Android使用DrawerLayout实现侧滑菜单效果
一、概述
DrawerLayout是一个可以方便的实现Android侧滑菜单的组件,我最近开发的项目中也有一个侧滑菜单的功能,于是DrawerLayout就派上用场了。如果你从未使用过DrawerLayout,那么本篇博客将使用一个简单的案例带你迅速掌握DrawerLayout的用法。
二、效果图
三、代码实现
主布局activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/white" android:fitsSystemWindows="true" android:orientation="vertical"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/blueStatus" android:minHeight="?attr/actionBarSize" app:navigationIcon="?attr/homeAsUpIndicator" app:theme="@style/Theme.AppCompat.NoActionBar"> </android.support.v7.widget.Toolbar> <include layout="@layout/title_layout" /> <android.support.v4.widget.DrawerLayout xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent" tools:openDrawer="start"> <ListView android:id="@+id/listView" android:layout_width="match_parent" android:layout_height="match_parent" /> <LinearLayout android:layout_width="260dp" android:layout_height="match_parent" android:layout_gravity="right"> <include layout="@layout/drawer_content" /> </LinearLayout> </android.support.v4.widget.DrawerLayout> </LinearLayout>
To use a DrawerLayout, position your primary content view as the first child with a width and height of match_parent. Add drawers as child views after the main content view and set the layout_gravity appropriately. Drawers commonly use match_parent for height with a fixed width.
当你使用DrawerLayout的时候,DrawerLayout的第一个元素就是主要内容区域(在本案例中是ListView),它的宽高必须是match_parent。
在主要内容区域的后面添加侧滑视图(在本案例中是drawer_content.xml),并且通过设置layout_gravity来决定它是左滑还是右滑,通常这个侧滑视图的高度设为match_parent。
drawer_content.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" android:background="@color/background" android:orientation="vertical" android:padding="@dimen/activity_horizontal_margin"> <TextView style="@style/NormalTextView" android:layout_width="wrap_content" android:layout_height="40dp" android:text="船中文名" /> <EditText style="@style/SmallGreyTextView" android:layout_width="match_parent" android:layout_height="40dp" android:background="@drawable/btn_round_white" android:padding="@dimen/margin_8" /> <TextView style="@style/NormalTextView" android:layout_width="wrap_content" android:layout_height="40dp" android:text="船英文名" /> <EditText style="@style/SmallGreyTextView" android:layout_width="match_parent" android:layout_height="40dp" android:background="@drawable/btn_round_white" android:padding="@dimen/margin_8" /> <TextView style="@style/NormalTextView" android:layout_width="wrap_content" android:layout_height="40dp" android:text="呼号" /> <EditText style="@style/SmallGreyTextView" android:layout_width="match_parent" android:layout_height="40dp" android:background="@drawable/btn_round_white" android:padding="@dimen/margin_8" /> <TextView style="@style/NormalTextView" android:layout_width="wrap_content" android:layout_height="40dp" android:text="IMO" /> <EditText style="@style/SmallGreyTextView" android:layout_width="match_parent" android:layout_height="40dp" android:background="@drawable/btn_round_white" android:padding="@dimen/margin_8" /> <TextView style="@style/NormalTextView" android:layout_width="wrap_content" android:layout_height="40dp" android:text="MMSI" /> <EditText style="@style/SmallGreyTextView" android:layout_width="match_parent" android:layout_height="40dp" android:background="@drawable/btn_round_white" android:padding="@dimen/margin_8" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1"> <Button android:id="@+id/btn_confirm" style="@style/NormalGreyTextView" android:layout_width="80dp" android:layout_height="36dp" android:layout_alignParentRight="true" android:layout_centerInParent="true" android:layout_gravity="center_vertical" android:background="@drawable/btn_round_red" android:gravity="center" android:text="查询" android:textColor="@color/white" /> </RelativeLayout> </LinearLayout>
这个布局文件就是侧滑视图,如图:
MainActivity.java
package com.leohan.drawerlayoutdemo; import android.os.Bundle; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.Gravity; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import butterknife.ButterKnife; import butterknife.InjectView; import butterknife.OnClick; public class MainActivity extends AppCompatActivity { @InjectView(R.id.toolbar) Toolbar toolbar; @InjectView(R.id.tv_search) TextView tvSearch; @InjectView(R.id.listView) ListView listView; @InjectView(R.id.drawer_layout) DrawerLayout drawerLayout; private List data = new ArrayList(); private ShipRecordAdapter adapter = new ShipRecordAdapter(this, data); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.inject(this); setSupportActionBar(toolbar); listView.setAdapter(adapter); getData(); } @Override public void onBackPressed() { if (drawerLayout.isDrawerOpen(GravityCompat.START)) { drawerLayout.closeDrawer(GravityCompat.START); } else { super.onBackPressed(); } } /** * 获取类别数据 */ private void getData() { for (int i = 0; i < 6; i++) { Map<String, Object> map = new HashMap<>(); data.add(map); } adapter.notifyDataSetChanged(); } @OnClick(R.id.tv_search) public void onClick(View view) { switch (view.getId()) { case R.id.tv_search: if (drawerLayout.isDrawerOpen(Gravity.RIGHT)) { drawerLayout.closeDrawer(Gravity.RIGHT); } else { drawerLayout.openDrawer(Gravity.RIGHT); } break; } } }
由于这里的侧滑视图是从右侧滑动出现的,因此侧滑视图的layout_gravity设置为right或者end,如果是左滑就设置为left或者start。当我们手动控制侧滑视图的打开或者关闭的时候,需要执行以下代码:
//close drawerLayout.closeDrawer(Gravity.RIGHT); //open drawerLayout.openDrawer(Gravity.RIGHT);
至此DrawerLayout的基本使用就已经掌握了,更深入的了解DrawerLayout,请参考Google官方文档Creating a Navigation Drawer。
项目源码:https://github.com/leoleohan/DrawerLayoutDemo
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。