问题
I have a JSON String returned by my web service as follows:
{"checkrecord"[{"rollno":"abc2","percentage":40,"attended":12,"missed":34}],"Table1":[]}
The above String represents my dataset. I have converted the String to a JSON Object and I now want to put the data in the String into a TableLayout.
I want the table to be like this when displayed on android app:
rollno percentage attended missed
abc2 40 12 34
This is the code I am using as of now :
//json processing code
public void jsonprocessing(String c)
{
try
{
JSONObject jsonobject = new JSONObject(c);
JSONArray array = jsonobject.getJSONArray("checkrecord");
int max = array.length();
for (int j = 0; j < max; j++)
{
JSONObject obj = array.getJSONObject(j);
JSONArray names = obj.names();
for (int k = 0; k < names.length(); k++)
{
name = names.getString(k);
value= obj.getString(name);
createtableLayout();
}
}
}
catch (JSONException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//create table layout
public void createtableLayout()
{
Log.d("values",value); //I am able to see the values abc2,40,12 and 34 over here in logcat
TableLayout t= (TableLayout)findViewById(R.id.tablelayout);
TableRow r1=new TableRow(this);
r1.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
TextView t1 = new TextView(this);
t1.setText(value);
t1.setTextColor(Color.BLACK);
t1.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
r1.addView(t1);
t.addView(r1, new TableLayout.LayoutParams( LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
}
My TableLayout contains a button and a EditText as the first TableRow. After I click the button I get the JSON String. So I need to insert 2 TableRows dynamically after that as per my requirement.
My xml as of now is as follows:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tablelayout"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:background="#000044">
<TableRow>
<EditText
android:id="@+id/edittext"
android:width="200px" />
<Button
android:id="@+id/button"
android:text="Check Record"/>
</TableRow>
</TableLayout>
So my problem is how to add those 2 extra TableRows so as to populate them with the String values ?
My code isn't working fine. I am not able to get the required output.
Can anyone help me in this?
Thanks
回答1:
you can use multicolumn listview for your purpose,
Parse the JSON response and get values into different strings and use this blog for your purpose
Multicolumn Listview
回答2:
You, probably, can define those 2 more rows in your XML and make them initially invisible. Then upon receiving your data put your data in those rows and make them visible.
回答3:
// Every UI object must have a layout parameter
int widthContent = RelativeLayout.LayoutParams.WRAP_CONTENT;
int heightContent = RelativeLayout.LayoutParams.WRAP_CONTENT;
// Create relative layout
RelativeLayout.LayoutParams rlParamsName = new RelativeLayout.LayoutParams(widthContent,heightContent);
// Create table row layout
int trWidthContent = TableRow.LayoutParams.WRAP_CONTENT;
int trHeightContent = TableRow.LayoutParams.WRAP_CONTENT;
TableRow.LayoutParams trLayout = new TableRow.LayoutParams(trWidthContent, trHeightContent);
// Create a linear layout to add new object as vertical
LinearLayout objLinearLayout = new LinearLayout(context);
objLinearLayout.setOrientation(LinearLayout.VERTICAL);
// Add number of categories to menu
for (int i = 0; i < SpecialCategories.length(); i++) {
try {
// Json for special categories
JSONObject jsonData = SpecialCategories.getJSONObject(i);
// Get name and count of category
String specialCategoryNames = jsonData.getString("label").toString();
String specialCategoryCount = jsonData.getString("coupon_count").toString();
final TableRow tr = new TableRow(this);
tr.setLayoutParams(trLayout);
tr.setId(i);
//tr.setBackgroundColor(0xFFBEBEBE);
// What is the text view for category name
TextView categoryName = new TextView(this);
categoryName.setPadding(8, 8, 8, 8);
categoryName.setTextSize(18);
categoryName.setLayoutParams(trLayout);
categoryName.setText(specialCategoryNames);
categoryName.setId(i);
categoryName.setTypeface(null, Typeface.BOLD);
categoryName.setTextColor(0xFF000000);
// What is count for category
TextView categoryCount = new TextView(this);
categoryCount.setPadding(7, 8, 8, 8);
categoryCount.setLayoutParams(trLayout);
categoryCount.setBackgroundColor(Color.WHITE);
categoryCount.setText("("+specialCategoryCount+")");
// Add disclosure image to row
ImageView objDrawLineImageView = new ImageView(this);
objDrawLineImageView.setPadding(280, 19, 6, 6);
objDrawLineImageView.setImageResource(R.drawable.disclosure);
objDrawLineImageView.setLayoutParams(trLayout);
// Add name of category
tr.addView(categoryName);
// Add count for category
tr.addView(categoryCount);
// Add disclosure back to table row
tr.addView(objDrawLineImageView);
// Add table row into linear layout
objLinearLayout.addView(tr);
//Add Row End Line to Linear layout
ImageView rowEndLine = new ImageView(context);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,2);
params.setMargins(0, 5, 0, 0);
rowEndLine.setLayoutParams(params);
rowEndLine.setBackgroundColor(0xFFBEBEBE);
// Add end line image to linear layout
objLinearLayout.addView(rowEndLine);
// What happen when user click on table row
tr.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Toast.makeText(Main.this, ""+tr.getId(),Toast.LENGTH_SHORT).show();
Log.e("TAG", " clicked ID: "+tr.getId());
}
});
} catch (Exception e) {
e.printStackTrace();
}// end try
}// end for SpecialCategories.length()
//Add button number two to the activity.
RelativeLayout objRelativeLayout = (RelativeLayout)findViewById(R.id.row_special);
objRelativeLayout.addView(objLinearLayout);
来源：https://stackoverflow.com/questions/8366911/populating-table-layout-using-json-string