布局问题，视图文本元素和列表项中的分隔符之间的大垂直空间
下面是list_item布局。我不明白为什么在列表项行内的viewtext elemens和divider元素之间有一个很大的垂直空间？这种布局有什么问题？
我的列表项布局xml：
<?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">
<TextView
android:id="@+id/companyName"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:singleLine="true"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="@color/table_text_selector"/>
<TextView
android:id="@+id/exchange"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="@color/table_text_light_selector"
android:layout_below="@id/companyName"/>
<TextView
android:id="@+id/symbol"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="@color/table_text_light_selector"
android:layout_below="@id/companyName"
android:layout_toLeftOf="@id/exchange"/>
<TextView
android:id="@+id/price"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:singleLine="true"
android:ellipsize="end"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="@color/table_text_selector"
android:layout_alignParentRight="true"/>
<TextView
android:id="@+id/change"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="@color/table_stock_change_text"
android:layout_alignParentRight="true"
android:layout_below="@id/price"/>
<TextView
android:id="@+id/percentChange"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="@color/table_stock_change_text"
android:layout_alignBaseline="@id/change"
android:layout_alignBottom="@id/change"
android:layout_toLeftOf="@id/change"
android:layout_marginRight="5dp"/>
</RelativeLayout>
这是片段：
public class StockListFragment extends ItemListFragment<CurrentStock> {
@Inject BootstrapServiceProvider serviceProvider;
@Inject LogoutService logoutService;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Injector.inject(this);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setEmptyText(R.string.no_stocks);
}
@Override
protected void configureList(Activity activity, ListView listView) {
super.configureList(activity, listView);
listView.setFastScrollEnabled(true);
listView.setDividerHeight(0);
getListAdapter().addHeader(activity.getLayoutInflater()
.inflate(R.layout.stock_list_item_labels, null));
}
@Override
LogoutService getLogoutService() {
return logoutService;
}
@Override
public Loader<List<CurrentStock>> onCreateLoader(int id, Bundle args) {
final List<CurrentStock> initialItems = items;
return new ThrowableLoader<List<CurrentStock>>(getActivity(), items) {
@Override
public List<CurrentStock> loadData() throws Exception {
try {
List<CurrentStock> latest = null;
if(getActivity() != null)
latest = serviceProvider.getService(getActivity()).getStocks();
if (latest != null)
return latest;
else
return Collections.emptyList();
} catch (OperationCanceledException e) {
Activity activity = getActivity();
if (activity != null)
activity.finish();
return initialItems;
}
}
};
}
public void onListItemClick(ListView l, View v, int position, long id) {
CurrentStock currentStock = ((CurrentStock) l.getItemAtPosition(position));
startActivity(new Intent(getActivity(), StockActivity.class).putExtra(STOCK, currentStock));
}
@Override
public void onLoadFinished(Loader<List<CurrentStock>> loader, List<CurrentStock> items) {
super.onLoadFinished(loader, items);
}
@Override
protected int getErrorMessage(Exception exception) {
return R.string.error_loading_stocks;
}
@Override
protected SingleTypeAdapter<CurrentStock> createAdapter(List<CurrentStock> items) {
return new StockListAdapter(getActivity().getLayoutInflater(), items);
}
}
这是适配器
public class StockListAdapter extends SingleTypeAdapter<CurrentStock> {
private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("MMMM dd");
/**
* Create adapter
*
* @param inflater
* @param items
*/
public StockListAdapter(LayoutInflater inflater, List<CurrentStock> items) {
super(inflater, R.layout.stock_list_item);
setItems(items);
}
/**
* Create adapter
*
* @param inflater
*/
public StockListAdapter(LayoutInflater inflater) {
this(inflater, null);
}
@Override
public long getItemId(final int position) {
final String id = getItem(position).getSymbol();
return !TextUtils.isEmpty(id) ? id.hashCode() : super
.getItemId(position);
}
/**/
@Override
protected int[] getChildViewIds() {
return new int[] { R.id.companyName, R.id.exchange, R.id.symbol, R.id.price, R.id.change, R.id.percentChange };
}
@Override
protected void update(int position, CurrentStock currentStock) {
setText(0, currentStock.getCompanyName());
setText(1, currentStock.getExchange());
setText(2, currentStock.getSymbol());
setText(3, currentStock.getPrice().toString());
setText(4, currentStock.getChange().toString());
setText(5, currentStock.getPercentChange());
}
}
我没有listview它selvf。顺便说一句。除了顶部和底部分隔符，我需要一个分隔符？
3 个答案:
答案 0 :(得分：0)
// try this
<?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"
android:padding="5dp">
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="0dp"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:id="@+id/companyName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:singleLine="true"
android:textColor="@color/table_text_light_selector"
android:text="companyName"
android:textAppearance="?android:attr/textAppearanceMedium"/>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="match_parent">
<TextView
android:id="@+id/symbol"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:textColor="@color/table_text_light_selector"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="symbol"/>
<TextView
android:id="@+id/exchange"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="exchange"
android:layout_marginTop="5dp"
android:layout_marginLeft="5dp"
android:textColor="@color/table_text_light_selector"
android:textAppearance="?android:attr/textAppearanceSmall"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:gravity="right"
android:orientation="vertical">
<TextView
android:id="@+id/price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:singleLine="true"
android:ellipsize="end"
