無法在標題textview上設置文本

我無法使標題項目上的setText無錯地工作。我試過打電話無法在標題textview上設置文本

TextView head = (TextView) findViewById(R.id.storyTitle); 
     head.setText(st.getString(st.getColumnIndex("titledesc")));

在我的runnable中，在我的filldata（）和我的create中。如果我有第二行代碼，它會崩潰。如果沒有，它會運行，但不會得到我需要的結果。我覺得我錯過了一些東西，但不明白爲什麼這對於其他所有東西不起作用。

public class output extends ListActivity { 
    private PopupWindow pw; 
    private dbadapter mydbhelper; 
    private int getCount = inputpage.editCount; 
    private Map<Integer, String> values = inputpage.inputValues; 
    private Cursor st; 
    @Override 
    public void onCreate(Bundle savedInstantState){ 
     super.onCreate(savedInstantState); 
     setContentView(R.layout.outview); 
     mydbhelper = new dbadapter(this); 
     mydbhelper.open(); 
     fillData(); 
     } 
     //Lots of long if statements to insure all text changed has the new color, for statement only colors last item in loop  
private final Runnable mTask = new Runnable(){ 
    public void run(){ 
     TextView head = (TextView) findViewById(R.id.storyTitle); 
     head.setText(st.getString(st.getColumnIndex("titledesc"))); 

     if (getCount == 1){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
    textView.setText(modifitedText); 
       } 
     if (getCount == 2){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      textView.setText(modifitedText1); 
       } 
     if (getCount == 3){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      textView.setText(modifitedText2); 
       } 
     if (getCount == 4){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      CharSequence modifitedText3 = Replacer.replace(modifitedText2, 
        "3", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(3) +"</font>")); 
      textView.setText(modifitedText3); 
       } 
     if (getCount == 5){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      CharSequence modifitedText3 = Replacer.replace(modifitedText2, 
        "3", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(3) +"</font>")); 
      CharSequence modifitedText4 = Replacer.replace(modifitedText3, 
        "4", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(4) +"</font>")); 
      textView.setText(modifitedText4); 
       } 
     if (getCount == 6){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      CharSequence modifitedText3 = Replacer.replace(modifitedText2, 
        "3", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(3) +"</font>")); 
      CharSequence modifitedText4 = Replacer.replace(modifitedText3, 
        "4", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(4) +"</font>")); 
      CharSequence modifitedText5 = Replacer.replace(modifitedText4, 
        "5", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(5) +"</font>")); 
      textView.setText(modifitedText5); 
       } 
     if (getCount == 7){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      CharSequence modifitedText3 = Replacer.replace(modifitedText2, 
        "3", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(3) +"</font>")); 
      CharSequence modifitedText4 = Replacer.replace(modifitedText3, 
        "4", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(4) +"</font>")); 
      CharSequence modifitedText5 = Replacer.replace(modifitedText4, 
        "5", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(5) +"</font>")); 
      CharSequence modifitedText6 = Replacer.replace(modifitedText5, 
        "6", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(6) +"</font>")); 
      textView.setText(modifitedText6); 
       } 
     if (getCount == 8){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      CharSequence modifitedText3 = Replacer.replace(modifitedText2, 
        "3", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(3) +"</font>")); 
      CharSequence modifitedText4 = Replacer.replace(modifitedText3, 
        "4", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(4) +"</font>")); 
      CharSequence modifitedText5 = Replacer.replace(modifitedText4, 
        "5", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(5) +"</font>")); 
      CharSequence modifitedText6 = Replacer.replace(modifitedText5, 
        "6", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(6) +"</font>")); 
      CharSequence modifitedText7 = Replacer.replace(modifitedText6, 
        "7", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(7) +"</font>")); 
      textView.setText(modifitedText7); 
       } 
     if (getCount == 9){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      CharSequence modifitedText3 = Replacer.replace(modifitedText2, 
        "3", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(3) +"</font>")); 
      CharSequence modifitedText4 = Replacer.replace(modifitedText3, 
        "4", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(4) +"</font>")); 
      CharSequence modifitedText5 = Replacer.replace(modifitedText4, 
        "5", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(5) +"</font>")); 
      CharSequence modifitedText6 = Replacer.replace(modifitedText5, 
        "6", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(6) +"</font>")); 
      CharSequence modifitedText7 = Replacer.replace(modifitedText6, 
        "7", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(7) +"</font>")); 
      CharSequence modifitedText8 = Replacer.replace(modifitedText7, 
        "8", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(8) +"</font>")); 
      textView.setText(modifitedText8); 
       } 
     if (getCount == 10){ 
      TextView textView = (TextView)findViewById(R.id.outputText); 
      String story = textView.getText().toString(); 
      CharSequence modifitedText = Replacer.replace(story, 
       "0", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(0) +"</font>")); 
      CharSequence modifitedText1 = Replacer.replace(modifitedText, 
        "1", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(1) +"</font>")); 
      CharSequence modifitedText2 = Replacer.replace(modifitedText1, 
        "2", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(2) +"</font>")); 
      CharSequence modifitedText3 = Replacer.replace(modifitedText2, 
        "3", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(3) +"</font>")); 
      CharSequence modifitedText4 = Replacer.replace(modifitedText3, 
        "4", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(4) +"</font>")); 
      CharSequence modifitedText5 = Replacer.replace(modifitedText4, 
        "5", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(5) +"</font>")); 
      CharSequence modifitedText6 = Replacer.replace(modifitedText5, 
        "6", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(6) +"</font>")); 
      CharSequence modifitedText7 = Replacer.replace(modifitedText6, 
        "7", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(7) +"</font>")); 
      CharSequence modifitedText8 = Replacer.replace(modifitedText7, 
        "8", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(8) +"</font>")); 
      CharSequence modifitedText9 = Replacer.replace(modifitedText8, 
        "9", Html.fromHtml("<font color=\"#FFA500\">"+ values.get(9) +"</font>")); 
      textView.setText(modifitedText9); 
       } 
};}; 


