Question

嗨，我只是想到微调机。我想知道，如果我想将相同的数据粘贴到多个微调器中，我可以用一种方法来做吗？我的意思是将一个适配器连接到许多微调器，或者我必须用其他方法来做？这是简单的例子。假设用户必须从这些微调器中选择三周的时间

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);

或

fillSpinner(secondSpinner);

通过这种方法，您可以使用不限数量的微调器，而无需重复代码。

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) {
        }
    });
}

我可以使用一种方法用相同的数据填充许多微调器吗？

2 个答案: