我有一个TableLayout并用WebService填充它并且它的工作正常，但是当我想第二次执行WebService时，数据显示在上面的下面，我必须在显示新信息之前清理，怎么能那样做？
代码onTaskComplete和showTablaPos（填充TableLayOut）
// Called after task finished
@Override
public void onTaskComplete(JSONObject result) {
// TODO Auto-generated method stub
try{
ljsonObject = result;
//Se obtienen los valores de status y mensaje
int status = ljsonObject.getInt("status");
String mensaje = ljsonObject.getString("mensaje");
mensaje = mensaje.concat(", favor de llamar a la oficina de tú cancha para reportar este mensaje, gracias");
//status = 0 para el Web Service de Obtener catálogo de Torneos, status = 1 para obtener la tabla de posiciones
try {
ljsonArray = ljsonObject.getJSONArray(tag);
//Arma y carga la tabla de Posiciones
showTablaPos();
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
}catch (Exception e) {
e.printStackTrace();
}
}
public void showTablaPos(){
TableLayout tablaPos = (TableLayout) findViewById(R.id.tabla_pos);
//Create table row header
TableRow tr_head = new TableRow(this);
tr_head.setId(10);
tr_head.setBackgroundColor(Color.GRAY);
//tr_head.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
//Se crean los header
TextView label_equipo = new TextView(this);
label_equipo.setId(20);
label_equipo.setText("EQUIPO");
label_equipo.setTextColor(Color.WHITE);
label_equipo.setPadding(5, 5, 5, 5);
tr_head.addView(label_equipo);
TextView label_jj = new TextView(this);
label_jj.setId(20);
label_jj.setText("JJ");
label_jj.setTextColor(Color.WHITE);
label_jj.setPadding(5, 5, 5, 5);
tr_head.addView(label_jj);
TextView label_jg = new TextView(this);
label_jg.setId(20);
label_jg.setText("JG");
label_jg.setTextColor(Color.WHITE);
label_jg.setPadding(5, 5, 5, 5);
tr_head.addView(label_jg);
TextView label_je = new TextView(this);
label_je.setId(20);
label_je.setText("JE");
label_je.setTextColor(Color.WHITE);
label_je.setPadding(5, 5, 5, 5);
tr_head.addView(label_je);
TextView label_jp = new TextView(this);
label_jp.setId(20);
label_jp.setText("JP");
label_jp.setTextColor(Color.WHITE);
label_jp.setPadding(5, 5, 5, 5);
tr_head.addView(label_jp);
TextView label_gf = new TextView(this);
label_gf.setId(20);
label_gf.setText("GF");
label_gf.setTextColor(Color.WHITE);
label_gf.setPadding(5, 5, 5, 5);
tr_head.addView(label_gf);
TextView label_ge = new TextView(this);
label_ge.setId(20);
label_ge.setText("GE");
label_ge.setTextColor(Color.WHITE);
label_ge.setPadding(5, 5, 5, 5);
tr_head.addView(label_ge);
TextView label_dif = new TextView(this);
label_dif.setId(20);
label_dif.setText("DIF");
label_dif.setTextColor(Color.WHITE);
label_dif.setPadding(5, 5, 5, 5);
tr_head.addView(label_dif);
TextView label_ptos = new TextView(this);
label_ptos.setId(20);
label_ptos.setText("PTOS.");
label_ptos.setTextColor(Color.WHITE);
label_ptos.setPadding(5, 5, 5, 5);
tr_head.addView(label_ptos);
tablaPos.addView(tr_head, new TableLayout.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
Integer count = 0;
Integer cuantos = ljsonArray.length();
try{
for (int i = 0; i < ljsonArray.length(); i++) {
ljsonObject = ljsonArray.getJSONObject(i);
String equipo = (ljsonObject.optString("equ_nombre"));
Integer jj = (ljsonObject.optInt("jj"));
Integer jg = (ljsonObject.optInt("jg"));
Integer je = (ljsonObject.optInt("je"));
Integer jp = (ljsonObject.optInt("jp"));
Integer gf = (ljsonObject.optInt("gf"));
Integer ge = (ljsonObject.optInt("ge"));
Integer dif = (ljsonObject.optInt("dif"));
Integer pto = (ljsonObject.optInt("puntos"));
TableRow tr = new TableRow(this);
if(count%2!=0) tr.setBackgroundColor(Color.GRAY);
tr.setId(100+count);
//tr.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
//Create columns to add as table data
// Create a TextView to add equipo
TextView labelEquipo = new TextView(this);
labelEquipo.setId(200+count);
labelEquipo.setText(equipo);
labelEquipo.setPadding(2, 0, 5, 0);
labelEquipo.setTextColor(Color.WHITE);
tr.addView(labelEquipo);
TextView labelJj = new TextView(this);
labelJj.setId(200+count);
labelJj.setText(Integer.toString(jj));
labelJj.setPadding(2, 0, 5, 0);
labelJj.setTextColor(Color.WHITE);
labelJj.setGravity(Gravity.CENTER);
tr.addView(labelJj);
TextView labelJg = new TextView(this);
labelJg.setId(200+count);
labelJg.setText(Integer.toString(jg));
labelJg.setPadding(2, 0, 5, 0);
labelJg.setTextColor(Color.WHITE);
labelJg.setGravity(Gravity.CENTER);
tr.addView(labelJg);
TextView labelJe = new TextView(this);
labelJe.setId(200+count);
labelJe.setText(Integer.toString(je));
labelJe.setPadding(2, 0, 5, 0);
labelJe.setTextColor(Color.WHITE);
labelJe.setGravity(Gravity.CENTER);
tr.addView(labelJe);
TextView labelJp = new TextView(this);
labelJp.setId(200+count);
labelJp.setText(Integer.toString(jp));
labelJp.setPadding(2, 0, 5, 0);
labelJp.setTextColor(Color.WHITE);
labelJp.setGravity(Gravity.CENTER);
tr.addView(labelJp);
TextView labelGf = new TextView(this);
labelGf.setId(200+count);
labelGf.setText(Integer.toString(gf));
labelGf.setPadding(2, 0, 5, 0);
labelGf.setTextColor(Color.WHITE);
labelGf.setGravity(Gravity.CENTER);
tr.addView(labelGf);
TextView labelGe = new TextView(this);
labelGe.setId(200+count);
labelGe.setText(Integer.toString(ge));
labelGe.setPadding(2, 0, 5, 0);
labelGe.setTextColor(Color.WHITE);
labelGe.setGravity(Gravity.CENTER);
tr.addView(labelGe);
TextView labelDif = new TextView(this);
labelDif.setId(200+count);
labelDif.setText(Integer.toString(dif));
labelDif.setPadding(2, 0, 5, 0);
labelDif.setTextColor(Color.WHITE);
labelDif.setGravity(Gravity.CENTER);
tr.addView(labelDif);
TextView labelPtos = new TextView(this);
labelPtos.setId(200+count);
labelPtos.setText(Integer.toString(pto));
labelPtos.setPadding(2, 0, 5, 0);
labelPtos.setTextColor(Color.WHITE);
labelPtos.setGravity(Gravity.CENTER);
tr.addView(labelPtos);
// finally add this to the table row
tablaPos.addView(tr, new TableLayout.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
count++;
}
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
}
}
答案 0 :(得分：0)
尝试在填充数据之前调用此函数
private void deleteRows(){
TableLayout tablaPos = (TableLayout) findViewById(R.id.tabla_pos);
tablaPos.removeAllViews();
}
更新：
试试这个
private void deleteRows(){
TableLayout tablaPos = (TableLayout) findViewById(R.id.tabla_pos);
for(int i = 0; i < tablaPos.getChildCount(); i++){
tablaPos.removeViewAt(i);
}
}