private final Handler mHandler = new Handler(); 

    //fill listview with data if statement to get quickstart button to work 
    private void fillData() { 
     if(main.quickStart == "Cate"){ 
     Cursor st = mydbhelper.getStory(); 
      startManagingCursor(st); 
      String[] from = new String[] {dbadapter.KEY_TITLESTORY}; 
      int[] to = new int[] {R.id.outputText}; 
      SimpleCursorAdapter adapter = 
      new SimpleCursorAdapter(this, R.layout.out_row, st, from, to); 
      ListView list = getListView(); 
      View footer = getLayoutInflater().inflate(R.layout.outputbutton, list, false); 
      View header = getLayoutInflater().inflate(R.layout.outheader, list, false); 
      list.addHeaderView(header); 
      list.addFooterView(footer); 
     setListAdapter(adapter);} 
     if(main.quickStart == "Quick"){ 
      Cursor st = mydbhelper.getQuickStory(); 
      startManagingCursor(st); 
      String[] from = new String[] {dbadapter.KEY_TITLESTORY}; 
      int[] to = new int[] {R.id.outputText}; 
      SimpleCursorAdapter adapter = 
      new SimpleCursorAdapter(this, R.layout.out_row, st, from, to); 
      ListView list = getListView(); 
      View footer = getLayoutInflater().inflate(R.layout.outputbutton, list, false); 
      View header = getLayoutInflater().inflate(R.layout.outheader, list, false); 
      list.addHeaderView(header); 
      list.addFooterView(footer); 
     setListAdapter(adapter);} 
     } 

    public void onClickMenu(View footer){ 
     final MediaPlayer editClickSound = MediaPlayer.create(this, R.raw.button50); 
     editClickSound.start(); 
     Intent intent = new Intent(this, main.class); 
     intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
     startActivity(intent); 
     } 

    @Override 
    protected void onResume() { 
     mydbhelper.open(); 
     mHandler.postDelayed(mTask, 10); 
     super.onResume(); 
    } 

    @Override 
    protected void onPause() { 
     mydbhelper.close(); 
     super.onPause(); 
    } 
    //Menu Items 
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.layout.menu, menu); 
     return true; 
    } 

    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle item selection 
     switch (item.getItemId()) { 
      case R.id.help: 
       showHelp(); 
       return true; 
      } 
     return false; 
    } 

     private void showHelp() { 
      LayoutInflater inflater = (LayoutInflater) 
         this.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
        pw = new PopupWindow(
         inflater.inflate(R.layout.help, null, false), 
         LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, 
         true); 
        pw.showAtLocation(this.findViewById(R.id.outputText), Gravity.CENTER, 0, 0); 
     } 
     public void onClickHelp(View helper){pw.dismiss(); 

