侧拉DrawerLayout

最新推荐文章于 2019-02-19 19:41:23 发布

原创最新推荐文章于 2019-02-19 19:41:23 发布 · 138 阅读

0 ·

CC 4.0 BY-SA版权

咨询专栏收录该内容

13 篇文章

订阅专栏

本文介绍如何使用DrawerLayout实现侧滑菜单，并通过ListView选择不同的Fragment进行内容切换，包括代码实现和关键步骤。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

主要代码
用v4包下的DrawerLayout布局,在侧拉内容布局添加android:layout_gravity=“start”

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:id="@+id/main_drawer"
    >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <FrameLayout
            android:id="@+id/main_frag"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"></FrameLayout>

 <!--       <RadioGroup
            android:id="@+id/main_groups"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <RadioButton
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center" />

            <RadioButton
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center" />

            <RadioButton
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center" />

        </RadioGroup>-->
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:layout_gravity="start">
        <ImageView
            android:id="@+id/main_image1"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:src="@mipmap/ic_launcher"
           />
        <ListView
            android:background="#f0f0f0"
            android:id="@+id/mylv"
            android:layout_width="300dp"
            android:layout_height="0dp"
            android:layout_weight="1"
            >
        </ListView>

    </LinearLayout>

</android.support.v4.widget.DrawerLayout>

package com.exam.week_02;

import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.exam.week_02.frag.Fragment_01;
import com.exam.week_02.frag.Fragment_02;
import com.exam.week_02.frag.Fragment_03;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    private ListView listview;
    private ArrayList<String> list;
    private Fragment_01 fragment_01;
    private Fragment_02 fragment_02;
    private Fragment_03 fragment_03;
    private DrawerLayout drawerLayout;
    private ImageLoader instance;
    String url = "http://image.hnol.net/c/2016-09/16/10/201609161051172231-2127595.jpg";
    private ImageView imageView1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listview = findViewById(R.id.mylv);
        drawerLayout = findViewById(R.id.main_drawer);
        imageView1 = findViewById(R.id.main_image1);
        instance = ImageLoader.getInstance();
        DisplayImageOptions option = ImageloaderUtil.getDisplayImageOption();
        this.instance.displayImage(url, imageView1,option);
        list = new ArrayList<String>();
        for (int i =0;i<3;i++){
            list.add("Fragment_0"+(i+1));
        }
        listview.setAdapter(new Myadapter());
       FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
        fragment_01 = new Fragment_01();
        fragment_02 = new Fragment_02();
        fragment_03 = new Fragment_03();
        fragmentTransaction.add(R.id.main_frag, fragment_01);
        fragmentTransaction.add(R.id.main_frag, fragment_02);
        fragmentTransaction.add(R.id.main_frag, fragment_03);

        fragmentTransaction.hide(fragment_02);fragmentTransaction.hide(fragment_03);

        fragmentTransaction.commit();

        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
                transaction.hide(fragment_01);
                transaction.hide(fragment_02);
                transaction.hide(fragment_03);
                switch (position){
                    case 0:
                        transaction.show(fragment_01);
                        break;
                    case 1:
                        transaction.show(fragment_02);
                        break;
                    case 2:
                        transaction.show(fragment_03);
                        break;
                }
                transaction.commit();
                drawerLayout.closeDrawers();
            }
        });
    }

    class  Myadapter extends BaseAdapter{

        @Override
        public int getCount() {
            return list.size();
        }

        @Override
        public Object getItem(int position) {
            return list.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if(convertView==null){
            convertView = View.inflate(MainActivity.this,R.layout.frag_item,null);
                TextView textView = convertView.findViewById(R.id.frag_text);
                textView.setText(list.get(position));
            }
            return convertView;
        }
    }
}