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我在做lazyloading来显示图像和文本。我已经得到了一切，现在，试图在视图中添加一个文本视图。但是，我的适配器与我的视图重叠。更简单的说法是，listview与textview重叠。我不确定我做错了什么，因为original example能够在列表视图下方显示按钮，但我不是。我没有收到任何错误。我的listview只是覆盖整个屏幕。任何想法可能是什么问题？Android - LazyAdapter重叠视图
main.java
public class main extends Activity {
private static final String targetURL ="http://www.google.com/images";
ListView list;
ProgressDialog dialog;
private String[] mStrings = {};
private String[] dStrings = {};
//TextView tv;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
new TheTask().execute();
list=(ListView)findViewById(R.id.list);
TextView tv = (TextView)findViewById(R.id.tv);
//tv.setText("Text View is displayed");
}
protected class TheTask extends AsyncTask<Void, Void, MyResultClass >{
protected void onPreExecute() {
dialog = ProgressDialog.show(Cats.this, "Retrieving Information", "Please wait for few seconds...", true, false);
dialog.setCancelable(true);
}
protected MyResultClass doInBackground(Void... params) {
searchContent();
MyResultClass result = new MyResultClass();
result.mStrings = mStrings;
result.dStrings = dStrings;
return result;
}
protected void onPostExecute(MyResultClass result) {
dStrings = result.dStrings;
mStrings = result.mStrings;
LazyAdapter adapter = new LazyAdapter(Cats.this, mStrings, dStrings);
list.setAdapter(adapter);
dialog.dismiss();
}
}
class MyResultClass
{
public String[] mStrings;
public String[] dStrings;
}
public void searchContent()
{
String imageC = "";
String textC = "";
try {
URL url = new URL(targetURL);
// Make the connection
URLConnection conn = url.openConnection();
BufferedReader reader = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line = reader.readLine();
Pattern sChar = Pattern.compile("&.*?;");
line.replaceAll("\\<.*?\\>", "");
Matcher msChar = sChar.matcher(line);
while (msChar.find()) line = msChar.replaceAll("");
while (line != null) {
if(line.contains("../../"))
{
int startIndex = line.indexOf("../../") + 6;
int endIndex = line.indexOf(">", startIndex + 1);
String abc = "http://www.google.com/";
String imageSrc = line.substring(startIndex,endIndex);
//complete full url
String xyz = abc +imageSrc;
xyz = xyz.substring(0,xyz.indexOf('"'));
xyz = xyz +";";
xyz = xyz.replaceAll(" ", "%20");
imageC += xyz;
mStrings = imageC.split(";");
line = reader.readLine();
}
if(line.contains("../../") == false)
{
line = reader.readLine();
}
if (line.contains("Gnametag"))
{
int startIndex = line.indexOf("Gnametag") + 10;
int endIndex = line.indexOf("<", startIndex + 1);
String gname = line.substring(startIndex,endIndex);
textC = textC.replaceAll("</span>", "");
textC += "Name: "+gname+ "\n";
}
if (line.contains("Age"))
{
textC += "Age: "+reader.readLine() + "\n" + ";";
textC = textC.replaceAll(" ", "");
dStrings = textC.split(";");
}
if (line.contains("Last Update"))
{
reader.close();
}
}
// Close the reader
reader.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
Adapter.java
public View getView(int position, View convertView, ViewGroup parent) {
View vi=convertView;
ViewHolder holder;
if(convertView==null){
vi = inflater.inflate(R.layout.item, null);
holder=new ViewHolder();
holder.text=(TextView)vi.findViewById(R.id.text);;
holder.image=(ImageView)vi.findViewById(R.id.image);
vi.setTag(holder);
}
else
holder=(ViewHolder)vi.getTag();
holder.text.setText(text[position]);
holder.image.setTag(data[position]);
imageLoader.DisplayImage(data[position], activity, holder.image);
return vi;
}
item.xml（由Adapter.java使用）
<?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="wrap_content"
android:background="#FFFFFF">
<ImageView
android:id="@+id/image"
android:layout_width="90dip"
android:layout_height="90dip"
android:src="@drawable/stub"
android:scaleType="centerCrop"
android:layout_gravity="left|center_vertical"
/>
<TextView
android:id="@+id/text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="15dip"/>
</LinearLayout>
main.xml中
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFFFFF">
<LinearLayout
android:id="@+id/linear1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#FFFFFF">
<TextView
android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Testing 123"
/>
</LinearLayout>
<LinearLayout
android:id="@+id/linear2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/linear1"
android:background="#FFFFFF">
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="30dp"/>
</LinearLayout>
</RelativeLayout>
我什么都看不到明确的问题与您的布局，它应该在没有问题的项目列表顶部显示“测试123”。您的活动可能需要详细信息。 – Jens 2012-01-04 12:55:20
是的。我没有看到任何问题，但肯定是重叠的意见。我怀疑它是从main.java – Hend 2012-01-05 13:25:43