根据另一个微调器选择填充微调器

Question

我有一个带有身体部位列表的微调器，例如。胸部，腿部，背部。我还有每个身体部位的字符串数组，以及该身体部位的练习列表，例如。对于胸部，我有一个称为胸部锻炼的弦乐阵列，其中包括卧推、哑铃推举等一系列练习。 因此，例如，如果选择了胸部，我想用胸部运动填充第二个微调器，如果选择了腿部，我想用腿部运动填充第二个微调器。有什么好办法吗？

 String[] chestExercises = {"Flat Barbell Bench Press", "Incline Barbell Bench Press",
            "Decline Barbell Bench Press", "Flat Dumbbell Press", "incline Dumbbell Press", "Decline Dumbbell Press",
            "Cable Flys", "Dumbbell Flys",};


    public void addListenerOnSpinnerItemSelection() {
    spinner1 = (Spinner) findViewById(R.id.spinner1);
    spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());


   }


    public void addListenerOnButton() {

    spinner1 = (Spinner) findViewById(R.id.spinner1);
    spinner2 = (Spinner) findViewById(R.id.spinner2);
    btnSubmit = (Button) findViewById(R.id.btnSubmit);



    btnSubmit.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            Toast.makeText(record_workout.this,
                    "OnClickListener : " +
              "\nSpinner 1 : " + String.valueOf(spinner1.getSelectedItem())+
               "\nSpinner 2 : String.valueOf(spinner2.getSelectedItem()),
                    Toast.LENGTH_SHORT).show();
        }

    });
}

Answer 1

您需要做的就是检查 spinner1 的输入，并在此基础上，根据用户输入匹配某个 arraylist 来设置与 spinner2 对应的数组适配器：

我编写这段代码是为了让你有一个更好的想法，并在其中添加了一些 cmets，所以也请检查一下。

public void addListenerOnSpinnerItemSelection() {
    ArrayList<MyObject> Chest = new ArrayList<MyObject>(); // This is actually the list created from the HashMap
    ArrayList<MyObject> Knee = new ArrayList<MyObject>(); // This is actually the list created from the HashMap
    ArrayList<MyObject> Head = new ArrayList<MyObject>(); // This is actually the list created from the HashMap

    spinner1 = (Spinner) findViewById(R.id.spinner1);
    spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());
}


public void addListenerOnButton() {
    spinner1 = (Spinner) findViewById(R.id.spinner1);
    spinner2 = (Spinner) findViewById(R.id.spinner2);
    btnSubmit = (Button) findViewById(R.id.btnSubmit);

    btnSubmit.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(record_workout.this,
                          "OnClickListener : " +
                          "\nSpinner 1 : " + String.valueOf(spinner1.getSelectedItem())+
                          "\nSpinner 2 : " + String.valueOf(spinner2.getSelectedItem()),
                           Toast.LENGTH_SHORT).show();

            ArrayAdapter<MyObject> adapter = null;

            if(spinner1.getSelectedItem().equals("Chest"){
                adapter = new ArrayAdapter<ObjectName>(this, android.R.layout.simple_spinner_item, Chest);
            } else if (spinner1.getSelectedItem().equals("Knee"){ //INPUT = KNEE SO SET ADAPTER TO KNEE ARRAY LIST
                adapter = new ArrayAdapter<ObjectName>(this, android.R.layout.simple_spinner_item, Knee);
            } else if (spinner1.getSelectedItem().equals("Head"){
                adapter = new ArrayAdapter<ObjectName>(this, android.R.layout.simple_spinner_item, head);
            }

            if (adapter != null) {
                spinner2.setAdapter(adapter);
                adapter.notifyDataSetChanged();
            }
        });
    }
}

我在这里所做的是检查了微调器侦听器中第一个微调器中的输入。然后，我检查它是否匹配“头部”、“胸部”或“膝盖”，如果匹配，我将 Spinner 2 的 ArrayAdapter 设置为对应的 ArrayList。

如果这有帮助，请告诉我。