java - 如何将(代码生成的)TableRow 的内容与字符串进行比较？

Question

所以我一直在尝试这样做，它基本上表明我试图获取的“内容”为空。这是我正在测试的代码(注释部分是我试图让它工作的实际代码，我刚刚添加了 println 以查看获取的数据是否正确，但事实并非如此)

public void FiltarBusqueda(String filtro) {
    int count=0;
    for (int r = 0; r < mTableLayout.getChildCount(); r++) {
        TableRow trow = (TableRow) mTableLayout.getChildAt(r);
        for(int c=0;c <= trow.getChildCount();c++){
            System.out.println(""+trow.getChildAt(c));
            /*if (trow.getChildAt(c).toString() != filtro) {
                count++; }
            if(count==3){
                mTableLayout.removeView(trow); }*/
            }
    }
}

public void onClickFiltro(View v){
    EditText filtro = (EditText)findViewById(R.id.txtproducto);
    FiltarBusqueda(filtro.getText().toString());
}

*为每个创建表行的东西也属于同一个类*LinearLayout 的东西:

final LinearLayout layCustomer = new LinearLayout(this);
            layCustomer.setOrientation(LinearLayout.VERTICAL);
            layCustomer.setPadding(0, 10, 0, 10);
            layCustomer.setBackgroundColor(Color.parseColor("#f8f8f8"));

            final TextView tv3 = new TextView(this);
            if (i == -1) {
                tv3.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
                        TableRow.LayoutParams.MATCH_PARENT));
                tv3.setPadding(5, 5, 0, 5);
                tv3.setTextSize(TypedValue.COMPLEX_UNIT_PX, smallTextSize);
            } else {
                tv3.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
                        TableRow.LayoutParams.MATCH_PARENT));
                tv3.setPadding(5, 0, 0, 5);
                tv3.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
            }

            tv3.setGravity(Gravity.TOP);


            if (i == -1) {
                tv3.setText("Productos");
                tv3.setBackgroundColor(Color.parseColor("#f0f0f0"));
            } else {
                tv3.setBackgroundColor(Color.parseColor("#f8f8f8"));
                tv3.setTextColor(Color.parseColor("#000000"));
                tv3.setTextSize(TypedValue.COMPLEX_UNIT_PX, smallTextSize);
                tv3.setText(row.productName);
            }
            layCustomer.addView(tv3);

Answer 1

TextView#toString() 无法获取该 TextView 内的文本。它只是打印类名和实例哈希码。您需要使用TextView#getText()#toString()。

使用这个:

public void FiltarBusqueda(String filtro) {
    for (int r = 0; r < mTableLayout.getChildCount(); r++) {
        TableRow trow = (TableRow) mTableLayout.getChildAt(r);

        boolean hasMatch = false;

        for (int c = 0; c <= trow.getChildCount(); c++) {
            String text = ((TextView) trow.getChildAt(c)).getText().toString();

            hasMatch = text.equals(filtro); //when comparing Strings, use `equals()` not `==`
            if (hasMatch) break;
        }

        if (!hasMatch) {
            mTableLayout.removeRow(trow);
        }
    }
}