android:textColor="@color/table_text_light_selector"
android:text="price"
android:textAppearance="?android:attr/textAppearanceMedium"/>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content">
<TextView
android:id="@+id/percentChange"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="percentChange"
android:layout_marginTop="5dp"
android:textColor="@color/table_text_light_selector"
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_marginRight="5dp"/>
<TextView
android:id="@+id/change"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="change"
android:layout_marginTop="5dp"
android:textColor="@color/table_text_light_selector"
android:textAppearance="?android:attr/textAppearanceSmall"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
答案 1 :(得分：0)
尝试以下代码..它将为您提供您需要的类似结果：
<?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="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center"
android:gravity="center">
<TextView
android:id="@+id/companyName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:singleLine="true"
android:text="facebook"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:textColor="@color/table_text_selector"
android:textAppearance="?android:attr/textAppearanceMedium"/>
<TextView
android:id="@+id/price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="facebook"
android:layout_marginRight="5dp"
android:textColor="@color/table_text_selector"
android:textAppearance="?android:attr/textAppearanceMedium"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center"
android:gravity="center"
android:layout_marginTop="5dp">
<TextView
android:id="@+id/exchange"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="facebook"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:textColor="@color/table_text_light_selector"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<TextView
android:id="@+id/percentChange"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="22%"
android:textColor="@color/table_stock_change_text"
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_marginRight="5dp"/>
<TextView
android:id="@+id/change"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0.0"
android:layout_marginRight="5dp"
android:textColor="@color/table_stock_change_text"
android:textAppearance="?android:attr/textAppearanceSmall"/>
</LinearLayout>
</LinearLayout>
答案 2 :(得分：0)
问题在于您使用分频器代码的代码。顺便问一下，你为什么要这样做？ ...因为ListView有divider和dividerHeight？
以下是我在使用上述布局进行编码的几分钟内得出的结果（仅删除了textColor属性）：
上面列表的代码：
public class MyListActivity extends FragmentActivity {
private ListView listView;
@Override
protected void onCreate(Bundle savedInstance) {
super.onCreate(savedInstance);
setContentView(R.layout.so_list_layout);
listView = (ListView) findViewById(R.id.localListView);
fillListView();
}
private void fillListView() {
final List<LDataRow> data = getRowData();
ArrayAdapter<LDataRow> adapter = new ArrayAdapter<MyListActivity.LDataRow>(this,
R.layout.so_list_row, data) {
private LDataRow getDataRow(int position) {
return data.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LDataRow row = getDataRow(position);
if (convertView == null) {
convertView = LayoutInflater.from(MyListActivity.this).inflate(
R.layout.so_list_row, parent, false);
}
TextView companyName = (TextView) convertView.findViewById(R.id.companyName);
companyName.setText(row.getCompanyName());
TextView exchange = (TextView) convertView.findViewById(R.id.exchange);
exchange.setText(row.getExchange());
TextView symbol = (TextView) convertView.findViewById(R.id.symbol);
symbol.setText(row.getSymbol());
TextView price = (TextView) convertView.findViewById(R.id.price);
price.setText(String.valueOf(row.getPrice()));
TextView change = (TextView) convertView.findViewById(R.id.change);
change.setText(String.valueOf(row.getChange()));
TextView percentChange = (TextView) convertView.findViewById(R.id.percentChange);
percentChange.setText(String.valueOf(row.getPercentChange()));
return convertView;
}
};
listView.setAdapter(adapter);
}
private List<LDataRow> getRowData() {
ArrayList<LDataRow> result = new ArrayList<MyListActivity.LDataRow>();
result.add(new LDataRow("Facebook", "Nasdaq", "E", 52.445, 0.0, 0));
result.add(new LDataRow("Advanced Micro", "NYSE", "D", 3.23, 0.0, 0));
result.add(new LDataRow("Genmas", "CPH", "G", -100, -3.0, -20.0));
return result;
}
private static class LDataRow {
private String companyName;
private String exchange;
private String symbol;
private double price;
private double change;
private double percentChange;
public LDataRow(String companyName, String exchange, String symbol, double price,
double change, double percentChange) {
this.companyName = companyName;
this.exchange = exchange;
this.symbol = symbol;
this.price = price;
this.change = change;
this.percentChange = percentChange;
}
public String getCompanyName() {
return companyName;
}
public String getExchange() {
return exchange;
}
public String getSymbol() {
return symbol;
}
public double getPrice() {
return price;
}
public double getChange() {
return change;
}
public double getPercentChange() {
return percentChange;
}
}
}
在顶部RelativeLayout中使用此选项以获得底部间距：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="8dp" >
编辑如果要自定义分隔符，可以很好地指定自定义可绘制和大小。以下是我使用简单layer-list，my_so_divider.xml：
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<solid android:color="#ffffff" />
</shape>
</item>
<item>
<shape android:shape="line" >
<stroke
android:width="1dp"
android:color="#000000" />
</shape>
</item>
</layer-list>
在ListView中设置：
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/localListView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00ffff"
android:divider="@drawable/my_so_divider"
android:dividerHeight="24dp"
android:footerDividersEnabled="false"
android:headerDividersEnabled="false" >
</ListView>
检查footerDividersEnabled，headerDividersEnabled，divider和dividerHeight属性...随意玩一下drawable。效果如下图：
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