本课程将带领大家通过自定义控件实现qq5.0侧滑菜单，课程将循序渐进，首先实现最普通的侧滑菜单，然后引入属性动画与拖动菜单效果相结合，最终实现qq5.0侧滑菜单效果。通过本课程大家会对侧滑菜单有更深层次的了解，通过自定义控件和属性动画打造千变万化的侧滑菜单效果
效果图如下所示：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
package com.example;
import android.os.bundle;
import android.support.v7.app.actionbaractivity;
import android.view.view;
public class mainactivity extends actionbaractivity {
private slidingmenu mmenu;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
mmenu = (slidingmenu) findviewbyid(r.id.id_menu);
}
public void togglemenu(view view)
{
mmenu.toggle();
}
}
package com.example;
import android.app.activity;
import android.content.context;
import android.graphics.bitmap;
import android.graphics.rect;
import android.util.displaymetrics;
import android.view.view;
import android.view.windowmanager;
/**
* created by tuhao-pc on 2015/12/28.
* 获取屏幕相关的辅助类
*/
public class screenutils {
private screenutils() {
}
/**
*获取屏幕的高度
* @param context
* @return
*/
public static int getscreenwidth(context context){
windowmanager wm = (windowmanager) context.getsystemservice(context.window_service);
displaymetrics outmetrics = new displaymetrics();
wm.getdefaultdisplay().getmetrics(outmetrics);
return outmetrics.widthpixels;
}
/**
* 获取屏幕的高度
* @param context
* @return
*/
public static int getscreenheight(context context){
windowmanager wm = (windowmanager) context.getsystemservice(context.window_service);
displaymetrics outmetrics = new displaymetrics();
wm.getdefaultdisplay().getmetrics(outmetrics);
return outmetrics.heightpixels;
}
/**
* 获取手机状态栏的状态
* @param context
* @return
*/
public static int getstatusheight(context context){
int statusheight = -1;
class<?> clazz = null;
try {
clazz = class.forname("com.android.internal.r$dimen");
object object = clazz.newinstance();
int height = integer.parseint(clazz.getfield("status_bar_height").get(object).tostring());
statusheight = context.getresources().getdimensionpixelsize(height);
} catch (classnotfoundexception e) {
e.printstacktrace();
} catch (nosuchfieldexception e) {
e.printstacktrace();
} catch (instantiationexception e) {
e.printstacktrace();
} catch (illegalaccessexception e) {
e.printstacktrace();
}
return statusheight;
}
/**
* 获取当前屏幕截图，包含状态栏
*
* @param activity
* @return
*/
public static bitmap snapshotwithstatusbar(activity activity)
{
view view = activity.getwindow().getdecorview();
view.setdrawingcacheenabled(true);
view.builddrawingcache();
bitmap bmp = view.getdrawingcache();
int width = getscreenwidth(activity);
int height = getscreenheight(activity);
bitmap bp = null;
bp = bitmap.createbitmap(bmp, 0, 0, width, height);
view.destroydrawingcache();
return bp;
}
/**
* 获取当前屏幕截图，不包含状态栏
*
* @param activity
* @return
*/
public static bitmap snapshotwithoutstatusbar(activity activity)
{
view view = activity.getwindow().getdecorview();
view.setdrawingcacheenabled(true);
view.builddrawingcache();
bitmap bmp = view.getdrawingcache();
rect frame = new rect();
activity.getwindow().getdecorview().getwindowvisibledisplayframe(frame);
int statusbarheight = frame.top;
int width = getscreenwidth(activity);
int height = getscreenheight(activity);
bitmap bp = null;
bp = bitmap.createbitmap(bmp, 0, statusbarheight, width, height
- statusbarheight);
view.destroydrawingcache();
return bp;
}
}
package com.example;
import android.content.context;
import android.content.res.typedarray;
import android.util.attributeset;
import android.util.typedvalue;
import android.view.motionevent;
import android.view.viewgroup;
import android.widget.horizontalscrollview;
import android.widget.linearlayout;
import com.nineoldandroids.view.viewhelper;
/**
* created by tuhao-pc on 2015/12/28.