     } 
}

登錄貓

02-28 01:20:09.750: D/dalvikvm(224): GC freed 519 objects/47136 bytes in 104ms 
02-28 01:20:10.360: W/MediaPlayer(224): info/warning (1, 44) 
02-28 01:20:10.440: V/DB Exists(224): db exists 
02-28 01:20:10.730: I/MediaPlayer(224): Info (1,44) 
02-28 01:20:13.260: W/MediaPlayer(224): info/warning (1, 44) 
02-28 01:20:13.330: I/MediaPlayer(224): Info (1,44) 
02-28 01:20:14.600: W/KeyCharacterMap(224): No keyboard for id 0 
02-28 01:20:14.610: W/KeyCharacterMap(224): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 
02-28 01:20:18.851: W/MediaPlayer(224): info/warning (1, 44) 
02-28 01:20:18.910: I/MediaPlayer(224): Info (1,44) 
02-28 01:20:19.220: D/AndroidRuntime(224): Shutting down VM 
02-28 01:20:19.220: W/dalvikvm(224): threadid=3: thread exiting with uncaught exception (group=0x4001b188) 
02-28 01:20:19.220: E/AndroidRuntime(224): Uncaught handler: thread main exiting due to uncaught exception 
02-28 01:20:19.240: E/AndroidRuntime(224): java.lang.NullPointerException 
02-28 01:20:19.240: E/AndroidRuntime(224): at wanted.pro.madlibs.output$1.run(output.java:45) 
02-28 01:20:19.240: E/AndroidRuntime(224): at android.os.Handler.handleCallback(Handler.java:587) 
02-28 01:20:19.240: E/AndroidRuntime(224): at android.os.Handler.dispatchMessage(Handler.java:92) 
02-28 01:20:19.240: E/AndroidRuntime(224): at android.os.Looper.loop(Looper.java:123) 
02-28 01:20:19.240: E/AndroidRuntime(224): at android.app.ActivityThread.main(ActivityThread.java:4363) 
02-28 01:20:19.240: E/AndroidRuntime(224): at java.lang.reflect.Method.invokeNative(Native Method) 
02-28 01:20:19.240: E/AndroidRuntime(224): at java.lang.reflect.Method.invoke(Method.java:521) 
02-28 01:20:19.240: E/AndroidRuntime(224): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
02-28 01:20:19.240: E/AndroidRuntime(224): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
02-28 01:20:19.240: E/AndroidRuntime(224): at dalvik.system.NativeStart.main(Native Method) 
02-28 01:20:19.260: I/dalvikvm(224): threadid=7: reacting to signal 3 
02-28 01:20:19.300: I/dalvikvm(224): Wrote stack trace to '/data/anr/traces.txt' 
02-28 01:20:21.020: I/Process(224): Sending signal. PID: 224 SIG: 9 
02-28 01:20:21.980: D/AndroidRuntime(242): Shutting down VM 
02-28 01:20:21.980: W/dalvikvm(242): threadid=3: thread exiting with uncaught exception (group=0x4001b188) 
02-28 01:20:21.980: E/AndroidRuntime(242): Uncaught handler: thread main exiting due to uncaught exception 
02-28 01:20:22.000: E/AndroidRuntime(242): java.lang.RuntimeException: Unable to start activity ComponentInfo{wanted.pro.madlibs/wanted.pro.madlibs.inputpage}: java.lang.NullPointerException 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.os.Handler.dispatchMessage(Handler.java:99) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.os.Looper.loop(Looper.java:123) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.app.ActivityThread.main(ActivityThread.java:4363) 
02-28 01:20:22.000: E/AndroidRuntime(242): at java.lang.reflect.Method.invokeNative(Native Method) 
02-28 01:20:22.000: E/AndroidRuntime(242): at java.lang.reflect.Method.invoke(Method.java:521) 
02-28 01:20:22.000: E/AndroidRuntime(242): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
02-28 01:20:22.000: E/AndroidRuntime(242): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
02-28 01:20:22.000: E/AndroidRuntime(242): at dalvik.system.NativeStart.main(Native Method) 
02-28 01:20:22.000: E/AndroidRuntime(242): Caused by: java.lang.NullPointerException 
02-28 01:20:22.000: E/AndroidRuntime(242): at wanted.pro.madlibs.inputpage.onCreate(inputpage.java:51) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
02-28 01:20:22.000: E/AndroidRuntime(242): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459) 
02-28 01:20:22.000: E/AndroidRuntime(242): ... 11 more 
02-28 01:20:22.020: I/dalvikvm(242): threadid=7: reacting to signal 3 
02-28 01:20:22.070: I/dalvikvm(242): Wrote stack trace to '/data/anr/traces.txt' 
02-28 01:20:24.530: D/dalvikvm(250): GC freed 563 objects/48816 bytes in 78ms 
02-28 01:20:24.842: W/MediaPlayer(250): info/warning (1, 44) 
02-28 01:20:24.940: V/DB Exists(250): db exists 
02-28 01:20:25.022: I/MediaPlayer(250): Info (1,44)

