图片                switch (position) {                    case 0:                        ((ImageView) main_home_layout.findViewById(R.id.main_home_img))                                .setImageResource(R.drawable.home_black);                        break;                    case 1:                        ((ImageView) main_msg_layout.findViewById(R.id.main_msg_img))                                .setImageResource(R.drawable.msg_black);                        break;                    case 2:                        ((ImageView) main_pal_layout.findViewById(R.id.main_pal_img))                                .setImageResource(R.drawable.pal_black);                        break;                    case 3:                        ((ImageView) main_me_layout.findViewById(R.id.main_me_img))                                .setImageResource(R.drawable.me_black);                        break;                }            }             @Override            public void onPageScrollStateChanged(int state) {             }        });    }     //重置ImageView的图片    protected void resetImg(){        ((ImageView) main_home_layout.findViewById(R.id.main_home_img))                .setImageResource(R.drawable.home_gray);        ((ImageView) main_msg_layout.findViewById(R.id.main_msg_img))                .setImageResource(R.drawable.msg_gray);        ((ImageView) main_pal_layout.findViewById(R.id.main_pal_img))                .setImageResource(R.drawable.pal_gray);        ((ImageView) main_me_layout.findViewById(R.id.main_me_img))                .setImageResource(R.drawable.me_gray);    }     public void initView(){        main_home_layout = findViewById(R.id.main_home_layout);        main_msg_layout = findViewById(R.id.main_msg_layout);        main_pal_layout = findViewById(R.id.main_pal_layout);        main_me_layout = findViewById(R.id.main_me_layout);        main_mViewPager = findViewById(R.id.main_mViewPager);         fragment1 vp_fr1 = new fragment1();        fragment2 vp_fr2 = new fragment2();        fragment3 vp_fr3 = new fragment3();        fragment4 vp_fr4 = new fragment4();        mFragments.add(vp_fr1);        mFragments.add(vp_fr2);        mFragments.add(vp_fr3);        mFragments.add(vp_fr4);        main_home_layout.setOnClickListener(this);        main_msg_layout.setOnClickListener(this);        main_pal_layout.setOnClickListener(this);        main_me_layout.setOnClickListener(this);    }     @Override    public void onClick(View view) {        switch (view.getId()) {            //点击首页时,设置ViewPager的下标为0            case R.id.main_home_layout:                main_mViewPager.setCurrentItem(0);                break;            //点击消息时,设置ViewPager的下标为1            case R.id.main_msg_layout:                main_mViewPager.setCurrentItem(1);                break;            //点击好友时,设置ViewPager的下标为2            case R.id.main_pal_layout:                main_mViewPager.setCurrentItem(2);                break;            //点击我时,设置ViewPager的下标为3            case R.id.main_me_layout:                main_mViewPager.setCurrentItem(3);                break;        }    }}

.xml文件中:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="Http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">     <LinearLayout        android:layout_width="match_parent"        android:layout_height="50dp"        android:orientation="horizontal"        >        <LinearLayout            android:id="@+id/main_home_layout"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center"            >            <ImageView                android:id="@+id/main_home_img"                android:layout_width="30dp"                android:layout_height="30dp"                android:src="@drawable/home_black"                android:scaleType="fitXY"                />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="首页"                />        </LinearLayout>        <LinearLayout            android:id="@+id/main_msg_layout"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center"            >            <ImageView                android:id="@+id/main_msg_img"                android:layout_width="30dp"                android:layout_height="30dp"                android:src="@drawable/msg_gray"                />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="消息"                />        </LinearLayout>        <LinearLayout            android:id="@+id/main_pal_layout"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center"            >            <ImageView                android:id="@+id/main_pal_img"                android:layout_width="30dp"                android:layout_height="30dp"                android:src="@drawable/pal_gray"                />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="好友"                />        </LinearLayout>        <LinearLayout            android:id="@+id/main_me_layout"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:orientation="vertical"            android:gravity="center"            >            <ImageView                android:id="@+id/main_me_img"                android:layout_width="30dp"                android:layout_height="30dp"                android:src="@drawable/me_gray"                />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="我"                />        </LinearLayout>    </LinearLayout>    <android.support.v4.view.ViewPager        android:id="@+id/main_mViewPager"        android:layout_width="match_parent"        android:layout_height="match_parent">     </android.support.v4.view.ViewPager></LinearLayout>

这个是ViewPager中的其中一个Fragment:

public class fragment1 extends Fragment {    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {        return inflater.inflate(R.layout.fragment1,container,false);    }}

其Fragment布局:

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"    android:layout_height="match_parent">     <TextView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:gravity="center"        android:text="我是Fragment1"        /> </android.support.constraint.ConstraintLayout>

上述就是小编为大家分享的怎么在ViewPager中使用Fragment实现侧滑导航栏了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注编程网精选频道。