Question

我想做两件事： - 1）用Recycler View替换我的动态TableLayout。 2）计算所选项目的总和（总计）。

这是我目前的代码。

<article>

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我有两个编辑文本字段，一个用于速率，一个用于制作费用。在我当前的应用程序中，我能够计算文本更改中每个项目的总数。为了实现这一点，我使用了Text Watcher，如下所示 -

private void showItem(String json) {
String itembarcode = "";
String itemdesc = "";
String weight = "";
String rate = "";
String making = "";
String netrate = "";
String total = "";


try {
    JSONObject jsonObject = new JSONObject(json);
    JSONArray result = jsonObject.getJSONArray(ParseBarcode.JSON_ARRAY);
    JSONObject itemData = result.getJSONObject(0);
    itembarcode = itemData.getString(ParseBarcode.KEY_BARCODE);
    itemdesc = itemData.getString(ParseBarcode.KEY_DESC);
    weight = itemData.getString(ParseBarcode.KEY_WEIGHT);
    rate = itemData.getString(ParseBarcode.KEY_RATE);
    making = itemData.getString(ParseBarcode.KEY_MAKING);
    netrate = itemData.getString(ParseBarcode.KEY_NETRATE);
    total = itemData.getString(ParseBarcode.KEY_TOTAL);
} catch (JSONException e) {
    e.printStackTrace();
}


//table started

TableLayout.LayoutParams tableParams = new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT, TableLayout.LayoutParams.WRAP_CONTENT);
TableRow.LayoutParams rowParams = new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 1f);
rowParams.setMargins(16, 0, 16, 0);

TableLayout tableLayout = new TableLayout(AddInvEst.this);
tableLayout.setLayoutParams(tableParams);

TableRow newRow = new TableRow(AddInvEst.this);
newRow.setLayoutParams(tableParams);

barCode = new TextView(AddInvEst.this);
barCode.setLayoutParams(rowParams);
barCode.setGravity(Gravity.CENTER);

itemDesc = new TextView(AddInvEst.this);
itemDesc.setLayoutParams(rowParams);
itemDesc.setGravity(Gravity.CENTER);

weightLine = new TextView(AddInvEst.this);
weightLine.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 0.75f));
weightLine.setGravity(Gravity.CENTER);

rateAmount = new EditText(AddInvEst.this);
rateAmount.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 0.5f));
rateAmount.setGravity(Gravity.CENTER);
rateAmount.addTextChangedListener(rateTextWatcher);

makingAmount = new EditText(AddInvEst.this);
makingAmount.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 0.5f));
makingAmount.setGravity(Gravity.CENTER);
makingAmount.addTextChangedListener(mkAmountTextWatcher);

netRate = new TextView(AddInvEst.this);
netRate.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 0.5f));
netRate.setGravity(Gravity.CENTER);
netrates.add(netrate);

itemtotal = new TextView(AddInvEst.this);
itemtotal.setLayoutParams(rowParams);
itemtotal.setGravity(Gravity.CENTER);
totals.add(total);

double[] doubleList = new double[totals.size()];
double sum = 0;
for (int i = 0; i < totals.size(); ++i) {
    doubleList[i] = Double.parseDouble(totals.get(i));
    sum += doubleList[i];
}

barCode.setText(itembarcode);
itemDesc.setText(itemdesc);
weightLine.setText(weight);
rateAmount.setText(rate);
makingAmount.setText(making);
netRate.setText(netrate);
itemtotal.setText(total);
textViewSum.setText(sum * (0.02) + sum + "");//set total text to sum
textViewVat.setText(sum * (0.02) + "");

newRow.addView(barCode);
newRow.addView(itemDesc);
newRow.addView(weightLine);
newRow.addView(rateAmount);
newRow.addView(makingAmount);
newRow.addView(netRate);
newRow.addView(itemtotal);
itemTable.addView(newRow);

如何在RecyclerView中为行布局充气？

0 个答案: