Yeah, I got it from AsyncTask usage, so the onLayout() should work, right. btw, I attach some screenshots on Stack Overflow site, so you can see the problem clearly: http://stackoverflow.com/questions/8613465/android-onlayout-and-asynctask-does-not-work-together
Binh Nguyen On Dec 27, 5:35 am, Romain Guy <romain...@android.com> wrote: > onPostExecute() is called on the UI thread. > > On Mon, Dec 26, 2011 at 1:20 AM, Binh Nguyen > > > > > > > > > > <nguyenthanhbinh1...@gmail.com> wrote: > > Hi experts, > > > I need a scrollable table with fixed header, so I followed this great > > blog (http://blog.stylingandroid.com/archives/432) and everything is > > fine. > > > The idea is using one table for header, one table for content added in > > scrollview, both of them are in a customized LinearLayout. In > > customized LinearLayout, we will overwrite the onLayout() to get the > > max width of each row and set width for each row of both header and > > content table. > > > Here is the activity and its layout: > > > package com.stylingandroid.ScrollingTable; > > > import android.content.Context; > > import android.util.AttributeSet; > > import android.view.View; > > import android.widget.LinearLayout; > > import android.widget.TableLayout; > > import android.widget.TableRow; > > > public class ScrollingTable extends LinearLayout > > { > > public ScrollingTable( Context context ) > > { > > super( context ); > > } > > public ScrollingTable( Context context, AttributeSet attrs ) > > { > > super( context, attrs ); > > } > > > @Override > > protected void onLayout( boolean changed, int l, int t, int r, int b ) > > { > > super.onLayout( changed, l, t, r, b ); > > > TableLayout header = (TableLayout) > > findViewById( R.id.HeaderTable ); > > TableLayout body = (TableLayout) findViewById( R.id.BodyTable ); > > > if (body.getChildCount() > 0 ) { > > TableRow bodyRow = (TableRow) body.getChildAt(0); > > TableRow headerRow = (TableRow) header.getChildAt(0); > > > for ( int cellnum = 0; cellnum < bodyRow.getChildCount(); > > cellnum++ ){ > > View bodyCell = bodyRow.getChildAt(cellnum); > > View headerCell = headerRow.getChildAt(cellnum); > > int bodyWidth = bodyCell.getWidth(); > > int headerWidth = headerCell.getWidth(); > > int max = Math.max(bodyWidth, headerWidth); > > TableRow.LayoutParams bodyParams = > > (TableRow.LayoutParams)bodyCell.getLayoutParams(); > > bodyParams.width = max; > > TableRow.LayoutParams headerParams = > > (TableRow.LayoutParams)headerCell.getLayoutParams(); > > headerParams.width = max; > > } > > } > > } > > } > > > main.xml > > ======= > > > <?xml version="1.0" encoding="utf-8"?> > > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ > > android" > > android:orientation="vertical" > > android:layout_width="fill_parent" > > android:layout_height="fill_parent"> > > > <com.stylingandroid.ScrollingTable.ScrollingTable > > android:layout_width="match_parent" > > android:orientation="vertical" > > android:layout_height="match_parent"> > > > <TableLayout > > android:layout_height="wrap_content" > > android:layout_width="match_parent" > > android:id="@+id/HeaderTable"> > > </TableLayout> > > > <ScrollView > > android:layout_width="match_parent" > > android:layout_height="wrap_content"> > > > <TableLayout > > android:layout_height="wrap_content" > > android:layout_width="match_parent" > > android:id="@+id/BodyTable"> > > </TableLayout> > > > </ScrollView> > > > </com.stylingandroid.ScrollingTable.ScrollingTable> > > > </LinearLayout> > > > Main activity > > ========== > > > package com.stylingandroid.ScrollingTable; > > > import android.app.Activity; > > import android.app.ProgressDialog; > > import android.graphics.Color; > > import android.os.AsyncTask; > > import android.os.Bundle; > > import android.widget.TableLayout; > > import android.widget.TableRow; > > > import android.widget.TextView; > > > public class ScrollingTableActivity extends Activity > > { > > private String[][] tableData = { > > {"header11111111111", "header2","header3","header4"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > > {"column1", "column1", > > > "column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"}, > > {"column1", "column1","column1","column1"} > > }; > > /** Called when the activity is first created. */ > > @Override > > public void onCreate( Bundle savedInstanceState ) > > { > > super.onCreate( savedInstanceState ); > > setContentView( R.layout.main ); > > TableLayout tableHeader = > > (TableLayout)findViewById(R.id.HeaderTable); > > TableLayout tableBody = > > (TableLayout)findViewById(R.id.BodyTable); > > > appendRows(tableHeader, tableBody, tableData); > > } > > > private void appendRows(TableLayout tableHeader ,TableLayout > > tableContent, String[][] amortization) { > > int rowSize=amortization.length; > > int colSize=(amortization.length > 0)?amortization[0].length:0; > > for(int i=0; i<rowSize; i++) { > > TableRow row1 = new TableRow(this); > > > for(int j=0; j<colSize; j++) { > > TextView c = new TextView(this); > > c.setText(amortization[i][j]); > > c.setPadding(3, 3, 3, 3); > > if (i == 0) { > > c.setTextColor(Color.BLACK); > > } > > row1.addView(c); > > } > > > if (i == 0) { > > row1.setBackgroundColor(Color.LTGRAY); > > tableHeader.addView(row1, new TableLayout.LayoutParams()); > > } else { > > tableContent.addView(row1, new > > TableLayout.LayoutParams()); > > } > > } > > } > > > The above code work perfectly, however, when I use AnysnTask to get > > data from server and add data to table later, the onLayout() in my > > custom view doesn't work anymore. I simulate getting data by log out > > some number: > > > public void onCreate( Bundle savedInstanceState ) > > { > > super.onCreate( savedInstanceState ); > > setContentView( R.layout.main ); > > > new MyTask().execute(); > > } > > > private class MyTask extends AsyncTask<Void, Void, Void> { > > > private ProgressDialog progressDialog; > > protected void onPreExecute() { > > progressDialog = > > ProgressDialog.show(ScrollingTableActivity.this, > > "", "Loading. Please wait...", > > true); > > } > > @Override > > protected Void doInBackground(Void... reportTypes) { > > for (int i = 0; i < 500; i++) { > > System.out.println(i); > > } > > return null; > > } > > @Override > > protected void onPostExecute(Void result) { > > progressDialog.dismiss(); > > TableLayout tableHeader = > > (TableLayout)findViewById(R.id.HeaderTable); > > TableLayout tableBody = > > (TableLayout)findViewById(R.id.BodyTable); > > > appendRows(tableHeader, tableBody, tableData); > > } > > > } > > > So the onLayout() only work when I call appendRows() from main UI > > thread by putting it in onCreate() method. If I call from another > > thread (in onPostExecute() of AsyncTask), the onLayout() is called (I > > checked it by create some logs) but it doesn't effect to the GUI. I > > tried with invalidate(), forceLayout(), requestLayout() but doesn't > > change anything. > > > I think we need to call a method to make the GUI refresh but don't > > know what it is, I have searched and tried a lot of ways in 2 days but > > got nothing, so it will be very appreciated if you can give any idea > > about this. > > > Many thanks, > > Binh Nguyen > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to android-developers@googlegroups.com > > To unsubscribe from this group, send email to > > android-developers+unsubscr...@googlegroups.com > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > -- > Romain Guy > Android framework engineer > romain...@android.com -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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