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POProblem using tabs that contains listviews (Android)
 

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  1. POProblem using tabs that contains listviews (Android)
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    <p>I have tried to create one tabhost with two tabs. Each tab contains one listview. Here is the code for the java file</p> <pre><code>package com.Bussruter; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import android.app.AlertDialog; import android.app.TabActivity; import android.content.ActivityNotFoundException; import android.content.DialogInterface; import android.content.Intent; import android.content.res.Resources; import android.net.ConnectivityManager; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TabHost; import android.widget.TabHost.TabContentFactory; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.TabHost.OnTabChangeListener; public class Bussruter extends TabActivity implements OnTabChangeListener { /** Alle */ private static final String LIST1_TAB_TAG = "List1"; /** Nedlastet */ private static final String LIST2_TAB_TAG = "List2"; private StorageHandler sh; private Resources res;// Resource object to get Drawables private ListView lvNedlastet; private ListView lvAlle; private TabHost th; /*private int[] created = new int[]{ 0, 20100108, 0 };*/ /** Called when the activity is first created. */ @SuppressWarnings({ "unchecked", "rawtypes" }) @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //Checking which pdfs are already downloaded. sh = new StorageHandler(); this.checkAvaliablePdfs(); th = getTabHost(); res = getResources(); th.setOnTabChangedListener(this); lvAlle = (ListView) findViewById(R.id.list1); lvNedlastet = (ListView) findViewById(R.id.list2); lvAlle.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, new String[]{"1"}));//sh.getListNameAlle())); lvNedlastet.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_2, new String[]{"1"}));//sh.getListNameNedlastet())); OnItemClickListener itemCLAlle = this.createClickListenerAlle(); OnItemClickListener itemCLNedlastet = this.createClickListenerNedlastet(); lvAlle.setOnItemClickListener(itemCLAlle); lvNedlastet.setOnItemClickListener(itemCLNedlastet); OnItemLongClickListener itemLCL = this.createLongClickListener(); lvAlle.setOnItemLongClickListener(itemLCL); lvAlle.setLongClickable(true); lvNedlastet.setOnItemLongClickListener(itemLCL); lvNedlastet.setLongClickable(true); th.addTab(th.newTabSpec(LIST2_TAB_TAG) .setIndicator(LIST2_TAB_TAG, res.getDrawable(R.drawable.ic_tab_nedlastet)) .setContent(new TabContentFactory() { public View createTabContent(String arg0) { return lvNedlastet; } })); th.addTab(th.newTabSpec(LIST1_TAB_TAG) .setIndicator(LIST1_TAB_TAG, res.getDrawable(R.drawable.ic_tab_alle)) .setContent(new TabContentFactory() { public View createTabContent(String arg0) { return lvAlle; } })); th.setCurrentTabByTag(LIST1_TAB_TAG); } private OnItemLongClickListener createLongClickListener() { return new OnItemLongClickListener() { public boolean onItemLongClick(AdapterView&lt;?&gt; parent, final View view, final int position, long id) { if(isAvailable(position)){ try{ new AlertDialog.Builder(parent.getContext()) .setMessage("Vil du slette bussruten?") .setCancelable(false) .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { deleteFile(view, position); sh.availability[position] = false; } }) .setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }) .show(); }catch(Exception e){ toastText("ERROR: "+e.getMessage(), Toast.LENGTH_LONG); } return true; }else return false; } }; } private OnItemClickListener createClickListenerAlle(){ return new OnItemClickListener() { public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id){ boolean temp = sh.availability[position]; if(temp == true){ if(Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)){ File file = new File(StorageHandler.sdcardUrl+ StorageHandler.uniqueBussFilename[position]); if (file.exists()) {//open the file Uri path = Uri.fromFile(file); Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(path, "application/pdf"); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); try { startActivity(intent); } catch (ActivityNotFoundException e) { toastText("No Application Available for viewing PDF", Toast.LENGTH_LONG); } }else{ toastText("The file "+file.getAbsolutePath()+" was not found.", Toast.LENGTH_LONG); } }else{ toastText("sdkort er ikke tilgjengelig.", Toast.LENGTH_LONG); } }else{//Have to download the file. connect(); try { String absUrl = StorageHandler.webUrl[position]; InputStream inputStream = OpenHttpConnection(absUrl); File tempFile = new File(StorageHandler.sdcardUrl+StorageHandler.uniqueBussFilename[position]); File tempFile2 = new File(StorageHandler.sdcardUrl); if(!tempFile.exists()){ tempFile2.mkdirs(); tempFile.createNewFile(); } OutputStream output = new FileOutputStream(tempFile); int bytesRead; byte[] buffer = new byte[8 * 1024]; while((bytesRead = inputStream.read(buffer)) != -1){ output.write(buffer,0,bytesRead); } output.close(); inputStream.close(); toastText("Bussruten er lastet ned.", Toast.LENGTH_LONG); sh.availability[position] = true; } catch (IOException e) { toastText("ERROR:Kan ikke laste ned bussruten.\nStacktrace:\n"+e.getMessage(), Toast.LENGTH_LONG); } } } }; } private OnItemClickListener createClickListenerNedlastet(){ return new OnItemClickListener() { public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id){ boolean temp = sh.availability[position]; if(temp == true){ if(Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)){ File file = new File(StorageHandler.sdcardUrl+ StorageHandler.uniqueBussFilename[position]); if (file.exists()) {//open the file Uri path = Uri.fromFile(file); Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(path, "application/pdf"); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); try { startActivity(intent); } catch (ActivityNotFoundException e) { toastText("No Application Available for viewing PDF", Toast.LENGTH_LONG); } }else{ toastText("The file "+file.getAbsolutePath()+" was not found.", Toast.LENGTH_LONG); } }else{ toastText("sdkort er ikke tilgjengelig.", Toast.LENGTH_LONG); } } }; }; } private boolean isConnected(){ if(sh.isEmulator){ return true; }else{ ConnectivityManager connMan = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE); if (connMan.getActiveNetworkInfo().isConnected()){//getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected()) { return true; }else{ return false; } } } private void toastText(String t, int l){ final String text = t; final int length = l; Toast.makeText(getApplicationContext(), text, length).show(); } private void connect(){ if(isConnected()){ sh.isConnected = true; toastText("Kobler til...", Toast.LENGTH_SHORT); }else{ sh.isConnected = false; toastText("Bussruten har ikke blitt lastet ned.\n" + "Vennligst koble til internet for å laste ned ruten", Toast.LENGTH_LONG); } } private InputStream OpenHttpConnection(String urlString) throws IOException { InputStream in = null; int response = -1; URL url = new URL(urlString); URLConnection conn = url.openConnection(); if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection"); try{ HttpURLConnection httpConn = (HttpURLConnection) conn; httpConn.setAllowUserInteraction(false); httpConn.setInstanceFollowRedirects(true); httpConn.setRequestMethod("GET"); httpConn.connect(); response = httpConn.getResponseCode(); if (response == HttpURLConnection.HTTP_OK) { in = httpConn.getInputStream(); } } catch (Exception ex) { throw new IOException("Error connecting"); } return in; } /* private String urlWithSpaces2Percentage20(String url){ String output = ""; for(int i = 0;i&lt;url.length();i++){ char c = url.charAt(i); if(c == ' '){ output = output + "%20"; }else{ output = output + c; } } return output; } private int getCreatedDateFromFullName(String name){ return 0; }*/ private boolean isAvailable(int position){ File f = new File(StorageHandler.sdcardUrl + StorageHandler.uniqueBussFilename[position]); if(f.exists()){ return true; } return false; } private void checkAvaliablePdfs(){ for(int i = 0;i&lt;StorageHandler.uniqueBussFilename.length;i++){ File f = new File(StorageHandler.sdcardUrl + StorageHandler.uniqueBussFilename[i]); if(f.exists()){ sh.availability[i] = true; } } } private void deleteFile(View view, int index){ try{ File f = new File(StorageHandler.sdcardUrl + StorageHandler.uniqueBussFilename[index]); f.delete(); }catch(Exception e){ toastText("ERROR: "+e.getMessage(), Toast.LENGTH_LONG); } } /* private void setTextColor(View view, int id){ if(availability[id]){ view.setPressed(true); } }*/ /** * Implement logic here when a tab is selected */ @SuppressWarnings({ "unchecked", "rawtypes" }) public void onTabChanged(String tabName) { if(tabName.equals(LIST2_TAB_TAG)) { lvNedlastet.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_2, sh.getListNameNedlastet())); } else if(tabName.equals(LIST1_TAB_TAG)) { //do something } } } </code></pre> <p>And here is the code for the main.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" /&gt; &lt;FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;ListView android:id="@+id/list1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"&gt; &lt;/ListView&gt; &lt;ListView android:id="@+id/list2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"&gt; &lt;/ListView&gt; &lt;/FrameLayout&gt; &lt;/LinearLayout&gt; &lt;/TabHost&gt; </code></pre> <p>And here is the Error message from the DDMS</p> <pre><code>01-19 21:40:13.198: ERROR/AndroidRuntime(16123): Uncaught handler: thread main exiting due to uncaught exception 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:347) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.AbsListView.obtainView(AbsListView.java:1274) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.ListView.measureHeightOfChildren(ListView.java:1147) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.ListView.onMeasure(ListView.java:1060) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.View.measure(View.java:7964) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.View.measure(View.java:7964) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:888) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.LinearLayout.measureVertical(LinearLayout.java:350) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.LinearLayout.onMeasure(LinearLayout.java:278) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.View.measure(View.java:7964) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.View.measure(View.java:7964) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.View.measure(View.java:7964) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.LinearLayout.measureVertical(LinearLayout.java:464) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.LinearLayout.onMeasure(LinearLayout.java:278) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.View.measure(View.java:7964) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.View.measure(View.java:7964) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.ViewRoot.performTraversals(ViewRoot.java:763) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.view.ViewRoot.handleMessage(ViewRoot.java:1633) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.os.Handler.dispatchMessage(Handler.java:99) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.os.Looper.loop(Looper.java:123) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.app.ActivityThread.main(ActivityThread.java:4363) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at java.lang.reflect.Method.invokeNative(Native Method) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at java.lang.reflect.Method.invoke(Method.java:521) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at dalvik.system.NativeStart.main(Native Method) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): Caused by: java.lang.ClassCastException: android.widget.TwoLineListItem 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:340) 01-19 21:40:13.838: ERROR/AndroidRuntime(16123): ... 35 more </code></pre> <p>In advance. THANKS! :)</p>
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