我正在开发WearOS应用。我正在使用ListView显示字符串列表。现在,ListView看起来像这样:
我希望单行占据整个屏幕。用户向上滑动后,第2行将占据整个屏幕。再次向上滑动,第3行将占据整个屏幕,依此类推:
我碰到了这个link,这正是我想要做的,但是第一种方法不起作用,第二种方法建议使用一个库,但是我不想将库用于任何用途似乎是一个非常简单的任务。我不想使用RecyclerView。谢谢您的帮助。
这是我主要活动的XML文件,它是ListView所在的位置。
<?xml version="1.0" encoding="utf-8"?>
<android.support.wear.widget.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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/dark_grey"
android:padding="@dimen/box_inset_layout_padding"
tools:context=".MainActivity"
tools:deviceIds="wear">
<!-- Change FrameLayout to a RelativeLayour -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/inner_frame_layout_padding"
app:boxedEdges="all">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
</android.support.wear.widget.BoxInsetLayout>
答案 0 :(得分:1)
尝试以下操作(这里的想法是通过编程将textView的高度设置为屏幕的高度):
1)MnnnnnnnActivity.class:----------
public class MnnnnnnnActivity extends AppCompatActivity {
private ListView lv;
private CustomAdapter customAdapter;
private String[] s = new String[10];
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout6);
for (int i = 0; i < 10; i++) {
s[i] = "ROW " + String.valueOf(i + 1);
}
lv = (ListView) findViewById(R.id.lv);
customAdapter = new CustomAdapter(MnnnnnnnActivity.this, s);
lv.setAdapter(customAdapter);
}
public int getScreenHeight() {
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
return displayMetrics.heightPixels;
}
}
2)CustomAdapter.class:--------
public class CustomAdapter extends ArrayAdapter<String> {
private String[] s;
private WeakReference<MnnnnnnnActivity> mActivity;
public CustomAdapter(MnnnnnnnActivity activity1, String[] s) {
super(activity1.getApplicationContext(), R.layout.list_view_item, s);
this.s = s;
mActivity = new WeakReference<MnnnnnnnActivity>(activity1);
}
@NonNull
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(mActivity != null) {
MnnnnnnnActivity activity = mActivity.get();
if (activity != null) {
if (convertView == null) {
LayoutInflater inflater = LayoutInflater.from(activity);
convertView = inflater.inflate(R.layout.list_view_item, null);
holder = new ViewHolder();
holder.tv = (TextView) convertView.findViewById(R.id.tv);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tv.setText(s[position]);
holder.tv.setHeight(activity.getScreenHeight());
}
}
return convertView;
}
private class ViewHolder {
TextView tv;
}
}
3)layout6.xml:-----------
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/lv">
</ListView>
</android.support.constraint.ConstraintLayout>
4)list_view_item.xml:----------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/tv"
android:singleLine="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="-"
android:gravity="center"
android:textSize="20sp"
android:textStyle="bold">
</TextView>
</LinearLayout>
5)注意:尽管已在电话上对此进行了测试,但可以将相同的想法用于在可售商品上实现类似的目的。另外,更好的方法是将linearLayout的高度(包含textView)设置为屏幕高度。
6)输出: