当我的 Activity 在 Samsung Galaxy Y 和 Ace Plus 上加载时 - mDPI/Ldpi 屏幕。 ListView 文本和内容未加载。触摸并尝试滚动时，会出现内容。
但它在我的开发手机 Samsung S2 上完美运行
经过一些测试，我发现这种情况仅发生在 2.X 版本的 Android 上。
MainActivity.java
private final String[] places = new String[] { "Mysore", "Bangalore",
"Mangalore", "Wayanad", "Bandipur National Park National Park",
"Chickmaglur", "Bandipura", "Coorg", "Kodaikanal", "Hampi",
"Ghati Subramanya", "Mekedatu", "Muththathhi", "Shivasamudram",
"Talakadu", "Savana Durga" };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
setContentView(R.layout.activity_main);
context = this;
Log.i("Nomad", "onCreate");
List<Place> thePlaces = new ArrayList<Place>();
for (int i = 0; i < places.length; i++) {
Place pl = new Place("NO_ID", places[i], "NO_DISTANCE",
"NO_CATEGORYICON");
thePlaces.add(pl);
}
listView = (ListView) findViewById(R.id.place_list);
listView.setEmptyView(findViewById(R.id.empty));
adapter = new PlacesListAdapter(MainActivity.this,
R.layout.list_item_place, thePlaces);
listView.setAdapter(adapter);
listView.setTextFilterEnabled(true);
mSearchView = (SearchView) findViewById(R.id.action_search);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> a, View view, int position,
long id) {
startActivity(new Intent(MainActivity.this, PlaceActivity.class));
}
});
}
PlacesListAdapter.java
public class PlacesListAdapter extends ArrayAdapter<Place> implements
Filterable {
public Context context;
private List<Place> orig, itemDetailsrrayList;
private PlaceFilter filter;
public PlacesListAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
}
public PlacesListAdapter(Context context, int resource, List<Place> places) {
super(context, resource, places);
this.context = context;
// this.places = places;
itemDetailsrrayList = places;
orig = new ArrayList<Place>(itemDetailsrrayList);
filter = new PlaceFilter();
// imageLoader = new ImageLoader(context.getApplicationContext());
}
public int getCount() {
return itemDetailsrrayList.size();
}
public Place getItem(int position) {
return itemDetailsrrayList.get(position);
}
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
// View view = convertView;
// Place p = places.get(position);
if (convertView == null) {
LayoutInflater viewInflater;
viewInflater = LayoutInflater.from(getContext());
convertView = viewInflater.inflate(R.layout.list_item_place, null);
holder = new ViewHolder();
holder.placeTitle = (TextView) convertView
.findViewById(R.id.place_title);
holder.placeDistance = (TextView) convertView
.findViewById(R.id.place_distance);
holder.placeCategoryIcon = (ImageView) convertView
.findViewById(R.id.place_category_icon);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.placeTitle.setText(itemDetailsrrayList.get(position)
.getPlaceTitle());
holder.placeDistance.setText("200");
holder.placeCategoryIcon.setImageResource(R.drawable.icon_category);
// Setting Alternative Row Colors
if (position % 2 == 0) {
convertView.setBackgroundResource(R.drawable.list_view_place_row_1);
} else {
convertView.setBackgroundResource(R.drawable.list_view_place_row_2);
}
return convertView;
}
static class ViewHolder {
TextView placeId;
TextView placeTitle;
TextView placeDistance;
ImageView placeCategoryIcon;
}
@Override
public Filter getFilter() {
// TODO Auto-generated method stub
return filter;
}
private class PlaceFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults oReturn = new FilterResults();
ArrayList<Place> results = new ArrayList<Place>();
if (orig == null)
orig = itemDetailsrrayList;
if (constraint != null) {
if (orig != null && orig.size() > 0) {
for (Place g : orig) {
if (g.getPlaceTitle()
.toLowerCase()
.startsWith(constraint.toString().toLowerCase()))
results.add(g);
}
}
oReturn.values = results;
}
return oReturn;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
itemDetailsrrayList = (ArrayList<Place>) results.values;
notifyDataSetChanged();
}
}
}
ativty_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/primary_white"
android:orientation="vertical" >
<ListView
android:id="@+id/place_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:cacheColorHint="#00000000"
android:fadingEdge="none" >
</ListView>
<TextView
android:id="@+id/empty"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="20dp"
android:text="@string/list_view_place_empty"
android:textColor="@color/black"
android:textSize="18sp" />
</LinearLayout>
ListView 行 XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="10dp"
