使用动态数组名称填充 android spinner

发布于 2024-11-27 23:59:59 字数 549 浏览 0 评论 0原文

我想做这样的事情，请帮助我，

    Spinner spinner = (Spinner) findViewById(R.id.spinner5
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            this,**R.array.country_array**, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter5);

我需要使 R.array.country_array 成为动态的，例如将country_code更改为另一个数组名称，如city_array或stat_array。

我试图写“R.array.”+dynamic_variable_array_name

但我失败了..任何帮助

原文

i want to do something like this,Plz help me

    Spinner spinner = (Spinner) findViewById(R.id.spinner5
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            this,**R.array.country_array**, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter5);

i need to make R.array.country_array to be dynamic for example to change country_code to another array name like city_array or like stat_array.

i tried to write "R.array."+dynamic_variable_array_name

but i failed..any help

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薄荷梦 2024-12-04 23:59:59

为什么不在将数组引用到 ArrayAdapter 之前初始化数组？

Array myArray = getMyArray();

ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            this, myArray, android.R.layout.simple_spinner_item);

[更新]
好的，我刚刚注意到 ArrayAdapter.createFromResource 不适用于非资源。但这会起作用：

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, myArray);

Why don't you initialize your array before you refer it to the ArrayAdapter?

Array myArray = getMyArray();

ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            this, myArray, android.R.layout.simple_spinner_item);

[Update]
Ok, i've just noticed ArrayAdapter.createFromResource doesn't work with non-resources. But this will work:

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, myArray);

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九局 2024-12-04 23:59:59

试试这个

Spinner countrySpinner = (Spinner) findViewById(R.id.search_country);
CharSequence[] myArray = new CharSequence[]{
                "Qatar","UAE","India","America"
        };
ArrayAdapter<CharSequence> countryAdapter = new ArrayAdapter<>(getApplicationContext(), android.R.layout.simple_spinner_item,myArray);
        countryAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
countrySpinner.setAdapter(countryAdapter);

Try This

Spinner countrySpinner = (Spinner) findViewById(R.id.search_country);
CharSequence[] myArray = new CharSequence[]{
                "Qatar","UAE","India","America"
        };
ArrayAdapter<CharSequence> countryAdapter = new ArrayAdapter<>(getApplicationContext(), android.R.layout.simple_spinner_item,myArray);
        countryAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
countrySpinner.setAdapter(countryAdapter);

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