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R3L
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Hallo zusammen,
ich habe ein (kurioses?) Problem mit ListView.
Ich verwendene "Custom Rows". Zum Testen erstmal alles relativ einfach gehalten (könnte sein dass dem einen oder anderen Teile des Codes bekannt vorkommen )
Das Interessante hierbei ist: Wenn ich die App starte, sieht man zwar, dass die Rows (Reihen?) aufgelistet werden, aber ohne Inhalt. erst wenn ich runter und danach wieder hochscrolle, sieht man den Inhalt. Und daher spontan meine Frage: Wieso ?
Das gleiche Phänomen tritt auch beim Testen auf dem Handy auf (HTC Magic).
In den Logs konnte ich auch nichts entdecken, weiß allerdings auch nicht wirklich, wonach ich bei so einem Problem gucken kann
Für Anregungen wäre ich sehr dankbar.
Beste Grüße.
ich habe ein (kurioses?) Problem mit ListView.
Ich verwendene "Custom Rows". Zum Testen erstmal alles relativ einfach gehalten (könnte sein dass dem einen oder anderen Teile des Codes bekannt vorkommen )
Das Interessante hierbei ist: Wenn ich die App starte, sieht man zwar, dass die Rows (Reihen?) aufgelistet werden, aber ohne Inhalt. erst wenn ich runter und danach wieder hochscrolle, sieht man den Inhalt. Und daher spontan meine Frage: Wieso ?
Das gleiche Phänomen tritt auch beim Testen auf dem Handy auf (HTC Magic).
PHP:
package com.android.test;
import java.util.ArrayList;
import java.util.List;
import android.R.string;
import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
public class ComparisonView extends Activity{
private ItemsAdapter adapter;
static final String[] COUNTRIES = new String[] {
"Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra",
"Angola", "Anguilla", "Antarctica", "Antigua and Barbuda", "Argentina",
"Armenia", "Aruba", "Australia", "Austria", "Azerbaijan",
"Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium",
"Belize", "Benin", "Bermuda", "Bhutan", "Bolivia",
"Bosnia and Herzegovina", "Botswana", "Bouvet Island", "Brazil", "British Indian Ocean Territory",
"British Virgin Islands", "Brunei", "Bulgaria", "Burkina Faso", "Burundi",
"Cote d'Ivoire", "Cambodia", "Cameroon", "Canada", "Cape Verde",
"Cayman Islands", "Central African Republic", "Chad", "Chile", "China",
"Christmas Island", "Cocos (Keeling) Islands", "Colombia", "Comoros", "Congo",
"Cook Islands", "Costa Rica", "Croatia", "Cuba", "Cyprus", "Czech Republic",
"Democratic Republic of the Congo", "Denmark", "Djibouti", "Dominica", "Dominican Republic",
"East Timor", "Ecuador", "Egypt", "El Salvador", "Equatorial Guinea", "Eritrea",
"Estonia", "Ethiopia", "Faeroe Islands", "Falkland Islands", "Fiji", "Finland",
"Former Yugoslav Republic of Macedonia", "France", "French Guiana", "French Polynesia",
"French Southern Territories", "Gabon", "Georgia", "Germany", "Ghana", "Gibraltar",
"Greece", "Greenland", "Grenada", "Guadeloupe", "Guam", "Guatemala", "Guinea", "Guinea-Bissau",
"Guyana", "Haiti", "Heard Island and McDonald Islands", "Honduras", "Hong Kong", "Hungary",
"Iceland", "India", "Indonesia", "Iran", "Iraq", "Ireland", "Israel", "Italy", "Jamaica",
"Japan", "Jordan", "Kazakhstan", "Kenya", "Kiribati", "Kuwait", "Kyrgyzstan", "Laos",
"Latvia", "Lebanon", "Lesotho", "Liberia", "Libya", "Liechtenstein", "Lithuania", "Luxembourg",
"Macau", "Madagascar", "Malawi", "Malaysia", "Maldives", "Mali", "Malta", "Marshall Islands",
"Martinique", "Mauritania", "Mauritius", "Mayotte", "Mexico", "Micronesia", "Moldova",
"Monaco", "Mongolia", "Montserrat", "Morocco", "Mozambique", "Myanmar", "Namibia",
"Nauru", "Nepal", "Netherlands", "Netherlands Antilles", "New Caledonia", "New Zealand",
"Nicaragua", "Niger", "Nigeria", "Niue", "Norfolk Island", "North Korea", "Northern Marianas",
"Norway", "Oman", "Pakistan", "Palau", "Panama", "Papua New Guinea", "Paraguay", "Peru",
"Philippines", "Pitcairn Islands", "Poland", "Portugal", "Puerto Rico", "Qatar",
"Reunion", "Romania", "Russia", "Rwanda", "Sqo Tome and Principe", "Saint Helena",
"Saint Kitts and Nevis", "Saint Lucia", "Saint Pierre and Miquelon",
"Saint Vincent and the Grenadines", "Samoa", "San Marino", "Saudi Arabia", "Senegal",
"Seychelles", "Sierra Leone", "Singapore", "Slovakia", "Slovenia", "Solomon Islands",
"Somalia", "South Africa", "South Georgia and the South Sandwich Islands", "South Korea",
"Spain", "Sri Lanka", "Sudan", "Suriname", "Svalbard and Jan Mayen", "Swaziland", "Sweden",
"Switzerland", "Syria", "Taiwan", "Tajikistan", "Tanzania", "Thailand", "The Bahamas",
"The Gambia", "Togo", "Tokelau", "Tonga", "Trinidad and Tobago", "Tunisia", "Turkey",
"Turkmenistan", "Turks and Caicos Islands", "Tuvalu", "Virgin Islands", "Uganda",
"Ukraine", "United Arab Emirates", "United Kingdom",
"United States", "United States Minor Outlying Islands", "Uruguay", "Uzbekistan",
"Vanuatu", "Vatican City", "Venezuela", "Vietnam", "Wallis and Futuna", "Western Sahara",
"Yemen", "Yugoslavia", "Zambia", "Zimbabwe"
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.adapter = new ItemsAdapter(this, R.layout.row, this.COUNTRIES);
TextView tv = (TextView)findViewById(R.id.firstText);
tv.setText( "Anfang" );
ListView lv = (ListView)findViewById(R.id.list);
lv.setAdapter(this.adapter);
}
private class ItemsAdapter extends ArrayAdapter<String> {
private String[] items;
public ItemsAdapter(Context context, int textViewResourceId, String[] items) {
super(context, textViewResourceId, items);
this.items = items;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.row, null);
}
//Item it = this.items.get(position);
String c = this.items[position];
if (c != null) {
TextView tt = (TextView)findViewById(R.id.toptext);
if( tt != null ) {
tt.setText( c );
}
}
return v;
}
}
}
Für Anregungen wäre ich sehr dankbar.
Beste Grüße.