Question

我有一个动态加载视图的问题。我有三个动态微调器视图，当我从微调器中选择第一个项目时，它应该在第二个微调器上方创建一个文本视图，但它在第三个微调器下创建一个视图。任何人都可以指导我如何实现它。我已经在下面分享了我的代码。

/add LayoutParams
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        rl.setOrientation(LinearLayout.VERTICAL);


        // add spinner

        String[] spinnerArray = {"Android","ios","other"};
        Spinner spinner = new Spinner(this);
        ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, spinnerArray); //selected item will look like a spinner set from XML
        spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(spinnerArrayAdapter);


        String[] spinnerArray1 = {"flowers","vegetables","other"};
        Spinner spinner1 = new Spinner(this);
        ArrayAdapter<String> spinnerArrayAdapter1 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, spinnerArray1); //selected item will look like a spinner set from XML
        spinnerArrayAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner1.setAdapter(spinnerArrayAdapter1);



        String[] spinnerArray2 = {"cat","dog","other"};
        Spinner spinner2 = new Spinner(this);
        ArrayAdapter<String> spinnerArrayAdapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, spinnerArray2); //selected item will look like a spinner set from XML
        spinnerArrayAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner2.setAdapter(spinnerArrayAdapter2);


        rl.addView(spinner);
        rl.addView(spinner1);
        rl.addView(spinner2);

        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
            {
             if(position==1)
             {
                 TextView tv = new TextView(MainActivity.this);
                 tv.setText("Hello");
                 rl.addView(tv);
             }
            }

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

            }
        });

Answer 1

你知道LinearLayout的工作原理吗？ http://developer.android.com/reference/android/widget/LinearLayout.html 你应该打电话给

addView(tv, 1);

指定插入视图的位置。

使用微调器创建动态视图在Android中可靠

1 个答案: