每20秒更改Listview颜色

时间:2012-09-14 16:01:44

标签: android android-listview background-color

enter image description here

是否可以每隔10或15秒更改列表视图颜色或背景颜色。我已使用此列表视图的现有代码。在mycode中添加必要步骤的位置。我不想在每次选择项目时为用户更改颜色。如果用户简单地打开我的应用程序,并且在backgroundcolor上的10秒自动更改。

mycode的:

public class MainActivity extends Activity {
    private ListView lv;
    private EditText et;
    private String listview_array[] = { "ONE", "TWO", "THREE", "FOUR", "FIVE",
    "SIX", "SEVEN", "EIGHT", "NINE", "TEN" };
    private ArrayList<String> array_sort= new ArrayList<String>();
    int textlength=0;

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

        lv = (ListView) findViewById(R.id.ListView01);
        et = (EditText) findViewById(R.id.EditText01);
        lv.setAdapter(new ArrayAdapter<String>(this,
        android.R.layout.simple_list_item_1, listview_array));

        et.addTextChangedListener(new TextWatcher()
        {
        public void afterTextChanged(Editable s)
        {
                                                                        // Abstract Method of TextWatcher Interface.
        }
        public void beforeTextChanged(CharSequence s,
        int start, int count, int after)
        {
        // Abstract Method of TextWatcher Interface.
        }
        public void onTextChanged(CharSequence s,
        int start, int before, int count)
        {
        textlength = et.getText().length();
        array_sort.clear();
        for (int i = 0; i < listview_array.length; i++)
        {
        if (textlength <= listview_array[i].length())
        {
        if(et.getText().toString().equalsIgnoreCase(
        (String)
        listview_array[i].subSequence(0,
        textlength)))
        {
                                                                                                                        array_sort.add(listview_array[i]);
                                                                                                        }
                                                                                        }
                                                                        }
        lv.setAdapter(new ArrayAdapter<String>
        (MainActivity.this,
        android.R.layout.simple_list_item_1, array_sort));
        }
        });

    }

1 个答案:

答案 0 :(得分:1)

在您正在充气的文本视图的自定义视图更改颜色的getview()中。 并在每次需要时使用notifydatasetchanged()