DrawerLayout初步了解

这个类不在android开发工具包中，在android.support.v4.widget.DrawerLayout中，能实现左右侧滑的效果。相关属性:android:layout_gravity：设置抽屉的内容从左边或者右边出来相关方法:openDrawer(Gravity.LEFT|Gravity.RIGHT)：设置左边|右边内容出来closeDrawer(Gravity.LEFT|Gravity.RIGHT)：关闭左边|右边内容出来代码示意:主框架代码:

<android.support.v4.widget.DrawerLayoutxmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/dl_main"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context="com.mixm.activity.MainActivity">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="#ff0000">

<includelayout="@layout/activity_center"/>

</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_gravity="left"

android:background="#00ff00">

<includelayout="@layout/activity_left"/>

</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_gravity="right"

android:background="#0000ff">

<includelayout="@layout/activity_right"/>

</LinearLayout>

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

中间xml文件:

<?xmlversion="1.0"encoding="utf-8"?>

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<Button

android:id="@+id/btn_openLeft"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="打开左边"

/>

<Button

android:id="@+id/btn_openRight"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:text="打开右边"

/>

</RelativeLayout>

左边屉子xml文件代码:

<?xmlversion="1.0"encoding="utf-8"?>

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<Button

android:id="@+id/btn_closeLeft"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:text="关闭"/>

</RelativeLayout>

右边屉子xml文件代码：

<?xmlversion="1.0"encoding="utf-8"?>

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<Button

android:id="@+id/btn_closeRight"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="关闭"

/>

</RelativeLayout>

java文件代码:

importandroid.app.Activity;

importandroid.os.Bundle;

importandroid.support.v4.widget.DrawerLayout;

importandroid.view.Gravity;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.widget.Button;

publicclassMainActivityextendsActivity{

	privateButtonbtn_closeLeft;

	privateButtonbtn_closeRight;

	privateButtonbtn_openLeft;

	privateButtonbtn_openRight;

	privateDrawerLayoutdl_main;

@Override

	protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

init();

}

	privatevoidinit(){

		dl_main=(DrawerLayout)findViewById(R.id.dl_main);

		btn_openLeft=(Button)findViewById(R.id.btn_openLeft);

		btn_openRight=(Button)findViewById(R.id.btn_openRight);

		btn_closeLeft=(Button)findViewById(R.id.btn_closeLeft);

		btn_closeRight=(Button)findViewById(R.id.btn_closeRight);

		//添加打开监听事件

		btn_openLeft.setOnClickListener(newOnClickListener(){

		@Override

			publicvoidonClick(Viewv){

dl_main.openDrawer(Gravity.LEFT);

	}

});

		btn_openRight.setOnClickListener(newOnClickListener(){

		@Override

			publicvoidonClick(Viewv){

dl_main.openDrawer(Gravity.RIGHT);

	}

});

		//添加关闭监听事件

		btn_closeLeft.setOnClickListener(newOnClickListener(){

		@Override

			publicvoidonClick(Viewv){

dl_main.closeDrawer(Gravity.LEFT);

	}

});

		btn_closeRight.setOnClickListener(newOnClickListener(){

		@Override

			publicvoidonClick(Viewv){

dl_main.closeDrawer(Gravity.RIGHT);

	}

});

}

}