【安卓笔记】抽屉式布局----DrawerLayout
2024-09-03 14:29:16
效果例如以下:
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DrawerLayout来自support.v4包,所以不用考虑兼容性问题。其次,这样的布局类似风靡一时的側滑菜单,可是比側滑菜单轻巧很多。
以下介绍这样的布局的使用方式。
1.在你的项目中导入support.v4包。
2.编辑一个布局,根节点为android.support.v4.widget.DrawerLayout,此节点下仅仅同意有两个子节点,第一个为将来主页面的内容,第二个节点即为"抽屉"内容,一般是一个ListView。比方:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈"
android:textColor="#000"
android:textSize="20sp" />
<Button
android:id="@+id/but_open"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="开启抽屉" />
</LinearLayout>
<!-- 一定要加 layout_gravity="start" -->
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#111"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp" />
</android.support.v4.widget.DrawerLayout>
3.编写代码,监听相关事件:
package com.example.drawerlayoutdemo1;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
public class MainActivity extends Activity
{
protected static final String TAG = "MainActivity";
private DrawerLayout mDrawerLayout = null;
private ListView lv = null;
private Button but_open = null;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
lv = (ListView) findViewById(R.id.left_drawer);
but_open = (Button) findViewById(R.id.but_open);
but_open.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
mDrawerLayout.openDrawer(Gravity.LEFT);
}
});
lv.setAdapter(new ArrayAdapter<String>(this,R.layout.test,R.id.tv_item,new String[]{"条目1","条目2","条目3"}));
mDrawerLayout.setDrawerListener(new DrawerLayout.SimpleDrawerListener()
{
@Override
public void onDrawerClosed(View drawerView)
{
Log.i(TAG,"抽屉关闭了...");
}
@Override
public void onDrawerOpened(View drawerView)
{
Log.i(TAG,"抽屉打开了...");
}
@Override
public void onDrawerSlide(View drawerView, float slideOffset)
{
Log.i(TAG,"抽屉在滑动...");
}
@Override
public void onDrawerStateChanged(int newState)
{
switch (newState)
{
case DrawerLayout.STATE_DRAGGING:
Log.i(TAG,"拖动状态");
break;
case DrawerLayout.STATE_IDLE:
Log.i(TAG,"精巧状态");
break;
case DrawerLayout.STATE_SETTLING:
Log.i(TAG,"设置状态");
break;
default:
break;
}
}
});
lv.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<? > parent, View view,
int position, long id)
{
switch (position)
{
case 0:
Log.i(TAG,"条目1被点击");
break;
case 1:
Log.i(TAG,"条目2被点击");
break;
case 2:
Log.i(TAG,"条目3被点击");
break;
}
} });
}
}
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