我可以使用一种方法用相同的数据填充许多微调器吗？

Question

嗨，我只想到纺纱厂。我想知道，如果我想将相同的数据传递给多个微调器，我可以用一种方法吗？我的意思是将一个适配器连接到许多微调器，或者我必须在其他方法中进行？这是一个简单的例子。假设用户必须从这些微调器中选择三个星期的工作日

public void first() {
    List<String> data = db.getBodyParts();
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    firstSpinner.setAdapter(adapter);


    firstSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {
        }
    });
}

public void second() {
    List<String> data = db.getBodyParts();
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    secondSpinner.setAdapter(adapter);


    secondSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {
        }
    });
}

Answer 1

您不需要重复的代码，只需将微调器作为参数发送到您的方法中，如下所示：

public void fillSpinner(Spinner spinner) {
    List<String> data = db.getBodyParts();
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter);


    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {
        }
    });
}

用法是这样的：

fillSpinner(firstSpinner);

要么

fillSpinner(secondSpinner);

使用此方法，您可以使用无限数量的微调器而无需重复的代码。

Answer 2

尝试：

public void first() {
    List<String> data = db.getBodyParts();
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    firstSpinner.setAdapter(adapter);


    firstSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {
        }
    });

    secondSpinner.setAdapter(adapter);


    secondSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {
        }
    });
}