Android侧拉框Demo

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不多说，直接上代码

<?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.DrawerLayout 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:id="@+id/dl"    tools:context="com.shenyudi.bmobtest.celakuang">    <!-- 主页面布局-->    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="hello world"/>    </LinearLayout>    <!-- 左部侧拉框-->    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_gravity="left"        android:id="@+id/ll_left"        android:orientation="horizontal"        >        <ListView            android:layout_width="match_parent"            android:layout_height="match_parent"            android:id="@+id/list"></ListView>    </LinearLayout>    <!-- 右部侧拉框-->    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_gravity="right"        android:id="@+id/ll_right"        android:background="@mipmap/ic_launcher"        android:orientation="horizontal"></LinearLayout></android.support.v4.widget.DrawerLayout>

有两点需要注意：1、最外面的布局不能再是5种基本布局了，需要写成android.support.v4.widget.DrawerLayout

2、侧拉框的布局需要设置layout_gravity属性，左侧拉框就写android:layout_gravity="left"，右侧同理。

package com.shenyudi.bmobtest;import android.support.v4.widget.DrawerLayout;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.widget.Adapter;import android.widget.BaseAdapter;import android.widget.LinearLayout;import android.widget.ListView;import java.security.acl.Group;public class celakuang extends AppCompatActivity {    private DrawerLayout layout;    private ListView listView;    private LinearLayout left_layout;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_celakuang);        //初始化DrawerLayout        layout=(DrawerLayout) findViewById(R.id.dl);        listView= (ListView) findViewById(R.id.list);        //给listview设置适配器        listView.setAdapter(new MyAdapter());    }    /*若不写此方法，会直接在主界面中显示左右侧拉框里的内容      不是侧拉才显示*/    public void left(View v){        layout.openDrawer(Gravity.LEFT);    }    public void right(View view){        layout.openDrawer(Gravity.RIGHT);    }    public class MyAdapter extends BaseAdapter {        @Override        public int getCount() {            return 10;        }        @Override        public Object getItem(int position) {            return null;        }        @Override        public long getItemId(int position) {            return 0;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            return View.inflate(getApplication(),R.layout.list_celakuang,null);        }    }}

核心代码：

public void left(View v){        layout.openDrawer(Gravity.LEFT);    }    public void right(View view){        layout.openDrawer(Gravity.RIGHT);    }

写这么几行代码就可以实现侧拉框

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