android:paddingTop="10dp" >
<ImageView
android:id="@+id/place_category_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:contentDescription="ss"
android:paddingLeft="10dp"
android:paddingRight="15dp"
android:src="@drawable/icon_category" />
<TextView
android:id="@+id/place_distance"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:paddingRight="15dp"
android:text="320" />
<TextView
android:id="@+id/place_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toRightOf="@+id/place_category_icon"
android:ellipsize="end"
android:paddingRight="50dp"
android:singleLine="true"
android:text="Place Name"
android:textColor="#191919"
android:textSize="18sp" />
</RelativeLayout>
在 Logcat 中找到了这个
12-23 19:58:28.033: E/ResourceType(631): Style contains key with bad entry: 0x010102f3
12-23 19:58:28.083: E/ResourceType(631): Style contains key with bad entry: 0x0101030b
12-23 19:58:28.083: E/ResourceType(631): Style contains key with bad entry: 0x0101039c
12-23 19:58:28.083: E/ResourceType(631): Style contains key with bad entry: 0x010103e1
12-23 19:58:31.852: E/ResourceType(631): Style contains key with bad entry: 0x010102f3
12-23 19:58:31.852: E/ResourceType(631): Style contains key with bad entry: 0x0101030b
12-23 19:58:31.852: E/ResourceType(631): Style contains key with bad entry: 0x0101039c
12-23 19:58:31.852: E/ResourceType(631): Style contains key with bad entry: 0x010103e1
12-23 19:58:31.934: I/Nomad(631): onCreate
12-23 19:58:32.074: I/Nomad(631): onCreateOptionsMenu
12-23 19:58:32.144: D/dalvikvm(631): GC_EXTERNAL_ALLOC freed 140K, 50% free 2834K/5639K, external 2844K/2844K, paused 59ms
12-23 19:58:32.264: I/Nomad(631): after setupSearchView()
12-23 19:58:32.264: W/KeyCharacterMap(631): No keyboard for id -1
12-23 19:58:32.264: W/KeyCharacterMap(631): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
12-23 19:58:32.473: D/dalvikvm(631): GC_EXTERNAL_ALLOC freed 41K, 50% free 2847K/5639K, external 3060K/3369K, paused 60ms
color.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="white">#FFFFFF</color>
<color name="black">#333333</color>
<color name="primary_white">#f2f2f2</color>
<color name="dark_bg">#161616</color>
<!-- Place List View -->
<color name="list_view_place_row_1">#f2f2f2</color>
<color name="list_view_place_row_2">#e7e7e7</color>
<color name="list_view_place_selected">#CFCFCF</color>
<!-- Place List View -->
<color name="primary_color">#E5492A</color>
<color name="primary_color_inverse">#c33518</color>
</resources>
styles.xml
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Nomad Theme -->
<style name="Theme.Nomad" parent="Theme.Sherlock.Light">
<item name="android:actionBarStyle">@style/Widget.Nomad.ActionBar</item>
<item name="actionBarStyle">@style/Widget.Nomad.ActionBar</item>
<item name="android:actionBarItemBackground">@drawable/actionbar_selectable_background</item>
<item name="actionBarItemBackground">@drawable/actionbar_selectable_background</item>
<item name="android:actionBarTabStyle">@style/MyActionBarTabStyle</item>
<item name="actionBarTabStyle">@style/MyActionBarTabStyle</item>
<item name="android:homeAsUpIndicator">@drawable/abs__ic_ab_back_holo_light</item>
<item name="homeAsUpIndicator">@drawable/abs__ic_ab_back_holo_light</item>
<item name="*android:actionModeShareDrawable">@drawable/ic_menu_share</item>
<item name="actionModeShareDrawable">@drawable/ic_menu_share</item>
<item name="searchViewSearchIcon">@drawable/ic_menu_search</item>
</style>
<style name="Widget.Nomad.ActionBar" parent="Widget.Sherlock.ActionBar">
<item name="android:background">#E5492A</item>
<item name="background">#E5492A</item>
<item name="android:titleTextStyle">@style/TitleText</item>
<item name="titleTextStyle">@style/TitleText</item>
</style>
<style name="TitleText" parent="TextAppearance.Sherlock.Widget.ActionBar.Title">
<item name="android:textColor">@color/white</item>
</style>
<style name="MyActionBarTabStyle" parent="Widget.Sherlock.Light.ActionBar.TabBar">
<item name="android:background">@drawable/actionbar_tab_bg</item>
<item name="android:textAlignment">center</item>
<item name="android:gravity">center</item>
</style>
</resources>
最佳答案
请尝试将此属性添加到 xml 中的 ListView
android:cacheColorHint = "@android:color/transparent"
要删除黑色区域，请在 ListView 中使用 android:fadingEdge="none"
关于Android ListView 文本在加载时消失，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14009262/