Question

所以我有一个编程按钮，按下时添加了edittext，spinner和一个删除按钮，我想要做的是当我点击删除按钮时删除edittext，微调器和按钮。我的代码不起作用，我看不到日志返回。有人可以告诉我应该在我的代码上点击On Click事件吗？

public LinearLayout createFields(final int id){
    LinearLayout llLayout = new LinearLayout(Customer.this);
    llLayout.setOrientation(LinearLayout.HORIZONTAL);

    TableRow.LayoutParams spinParams = new TableRow.LayoutParams(0, 50, 1f);
    spinParams.setMargins(0, 5, 0, 0);

    TableRow.LayoutParams params = new TableRow.LayoutParams(0, 50, 0.5f);
    params.setMargins(5, 5, 0, 0);

    final Spinner spinner = new Spinner(Customer.this);
    spinner.setLayoutParams(spinParams);
    spinner.setBackgroundResource(R.drawable.roundedittext);
    spinner.setGravity(Gravity.CENTER);

    final EditText etQty = new EditText(Customer.this);     
    etQty.setLayoutParams(params);
    etQty.setBackgroundResource(R.drawable.roundedittext);
    etQty.setHint("Quantity");
    etQty.setGravity(Gravity.CENTER);

    final EditText etPrice = new EditText(Customer.this);       
    etPrice.setLayoutParams(params);
    etPrice.setBackgroundResource(R.drawable.roundedittext);
    etPrice.setHint("Price");
    etPrice.setGravity(Gravity.CENTER);

    final Button btRemove = new Button(Customer.this);      
    btRemove.setLayoutParams(params);
    //btRemove.setBackgroundResource(R.drawable.roundedittext);
    btRemove.setText("Remove");
    btRemove.setGravity(Gravity.CENTER);



    ArrayList<String>itemList = new ArrayList<String>();
    Cursor cursor = db.read("SELECT DISTINCT item_name from item_tb");
    itemList.add("Select Item");
    while(cursor.moveToNext()){
        itemList.add(cursor.getString(cursor.getColumnIndex("item_name")));
    }   

    ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(Customer.this,R.layout.spinner_layout, itemList);
    spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setPrompt("Select Item");
    spinner.setAdapter(spinnerArrayAdapter);



    btRemove.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Log.d("REMOVE CLICK", "Tapped ");
        }
    });

    etQty.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence c, int arg1, int arg2, int arg3) {

            SampleObj obj = new SampleObj();

            String itemz = spinner.getSelectedItem().toString();
            String itemz2 = db.getValue("SELECT itemID from item_tb where item_name = '"+itemz+"'");
            obj.item  = itemz2;
            obj.qty = c.toString();
            obj.price = etPrice.getText().toString();

            list.set(id, obj);

        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {
        }

        @Override
        public void afterTextChanged(Editable arg0) {
        }
    });

    etPrice.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence c, int arg1, int arg2, int arg3) {

            SampleObj obj = new SampleObj();

            String itemz = spinner.getSelectedItem().toString();
            String itemz2 = db.getValue("SELECT itemID from item_tb where item_name = '"+itemz+"'");
            obj.item  = itemz2;
            obj.qty = etQty.getText().toString();
            obj.price = c.toString();

            list.set(id, obj);

        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {
        }

        @Override
        public void afterTextChanged(Editable arg0) {
        }
    });



    spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1, int pos, long arg3) {

            SampleObj obj = new SampleObj();

            String itemz = spinner.getSelectedItem().toString();
            String itemz2 = db.getValue("SELECT itemID from item_tb where item_name = '"+itemz+"'");
            obj.item  = itemz2;
            obj.qty = etQty.getText().toString();
            obj.price = etQty.getText().toString();

            Customer.list.set(id, obj);
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {

        }
        });


    llLayout.addView(spinner);
    llLayout.addView(etQty);
    llLayout.addView(etPrice);
    llLayout.addView(btRemove);     
    return llLayout;

}

Answer 1

只需在代码中全局定义Edittext，微调器和按钮，然后点击按钮点击您设置的设置。

所以这样做。

在代码中全局定义。

Spinner spinner = new Spinner(Customer.this);
EditText etQty = new EditText(Customer.this);     
EditText etPrice = new EditText(Customer.this);

然后在onclick of remove试试这个。

btRemove.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {

            System.out.println("Inside Remove button's click event");

            spinner.setVisibility(View.gone);
            etPriceset.Visibility(View.gone);
            etQty.Visibility(View.gone); 
        }
    });

Answer 2

我想你错过@Override onClick事件。所以添加这个可能会得到结果。

试试这个

 btRemove.setOnClickListener(new View.OnClickListener() {
  @Override
    public void onClick(View v) {
        Log.d("REMOVE CLICK", "Tapped ");
    }
});

删除按钮不能以编程方式运行android

2 个答案: