个人感觉网易的客户端比较前卫,有很多新鲜的东西,有时候模仿这些好的客户端能学到很多东西
开始今天的主要课题,下面是网易客户端抽屉模式实现的效果
其实有个Drawerlayout这个布局,你得问题就已经解决掉一大半了,Drawerlayout布局本身就提供了左划和右划的功能
先上代码,然后慢慢解答,看完这篇博客你就知道Drawerlayout怎么用了
首先上逐步局文件代码
<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" >
<FrameLayout
android:id="@+id/fragment_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
<RelativeLayout
android:id="@+id/left"
android:layout_width="200dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:background="@android:color/white">
<ListView
android:id="@+id/left_listview"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
</RelativeLayout>
<RelativeLayout
android:id="@+id/right"
android:layout_width="260dp"
android:layout_height="match_parent"
android:layout_gravity="right"
android:background="@android:color/holo_green_light">
<TextView
android:id="@+id/right_textview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="个人登陆页面" />
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
Drawerlayout是Androidv4包里自带的,既然是自带的那么直接拿来用就可以了,当然前提是你得工程里有v4包
下面解释上面的布局文件,让你懂得Drawerlayout用法,首先Drawerlayout支持左划和右划,那他是如何控制的呢?不居中告诉你,以上布局分为三部分,一般情况下,第一部分是主步局,第二部分是左划的布局,第三部分是右划的布局,其实这里的左向滑动和右向滑动是通过gravity控制,左划界面android:layout_gravity="left" 当然这里的left也可以用start代替,右划界面就理所当然的是android:layout_gravity="right" ,同样right也可以用end代替,其余的应该明白了吧!不懂留言,我认真为你解答
下面在贴一下主界面的代码,你看懂Drawerlayout用法其余的就很简单了,妈妈再也不懂担心你的学习了
package com.sdufe.thea.guo;
import java.util.ArrayList;
import java.util.List;
import com.sdufe.thea.guo.adapter.ContentAdapter;
import com.sdufe.thea.guo.model.ContentModel;
import android.os.Bundle;
import android.app.Activity;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.DrawerLayout.DrawerListener;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
private DrawerLayout drawerLayout;
private RelativeLayout leftLayout;
private RelativeLayout rightLayout;
private List<ContentModel> list;
private ContentAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawerLayout = (DrawerLayout) findViewById(R.id.drawerlayout);
leftLayout=(RelativeLayout) findViewById(R.id.left);
rightLayout=(RelativeLayout) findViewById(R.id.right);
ListView listView=(ListView) leftLayout.findViewById(R.id.left_listview);
initData();
adapter=new ContentAdapter(this, list);
listView.setAdapter(adapter);
}
private void initData() {
list=new ArrayList<ContentModel>();
list.add(new ContentModel(R.drawable.doctoradvice2, "新闻"));
list.add(new ContentModel(R.drawable.infusion_selected, "订阅"));
list.add(new ContentModel(R.drawable.mypatient_selected, "图片"));
list.add(new ContentModel(R.drawable.mywork_selected, "视频"));
list.add(new ContentModel(R.drawable.nursingcareplan2, "跟帖"));
list.add(new ContentModel(R.drawable.personal_selected, "投票"));
}
}
ok,就是这么简单啦!
CSDN代码下载:http://download.csdn.net/detail/elinavampire/8195349
github代码下载:https://github.com/zimoguo/DrawerMode
................................................源码.....................................................................
首先看Drawerlayout,他继承自ViewGroup,这里主要看一下它里面的方法,方便以后使用
/**
* Listener for monitoring events about drawers.
*/
public interface DrawerListener {
/**
* Called when a drawer's position changes.
* @param drawerView The child view that was moved
* @param slideOffset The new offset of this drawer within its range, from 0-1
*/
public void onDrawerSlide(View drawerView, float slideOffset);
/**
* Called when a drawer has settled in a completely open state.
* The drawer is interactive at this point.
*
* @param drawerView Drawer view that is now open
*/
public void onDrawerOpened(View drawerView);
/**
* Called when a drawer has settled in a completely closed state.
*
* @param drawerView Drawer view that is now closed
*/
public void onDrawerClosed(View drawerView);
/**
* Called when the drawer motion state changes. The new state will
* be one of {@link #STATE_IDLE}, {@link #STATE_DRAGGING} or {@link #STATE_SETTLING}.
*
* @param newState The new drawer motion state
*/
public void onDrawerStateChanged(int newState);
}
上面主要是监听事件的接口,通常回调的时候回用到它,里面的方法有四个,分别是onDrawerSlide(View drawerView, float slideOffset);onDrawerOpened(View drawerView);onDrawerClosed(View
drawerView);onDrawerStateChanged(int newState);
onDrawerSlide(View drawerView, float slideOffset)抽屉改变时使用
onDrawerOpened(View drawerView);打开抽屉
onDrawerClosed(View drawerView)关闭抽屉
onDrawerStateChanged(int newState);改变抽屉的状态
/**
* Set a simple drawable used for the left or right shadow.
* The drawable provided must have a nonzero intrinsic width.
*
* @param shadowDrawable Shadow drawable to use at the edge of a drawer
* @param gravity Which drawer the shadow should apply to
*/
public void setDrawerShadow(Drawable shadowDrawable, int gravity) {
/*
* TODO Someone someday might want to set more complex drawables here.
* They're probably nuts, but we might want to consider registering callbacks,
* setting states, etc. properly.
*/
final int absGravity = GravityCompat.getAbsoluteGravity(gravity,
ViewCompat.getLayoutDirection(this));
if ((absGravity & Gravity.LEFT) == Gravity.LEFT) {
mShadowLeft = shadowDrawable;
invalidate();
}
if ((absGravity & Gravity.RIGHT) == Gravity.RIGHT) {
mShadowRight = shadowDrawable;
invalidate();
}
}
上面这个方法是为了设置用于左或右阴影的简单可拉伸。所提供的可拉伸必须有一个非零固有宽度。
public void setScrimColor(int color) {
mScrimColor = color;
invalidate();
}
设置用于该掩盖的主要内容，而抽屉打开网眼织物的颜色。
public void setDrawerLockMode(int lockMode, int edgeGravity) {
final int absGravity = GravityCompat.getAbsoluteGravity(edgeGravity,
ViewCompat.getLayoutDirection(this));
if (absGravity == Gravity.LEFT) {
mLockModeLeft = lockMode;
} else if (absGravity == Gravity.RIGHT) {
mLockModeRight = lockMode;
}
if (lockMode != LOCK_MODE_UNLOCKED) {
// Cancel interaction in progress
final ViewDragHelper helper = absGravity == Gravity.LEFT ? mLeftDragger : mRightDragger;
helper.cancel();
}
switch (lockMode) {
case LOCK_MODE_LOCKED_OPEN:
final View toOpen = findDrawerWithGravity(absGravity);
if (toOpen != null) {
openDrawer(toOpen);
}
break;
case LOCK_MODE_LOCKED_CLOSED:
final View toClose = findDrawerWithGravity(absGravity);
if (toClose != null) {
closeDrawer(toClose);
}
break;
// default: do nothing
}
}
启用或禁用了所有的抽屉互动。