我正在开发应用程序来向多个 TableView 添加动态数据。结构如下。

我在 onPostExecute 中的代码是:

    protected void onPostExecute(List<String> results){
int ind,i = 0;
ScrollView sv=null;
TableLayout tl=null;
TableRow tr = null;
int mjsonlength=results.size();
if(results!=null){

 TableLayout indextl=(TableLayout)findViewById(R.id.indextablelayout);
    TableRow indextr=new TableRow(SubProducts.this);
    //indext1.moveToFirst();
    LinearLayout llt=(LinearLayout)findViewById(R.id.alltablell);
    //for(int f=0;f<mjsonlength;f++){

        for( ind=0;ind<indextitle.size();ind++)
        {

            TextView indextv=new TextView(SubProducts.this);
            indextv.setBackgroundResource(R.drawable.greenbg);
            indextv.setHeight(25);
            indextv.setWidth(50);
            indextv.setId(6);
            indextv.setTextColor(Color.WHITE);
            indextv.setText(indextitle.get(ind));
            indextv.setPadding(20,10,6,3);
            indextr.addView(indextv);

            indextl.addView(indextr,6);

            sv=new ScrollView(SubProducts.this);
             tl=new TableLayout(SubProducts.this);
             for( i=0;i<mjsonlength;i++){
                    tr=new TableRow(SubProducts.this);

                    if(ind==i)  {

                        RelativeLayout rl=new RelativeLayout(SubProducts.this);
                        Resources res = getResources(); //resource handle
                          rl.setBackgroundResource(R.drawable.prd_box);

                         RelativeLayout.LayoutParams newParams1 = new RelativeLayout.LayoutParams(
                                    RelativeLayout.LayoutParams.WRAP_CONTENT,
                                    RelativeLayout.LayoutParams.WRAP_CONTENT);

                            image=new ImageView(SubProducts.this);
                            image.setLayoutParams(newParams1);
                            image.setId(1);
                            image.setImageBitmap(bmp);
                            image.setPadding(5, 20, 5, 5);
                            rl.addView(image,1);



                          RelativeLayout.LayoutParams lprams = new RelativeLayout.LayoutParams(
                                    RelativeLayout.LayoutParams.WRAP_CONTENT,
                                    RelativeLayout.LayoutParams.WRAP_CONTENT);
                            lprams.addRule(RelativeLayout.RIGHT_OF, 1);

                          TextView tv1=new TextView(SubProducts.this);
                        Spanned marked_up = Html.fromHtml(description.get(i));
                        tv1.setText((marked_up.toString()).substring(1, 170).replaceAll("&nbsp;",""));
                        tv1.setLayoutParams(lprams);
                        tv1.setId(2);
                        tv1.setHeight(150);
                        tv1.setWidth(130);
                        tv1.setPadding(20, 10, 0, 10);
                        rl.addView(tv1,2);


                         RelativeLayout.LayoutParams newParams = new RelativeLayout.LayoutParams(
                                    RelativeLayout.LayoutParams.WRAP_CONTENT,
                                    RelativeLayout.LayoutParams.WRAP_CONTENT);
                         newParams.addRule(RelativeLayout.BELOW, 2);
                        TextView tv=new TextView(SubProducts.this);
                        tv.setText(productname.get(i));
                        tv.setLayoutParams(newParams);
                        tv.setTextColor(Color.WHITE);
                        tv.setId(3);
                        tv.setPadding(10, 0, 0, 10);
                        rl.addView(tv,3);


                        tr.addView(rl);
                        tr.setPadding(5, 10, 5, 10);


                    }
                    tl.addView(tr);

            }

             sv.addView(tl);

                llt.addView(sv);

        }

    }

我收到如下错误:

     03-16 06:27:07.452: E/AndroidRuntime(7233): FATAL EXCEPTION: main
      03-16 06:27:07.452: E/AndroidRuntime(7233): java.lang.IllegalStateException: The 03-16 06:27:07.452: E/AndroidRuntime(7233): FATAL EXCEPTION: main
03-16 06:27:07.452: E/AndroidRuntime(7233): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.view.ViewGroup.addViewInner(ViewGroup.java:3339)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.view.ViewGroup.addView(ViewGroup.java:3210)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.widget.TableLayout.addView(TableLayout.java:429)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.view.ViewGroup.addView(ViewGroup.java:3155)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.widget.TableLayout.addView(TableLayout.java:411)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.view.ViewGroup.addView(ViewGroup.java:3131)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.widget.TableLayout.addView(TableLayout.java:402)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at com.example.nutritionplusapp.SubProducts$LongRunningGetIO1.onPostExecute(SubProducts.java:227)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at com.example.nutritionplusapp.SubProducts$LongRunningGetIO1.onPostExecute(SubProducts.java:1)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.os.AsyncTask.finish(AsyncTask.java:631)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.os.AsyncTask.access$600(AsyncTask.java:177)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.os.Looper.loop(Looper.java:137)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at android.app.ActivityThread.main(ActivityThread.java:5041)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at java.lang.reflect.Method.invokeNative(Native Method)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at java.lang.reflect.Method.invoke(Method.java:511)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-16 06:27:07.452: E/AndroidRuntime(7233):     at dalvik.system.NativeStart.main(Native Method)
03-16 06:32:07.586: I/Process(7233): Sending signal. PID: 7233 SIG: 9
03-16 06:32:08.522: E/Trace(7355): error opening trace file: No such file or directory (2)

两个循环的循环变量值应该相同以便获得相应产品的子产品。我正在与上述错误作斗争。任何有想法的人。请给我建议适当的解决方案。在此先感谢。

编辑:

ArrayList<String> productname=new ArrayList<String>();
ArrayList<String> description=new ArrayList<String>();
ArrayList<String> indextitle=new ArrayList<String>();
 ArrayList<String> mStrings = new ArrayList<String>();

在doINBackground下:

 JSONObject json = array.getJSONObject(i);

     manJson = json.getJSONObject("product");
     mStrings.add(manJson.getString("productimage"));
     productname.add(manJson.getString("productname"));
    indextitle.add(manJson.getString("subcategoryid"));
    description.add(manJson.getString("description"));

最佳答案

好的，第二个潜在问题也是: indextl.addView(indextr);

indextr 在每次循环迭代时都会添加，但它是相同的 View 。您只能向层次结构添加一次 View 。您可能需要为每个循环迭代创建一个新实例。我不能肯定地说，但这可能是问题所在。

关于android - 问题 : The specified child already has a parent. 您必须先在 child 的 parent 上调用 removeView()，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15446182/