大量的試驗和錯誤後，嗯，我能得到它的工作。

public class output extends ListActivity { 
    private PopupWindow pw; 
    private dbadapter mydbhelper; 
    private int getCount = inputpage.editCount; 
    private Map<Integer, String> values = inputpage.inputValues; 
    public Cursor st; 
    @Override 
    public void onCreate(Bundle savedInstantState){ 
     super.onCreate(savedInstantState); 
     setContentView(R.layout.outview); 
     mydbhelper = new dbadapter(this); 
     mydbhelper.open(); 
     fillData(); 
     TextView head = (TextView) findViewById(R.id.storyTitle); 
     st.moveToFirst(); 
     head.setText(st.getString(st.getColumnIndex(dbadapter.KEY_TITLEDESC))); 


    }

認爲關鍵是要改變，然後在正確的地點/順序調用它。 TY的所有幫助。

Cursor st = mydbhelper.getQuickStory(); 
to 
st = mydbhelper.getStory();

來源

2012-02-28 maebe

請提供您的日誌貓 – Nitin 2012-02-28 06:16:16

atextview.setText（somestring）是正確的。這工作得很好，我們沒有什麼可以告訴你的。如果您有一些意外的行爲或錯誤，請嘗試談論其中之一。 – 2012-02-28 06:22:52

您在inputpage.java中有一個NullPointerException，請提供該文件代碼以幫助您。 – 2012-02-28 06:36:41

在如果條件那麼你private void fillData()如果你是比較字符串，

if(main.quickStart == "Cate")和if(main.quickStart == "Quick")是應該的，

if(main.quickStart.equals("Cate"))

和

if(main.quickStart.equals("Quick"))

來源

2012-02-28 06:23:42 user370305

將其更改爲.equals，但仍然崩潰。除非包含head.setText（st.getString（st.getColumnIndex（「titledesc」）））; – maebe 2012-02-28 06:35:59

我認爲問題是光標st。只要刪除這兩行，TextView head =（TextView）findViewById（R.id.storyTitle）; head.setText（st.getString（st.getColumnIndex（「titledesc」）））; 並只把System.out.println（st.getString（st.getColumnIndex（「titledesc」）））;如果這也導致異常，那麼只是System.out.println（st.getCount（））;並檢查光標的大小。簡單:-) – user370305 2012-02-28 06:39:41

我認爲自從st.moveToFirst（）以來有一個問題，正在造成問題。 Bot那些system.out.println導致它崩潰。 – maebe 2012-02-28 06:47:08

在這裏onResume（），你使用你的Runnable對象。在你的runnable中，你使用Cursor c爲你的標題title設置文本。但是遊標不會在onResume中初始化，因爲你不會在那裏調用fillData（）。所以當你可運行的對象試圖訪問遊標c，它會拋出異常。

所以，你需要改變你的onResume（），如：

@Override 
    protected void onResume() { 

     super.onResume(); 
     mydbhelper.open(); 
     fillData(); 

     mHandler.postDelayed(mTask, 10); 
    }

嘗試使用this.I希望，這將解決您的問題！

來源

2012-02-28 06:23:43 Hiral

我會試試。設置的文本首先在filldata中創建。在runnable中只是我在發佈之前嘗試的最後一個地方。我會盡力的。 – maebe 2012-02-28 06:25:32

@maebe：好的，也檢查你用來獲取列索引的列的拼寫，並確保你在訪問的表中創建了該列。可能有錯誤。也可以看到，值不是空白無論如何。 – Hiral 2012-02-28 06:30:48

無法在標題textview上設置文本

回答

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