Question

我正在尝试填充一个微调器，但是我的String数组中出现错误，说“数组常量只能在初始化器中使用”。当我使用字符串数组作为局部变量时，我的代码工作正常，但作为全局变量，它没有。我真的需要能够将我的字符串数组用作全局变量。先感谢您。这是我的代码：

 deleteselection = (Spinner)view.findViewById(R.id.deletespinner);
    ArrayAdapter<String> adapterdeletetype;
    //createdenominationsarray = getResources().getStringArray(R.array.createdenominations); //<--works
    //String [] createdenominationsarray = {"Select Portfolio", "Two", "Three"}; //<--works
    createdenominationsarray = {"Select Portfolio", "Two", "Three"};// <--doesn'twork
    adapterdeletetype = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item,createdenominationsarray){
            @Override
            public View getDropDownView(int position, View convertView, ViewGroup parent)
            {
                View v = null;

                // If this is the initial dummy entry, make it hidden
                if (position == 0) {
                    TextView tv = new TextView(getContext());
                    tv.setHeight(0);
                    tv.setVisibility(View.GONE);
                    v = tv;
                }
                else {
                    // Pass convertView as null to prevent reuse of special case views
                    v = super.getDropDownView(position, null, parent);
                }

                // Hide scroll bar because it appears sometimes unnecessarily, this does not prevent scrolling 
                parent.setVerticalScrollBarEnabled(false);
                return v;
            }
        };      
    adapterdeletetype.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    denominationselection.setAdapter(adapterdeletetype);

Answer 1

我为我的一个项目做了同样的事情，它对我有用。以下是供您参考的代码段。

ArrayList<String> languages = new ArrayList<String>();
languages.add("English");
languages.add("German");
languages.add("French");
ArrayAdapter<String> langAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,languages);
ListView lv =(ListView)findViewById(R.id.listmain);
lv.setAdapter(langAdapter);
lv.setOnItemClickListener(new listclklisten(MainActivity.this));



public class listclklisten implements OnItemClickListener{
        private Context parent;
        public listclklisten(Context p){
            parent=p;
        }
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
            // TO DO your code here

        }
    }

Answer 2

在string.xml内写：

   <string-array name="spinner_array_environtment">
        <item>Test</item>
        <item>Production</item>
    </string-array>

在MainActivity.java中：

public class MainActivity extends Activity {
Spinner spinner_environment;

        @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);

                spinner_environment = (Spinner) findViewById(R.id.spinnerview);
adapter =ArrayAdapter.createFromResource(this,              R.array.spinner_array_environtment,R.layout.spinner_phone);
            adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
            spinner_environment.setAdapter(adapter);
}

内部spinner_phone.xml：

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/spinnerTarget"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:textSize="13dp"
    android:textColor="#4C4646" />

试一试。希望它会对你有所帮助。

如何使用全局字符串数组变量填充微调器？

2 个答案: