Android Wear 之 WearableListView

公司昨天让搞android wear 然后下午就开始恶补。

找到官网上的关于Wear的开发教程。看到正好里面有一篇关于wearablelistview的教程。就学习了下。

在敲demo的时候还发现一个问题。就是它过时了！！！我擦，官方怎么还推荐过时的东西。但是没办法还得搞。第二天来了一看，发现已经更新为WearRecyclerView了。

先来张最终效果图：

先看布局 activity_wearlist：<?xml version="1.0" encoding="utf-8"?>
<android.support.wearable.view.BoxInsetLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.acb.myapplication104.MainActivity"
tools:deviceIds="wear">

<FrameLayout
android:id="@+id/frame_layout"
app:layout_box="left|bottom|right"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.wearable.view.WearableListView
android:id="@+id/wearlistview"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.wearable.view.WearableListView>

</FrameLayout>

</android.support.wearable.view.BoxInsetLayout>

list_item：

<?xml version="1.0" encoding="utf-8"?>
<com.example.acb.myapplication104.WearableListItemLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:gravity="center_vertical"
android:background="@color/hui"
android:layout_height="80dp">

<ImageView
android:id="@+id/circle"
android:layout_height="20dp"
android:layout_margin="16dp"
android:layout_width="20dp"
android:src="@drawable/ic_cc_clear"/>

<TextView
android:id="@+id/name"
android:gravity="center_vertical|left"
android:layout_width="wrap_content"
android:layout_marginRight="16dp"
android:layout_height="match_parent"
android:fontFamily="sans-serif-condensed-light"
android:lineSpacingExtra="-4sp"
android:textColor="@color/text_color"
android:textSize="16sp"/>

</com.example.acb.myapplication104.WearableListItemLayout>

WearableListItemLayout: 自定义item相关
public class WearableListItemLayout extends LinearLayout implements WearableListView.OnCenterProximityListener {
private ImageView mCircle;
private TextView mName;

private final float mFadedTextAlpha;
private final int mFadedCircleColor;
private final int mChosenCircleColor;

public WearableListItemLayout(Context context) {
this(context, null);
}

public WearableListItemLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}

public WearableListItemLayout(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);

//这个是未选中选项的样式
mFadedTextAlpha = getResources()
.getInteger(R.integer.action_text_faded_alpha) / 100f;
mFadedCircleColor = getResources().getColor(R.color.grey);
//选中的
mChosenCircleColor = getResources().getColor(R.color.blue);
}

// Get references to the icon and text in the item layout definition
@Override
protected void onFinishInflate() {
super.onFinishInflate();
// These are defined in the layout file for list items
// (see next section)
mCircle = (ImageView) findViewById(R.id.circle);
mName = (TextView) findViewById(R.id.name);
}

@Override
public void onCenterPosition(boolean animate) {
mName.setAlpha(1f);
// ((GradientDrawable) mCircle.getDrawable()).setColor(mChosenCircleColor);
}

@Override
public void onNonCenterPosition(boolean animate) {
// ((GradientDrawable) mCircle.getDrawable()).setColor(mFadedCircleColor);
mName.setAlpha(mFadedTextAlpha);
}

}

public class WearListViewActivity extends WearableActivity implements WearableListView.ClickListener {

// Sample dataset for the list
String[] elements = { "List Item 1", "List Item 2", "List Item 3","List Item 4","List Item 5",};

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_wearlist);
setAmbientEnabled();

WearableListView listView = (WearableListView) findViewById(R.id.wearlistview);

listView.setAdapter(new Adapter(this , elements));

listView.setClickListener(this);

}

@Override
public void onClick(WearableListView.ViewHolder viewHolder) {
Integer tag = (Integer) viewHolder.itemView.getTag();
}

@Override
public void onTopEmptyRegionClick() {

}

private static final class Adapter extends WearableListView.Adapter{

private String[] mDataset;
private final Context mContext;
private final LayoutInflater mInflater;

private Adapter(Context mContext, String[] dataset) {
this.mContext = mContext;
this.mInflater = LayoutInflater.from(mContext);
this.mDataset = dataset;
}

@Override
public WearableListView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

return new ItemViewHolder(mInflater.inflate(R.layout.list_item,null));
}

@Override
public void onBindViewHolder(WearableListView.ViewHolder holder, int position) {

ItemViewHolder itemHolder = (ItemViewHolder) holder;
TextView view = itemHolder.textView;

view.setText(mDataset[position]);

((ItemViewHolder) holder).itemView.setTag(position);

}

@Override
public int getItemCount() {
return mDataset.length;
}

public static class ItemViewHolder extends WearableListView.ViewHolder{

private TextView textView;
public ItemViewHolder(View itemView) {
super(itemView);
textView = (TextView) itemView.findViewById(R.id.name);
}
}

}
}