*/
public class slidingmenu extends horizontalscrollview{
private int mscreenwidth;
private int mmenurightpadding;
private int mmenuwidth;
private int mhalfmenuwidth;
private boolean isopen;
private boolean once;
private viewgroup mmenu;
private viewgroup mcontent;
public slidingmenu(context context) {
this(context,null);
}
public slidingmenu(context context, attributeset attrs) {
this(context, attrs, 0);
}
public slidingmenu(context context, attributeset attrs, int defstyleattr) {
super(context, attrs, defstyleattr);
mscreenwidth = screenutils.getscreenwidth(context);
typedarray a = context.gettheme().obtainstyledattributes(attrs,r.styleable.slidingmenu,defstyleattr,0);
int count = a.getindexcount();
for(int i = 0;i < count;i++){
int attr = a.getindex(i);
switch (attr){
case r.styleable.slidingmenu_rightpadding:{
// 默认是50
mmenurightpadding = a.getdimensionpixelsize(attr, (int) typedvalue.applydimension(typedvalue.complex_unit_dip,50f,getresources().getdisplaymetrics()));
break;
}
}
}
a.recycle();
}
@override
protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {
/**
* 显示设置一个宽度
*/
if(!once){
linearlayout wrapper = (linearlayout) getchildat(0);
mmenu = (viewgroup) wrapper.getchildat(0);
mcontent = (viewgroup) wrapper.getchildat(1);
mmenuwidth = mscreenwidth - mmenurightpadding;
mhalfmenuwidth = mmenuwidth/2;
mmenu.getlayoutparams().width = mmenuwidth;
mcontent.getlayoutparams().width = mscreenwidth;
}
super.onmeasure(widthmeasurespec, heightmeasurespec);
}
@override
protected void onlayout(boolean changed, int l, int t, int r, int b) {
super.onlayout(changed, l, t, r, b);
if(changed) {
// 将菜单隐藏
this.scrollto(mmenuwidth, 0);
once = true;
}
}
@override
public boolean ontouchevent(motionevent ev) {
int action = ev.getaction();
switch (action){
// up时，进行判断，如果显示区域大于菜单宽度一半则完全显示，否则隐藏
case motionevent.action_up:{
int scrollx = getscrollx();
if(scrollx > mhalfmenuwidth){
this.smoothscrollto(mmenuwidth,0);
isopen = false;
}
else{
this.smoothscrollto(0,0);
isopen = true;
}
return true;
}
}
return super.ontouchevent(ev);
}
/**
* 打开菜单
*/
public void openmenu()
{
if (isopen)
return;
this.smoothscrollto(0, 0);
isopen = true;
}
/**
* 关闭菜单
*/
public void closemenu()
{
if (isopen)
{
this.smoothscrollto(mmenuwidth, 0);
isopen = false;
}
}
/**
* 切换菜单状态
*/
public void toggle()
{
if (isopen)
{
closemenu();
} else
{
openmenu();
}
}
@override
protected void onscrollchanged(int l, int t, int oldl, int oldt)
{
super.onscrollchanged(l, t, oldl, oldt);
float scale = l * 1.0f / mmenuwidth;
float leftscale = 1 - 0.3f * scale;
float rightscale = 0.8f + scale * 0.2f;
viewhelper.setscalex(mmenu, leftscale);
viewhelper.setscaley(mmenu, leftscale);
viewhelper.setalpha(mmenu, 0.6f + 0.4f * (1 - scale));
viewhelper.settranslationx(mmenu, mmenuwidth * scale * 0.7f);
viewhelper.setpivotx(mcontent, 0);
viewhelper.setpivoty(mcontent, mcontent.getheight() / 2);
viewhelper.setscalex(mcontent, rightscale);
viewhelper.setscaley(mcontent, rightscale);
}
}
|
布局文件和资源文件（xml）
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
<?xml version="1.0" encoding="utf-8"?>
<linearlayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tu = "http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.example.slidingmenu
android:id="@+id/id_menu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/img_frame_background"
tu:rightpadding="20dp">
<linearlayout
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<include layout="@layout/layout_menu" />
<linearlayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@mipmap/qq" >
<button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onclick="togglemenu"
android:text="切换菜单" />
</linearlayout>
</linearlayout>
</com.example.slidingmenu>
</linearlayout>
<?xml version="1.0" encoding="utf-8"?>
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0000" >
<linearlayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centervertical="true"
android:orientation="vertical" >
<relativelayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<imageview
android:id="@+id/one"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_margintop="20dp"
android:src="@mipmap/img_1" />
<textview
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_torightof="@id/one"
android:text="第1个item"
android:textcolor="#f0f0f0"
android:textsize="20sp" />
</relativelayout>
<relativelayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<imageview
android:id="@+id/two"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_margintop="20dp"
android:src="@mipmap/img_2" />
<textview
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_torightof="@id/two"
android:text="第2个item"
android:textcolor="#f0f0f0"
android:textsize="20sp" />
</relativelayout>
<relativelayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<imageview
android:id="@+id/three"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_margintop="20dp"
android:src="@mipmap/img_3" />
<textview
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_torightof="@id/three"
android:text="第3个item"
android:textcolor="#f0f0f0"
android:textsize="20sp" />
</relativelayout>
<relativelayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<imageview
android:id="@+id/four"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_margintop="20dp"
android:src="@mipmap/img_4" />
<textview
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_torightof="@id/four"
android:text="第一个item"
android:textcolor="#f0f0f0"
android:textsize="20sp" />
</relativelayout>
<relativelayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<imageview
android:id="@+id/five"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_margintop="20dp"
android:src="@mipmap/img_5" />
<textview
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centervertical="true"
android:layout_marginleft="20dp"
android:layout_torightof="@id/five"
android:text="第5个item"
android:textcolor="#f0f0f0"
android:textsize="20sp" />
</relativelayout>
</linearlayout>
</relativelayout>
|