Question

我使用此代码更改颜色，但只有当我退出应用程序并再次运行时，颜色才会更改。如何决定立即更改颜色？

adapter2 = new ArrayAdapter<String>(getApplicationContext(),
            android.R.layout.simple_list_item_1, list) {
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view = super.getView(position, convertView, parent);
            TextView text = (TextView) view
                    .findViewById(android.R.id.text1);
            text.setTextColor(Color.parseColor(color));
            return view;
        }
    };

Answer 1

创建res/color/button_text.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
      android:color="#ffff0000"/> <!-- pressed -->
<item android:state_focused="true"
      android:color="#ff0000ff"/> <!-- focused -->
<item android:color="#ff000000"/> <!-- default -->
</selector>

此布局XML会将颜色列表应用于View：

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="TextView"
android:textColor="@color/button_text" />

如果您想动态应用State Color，那么

ColorStateList myColorStateList = new ColorStateList(
                    new int[][]{
                            new int[]{android.R.attr.state_pressed}, //1
                            new int[]{-android.R.attr.state_focused}, //2
                            new int[]{android.R.attr.state_selected, android.R.attr.state_pressed} //3
                    },
                    new int[] {
                        Color.RED, //1
                        Color.WHITE, //2
                        Color.BLUE //3
                    }
                );
            title_txt.setTextColor(myColorStateList);

有关详情，请访问：http://developer.android.com/guide/topics/resources/color-list-resource.html

Answer 2

将此文件放在res / color文件夹中textselector_list.xml

<?xml version="1.0" encoding="utf-8"?>

<item android:state_pressed="true" android:color="#FFFFFFFF"/>
<!-- pressed -->
<item android:state_focused="true" android:color="#FFFFFFFF"/>
<!-- focused -->
<item android:state_selected="true" android:color="#FFFFFFFF"/>
<!-- selected -->
<item android:color="#FF888888"/>
<!-- default -->

并将其设置为android:textColor="@color/textselector_list" listView项，即TextView或Button。

Android系统。如何在点击时更改ListView文本颜色？

2 个答案: