本文主要是介绍android wearable 研究,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
android 4.4W.2是用于智能手表开发,建议用android studio开发,不过也可以用eclipse,因为是新系统,所以网上的demo比较少。只有在developer上可以看到几个简单的demo,但是需要翻墙,我把开发文档都保存下来:
http://download.csdn.net/detail/chaoyue0071/8369241
http://download.csdn.net/detail/chaoyue0071/8369241
开发者链接:http://developer.android.com/training/building-wearables.html
针对手表小屏幕的关系,android 有一套新的ui库去适配,具体sample可以用 sdk manager管理下载
这个库可以帮你专为可穿戴设备构建UI,一些主要的类包括:
BoxInsetLayout - 一个FrameLayout ,可以自适应屏幕形状,可以把子View填充进屏幕的中间。
CardFragment - 一个可扩展内容的Fragment,可垂直滚动的卡片
CircledImageView - 圆形的ImageView
ConfirmationActivity - 一个Activity,当用户完成某个操作的时候 会有确认动画
DismissOverlayView - 一个实现了长按消失的view
GridViewPager - 一个可以允许用户垂直和水平滑动页面的控件,可以实现一个GridPagerAdapter 来展现数据
WatchViewStub - 根据屏幕的形状来渲染一个特殊的布局的类
WearableListView - 专门为小屏幕的可穿戴设备而优化的listview,显示一个可垂直滚动的列表。当用户停止滑动的时候,会自动将最近的项吸附住。
用eclipse可以开发,等下会附录下载地址
以wearablelistview为例开发
WearableListView是适用于android小型设备如智能手表显示列表的组件,可以村子滚动,非常方便的在只能手表上显示列表控件,每次显示三个列表在屏幕中间位置。
它继承RecyclerView,实现了OnScrollListener接口。
1.
public
class
WearableListView
extends
android.support.v7.widget.RecyclerView
2.
implements
android.support.v7.widget.RecyclerView.OnScrollListener {
3.
4.
….
5.
….
6.
}
01.
package
com.technotalkative.wearablelistviewdemo;
02.
03.
import
android.app.Activity;
04.
import
android.content.Context;
05.
import
android.os.Bundle;
06.
import
android.support.wearable.view.WatchViewStub;
07.
import
android.support.wearable.view.WearableListView;
08.
import
android.view.LayoutInflater;
09.
import
android.view.ViewGroup;
10.
import
android.widget.TextView;
11.
12.
import
java.util.ArrayList;
13.
14.
public
class
SimpleListActivity
extends
Activity
implements
WearableListView.ClickListener{
15.
16.
private
WearableListView mListView;
17.
18.
@Override
19.
protected
void
onCreate(Bundle savedInstanceState) {
20.
super
.onCreate(savedInstanceState);
21.
setContentView(R.layout.activity_my);
22.
final
WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);
23.
stub.setOnLayoutInflatedListener(
new
WatchViewStub.OnLayoutInflatedListener() {
24.
@Override
25.
public
void
onLayoutInflated(WatchViewStub stub) {
26.
mListView = (WearableListView) stub.findViewById(R.id.listView1);
27.
mListView.setAdapter(
new
MyAdapter(SimpleListActivity.
this
));
28.
mListView.setClickListener(SimpleListActivity.
this
);
29.
}
30.
});
31.
}
32.
33.
private
static
ArrayList<String> listItems;
34.
static
{
35.
listItems =
new
ArrayList<String>();
36.
listItems.add(
"Monday"
);
37.
listItems.add(
"Tuesday"
);
38.
listItems.add(
"Wednesday"
);
39.
listItems.add(
"Thursday"
);
40.
listItems.add(
"Friday"
);
41.
listItems.add(
"Saturday"
);
42.
}
43.
44.
@Override
45.
public
void
onClick(WearableListView.ViewHolder viewHolder) {
46.
47.
}
48.
49.
@Override
50.
public
void
onTopEmptyRegionClick() {
51.
52.
}
53.
54.
private
class
MyAdapter
extends
WearableListView.Adapter {
55.
private
final
LayoutInflater mInflater;
56.
57.
private
MyAdapter(Context context) {
58.
mInflater = LayoutInflater.from(context);
59.
}
60.
61.
@Override
62.
public
WearableListView.ViewHolder onCreateViewHolder(ViewGroup parent,
int
viewType) {
63.
return
new
WearableListView.ViewHolder(
64.
mInflater.inflate(R.layout.row_simple_item_layout,
null
));
65.
}
66.
67.
@Override
68.
public
void
onBindViewHolder(WearableListView.ViewHolder holder,
int
position) {
69.
TextView view = (TextView) holder.itemView.findViewById(R.id.textView);
70.
view.setText(listItems.get(position).toString());
71.
holder.itemView.setTag(position);
72.
}
73.
74.
@Override
75.
public
int
getItemCount() {
76.
return
listItems.size();
77.
}
78.
}
79.
}
可以为该列表加入图标,更加漂亮
01.
private
final
class
MyItemView
extends
FrameLayout
implements
WearableListView.Item {
02.
03.
final
CircledImageView imgView;
04.
final
TextView txtView;
05.
private
float
mScale;
06.
private
final
int
mFadedCircleColor;
07.
private
final
int
mChosenCircleColor;
08.
09.
public
MyItemView(Context context) {
10.
super
(context);
11.
View.inflate(context, R.layout.row_advanced_item_layout,
this
);
12.
imgView = (CircledImageView) findViewById(R.id.image);
13.
txtView = (TextView) findViewById(R.id.text);
14.
mFadedCircleColor = getResources().getColor(android.R.color.darker_gray);
15.
mChosenCircleColor = getResources().getColor(android.R.color.holo_blue_dark);
16.
}
17.
18.
@Override
19.
public
float
getProximityMinValue() {
20.
return
mDefaultCircleRadius;
21.
}
22.
23.
@Override
24.
public
float
getProximityMaxValue() {
25.
return
mSelectedCircleRadius;
26.
}
27.
28.
@Override
29.
public
float
getCurrentProximityValue() {
30.
return
mScale;
31.
}
32.
33.
@Override
34.
public
void
setScalingAnimatorValue(
float
value) {
35.
mScale = value;
36.
imgView.setCircleRadius(mScale);
37.
imgView.setCircleRadiusPressed(mScale);
38.
}
39.
40.
@Override
41.
public
void
onScaleUpStart() {
42.
imgView.setAlpha(1f);
43.
txtView.setAlpha(1f);
44.
imgView.setCircleColor(mChosenCircleColor);
45.
}
46.
47.
@Override
48.
public
void
onScaleDownStart() {
49.
imgView.setAlpha(
0
.5f);
50.
txtView.setAlpha(
0
.5f);
51.
imgView.setCircleColor(mFadedCircleColor);
52.
}
53.
}
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