DrawerLayout的基本使用

DrawerLayout组件同样是V4包中的组件，也是直接继承于ViewGroup类，所以这个类也是一个容器类。使用DrawerLayout可以轻松的实现抽屉效果，使用DrawerLayout的步骤有以下1几点：

1）在DrawerLayout中，第一个子View必须是显示内容的view，并且设置它的layout_width和layout_height属性是match_parent.

2)第二个view是抽屉view,并且设置属性layout_gravity="left|right",表示是从左边滑出还是右边滑出。设置它的layout_height="match_parent"

eg:

activity_main.xml 布局文件

?

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawerlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >

<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/frag"
android:layout_width="match_parent"
android:layout_height="match_parent" />

<ListView
android:id="@+id/listview"
android:layout_width="80dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:background="#FFB5C5" />

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

MainActivity.java 代码

package com.example.drawlayout;

import android.os.Bundle;
import android.app.Activity;
import android.support.v4.widget.DrawerLayout;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.FrameLayout;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity implements OnItemClickListener {

private FrameLayout frag;
private ListView listview;
private TextView textView;
private LayoutParams params;
private DrawerLayout mDrawerLayout;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerlayout);
frag = (FrameLayout) findViewById(R.id.frag);
listview = (ListView) findViewById(R.id.listview);
String[] strs = { "新闻", "体育", "视频", "天气", "直播" };
listview.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_expandable_list_item_1, strs));
textView = new TextView(this);
params = new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
listview.setOnItemClickListener(this);

}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
frag.removeAllViews();
switch (position) {
case 0:
textView.setText("新闻");
frag.addView(textView, params);
mDrawerLayout.closeDrawers();
break;

case 1:
textView.setText("体育");
frag.addView(textView, params);
mDrawerLayout.closeDrawers();
break;
case 2:
textView.setText("视频");
frag.addView(textView, params);
mDrawerLayout.closeDrawers();
break;

case 3:
textView.setText("天气");
frag.addView(textView, params);
mDrawerLayout.closeDrawers();

break;
case 4:
textView.setText("直播");
frag.addView(textView, params);
mDrawerLayout.closeDrawers();
break;
}
}
}

注意：在android抽屉Drawer_layout开发中，需要关闭手势滑动，来滑出弹出框

mDrawer_layout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED); //关闭手势滑动

mDrawer_layout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED); //打开手势滑动

还有一种方式比较暴力 直接移除view 免得碍事

mDrawer_layout.remove(View)