Android-具有自定义视图标签的Tablayout-无法应用可绘制选择器 [英] Android - tablayout with custom view tabs - drawable selector cannot be applied
问题描述
我正在尝试在gradle中使用编译'com.android.support:design:25.3.1'在tablayout中设置自定义标签.
I am trying to set up custom tabs in a tablayout using compile 'com.android.support:design:25.3.1' in gradle.
我想使用选择器,以便在单击选项卡时会根据其状态进行更改.
I want to use selectors so that when a tab is clicked it changes based on its state.
所以我尝试了以下失败的事情:
So I've tried the following unsuccessfully :
这是我的活动xml:
<ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/white"/>
<android.support.design.widget.TabLayout
android:id="@+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabGravity="fill"
style="@style/MyCustomTabLayout"
/>
这是我用于tabLayout的样式:
here is the style i use for the tabLayout:
<style name="MyCustomTabLayout" parent="Widget.Design.TabLayout">
<item name="tabIndicatorColor">@android:color/transparent</item>
</style>
隐藏下划线.
这是我的主页标签的选择器之一:
here is one of my selectors for my home tab:
这是我对每个标签的自定义视图:
here is the custom view i have for each tab:
<ImageView
android:id="@+id/iv_imgview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
tools:src="@drawable/home_tab_selector"
/>
<TextView
android:id="@+id/tv_tab_name"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="HOME"
/>
这是创建布局的代码部分:
and here is the portion of code that creates the tablayout:
for (int i = 0; i < NUM_OF_TABS; i++)
tabLayout.addTab(tabLayout.newTab());
adapter = new LandingPagerAdapter(getApplicationContext(),getSupportFragmentManager(), tabLayout.getTabCount());
//Adding adapter to pager
viewPager.setAdapter(adapter);
tabLayout.addOnTabSelectedListener(this);
tabLayout.setupWithViewPager(viewPager);
// Iterate over all tabs and set the custom view
for (int i = 0; i < tabLayout.getTabCount(); i++) {
TabLayout.Tab tab = tabLayout.getTabAt(i);
tab.setCustomView(adapter.getTabView(i));
}
tabLayout.getTabAt(0).select();
最后是负责应用选择器和自定义视图的getTabView方法:
and finally here is the getTabView method responsible for applying the selector and custom view:
public class LandingPagerAdapter extends FragmentStatePagerAdapter {
private final Context context;
//integer to count number of tabs
int tabCount;
private Fragment mCurrentFragment;
private String[] tabTitles = new String[]{"Home", "tab2"};
// configure tab icons
int[] imageTabResId = {
R.drawable.home_tab_selector,
R.drawable.tab_two_selector,;
//Constructor to the class
public LandingPagerAdapter(Context context, FragmentManager fm, int tabCount) {
super(fm);
this.context = context;
this.tabCount = tabCount;
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
TabHomeContainerFragment tab1 = new TabHomeContainerFragment();
return tab1;
case 1:
TabTwoContainerFragment tab2 = new TabTwoContainerFragment();; //Todo: these should all be containers
return tab2;
default:
return null;
}
}
//Overriden method getCount to get the number of tabs
@Override
public int getCount() {
return tabCount;
}
public Fragment getCurrentFragment() {
return mCurrentFragment;
}
@Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
if (getCurrentFragment() != object) {
mCurrentFragment = ((Fragment) object);
}
super.setPrimaryItem(container, position, object);
}
@Override
public CharSequence getPageTitle(int position) {
return tabTitles[position];
}
public View getTabView(int position) {
// Given you have a custom layout in `res/layout/custom_tab.xml` with a TextView and ImageView
View v = LayoutInflater.from(context).inflate(R.layout.custom_landingpagetab, null);
TextView tv = (TextView) v.findViewById(R.id.tv_tab_name);
tv.setText(tabTitles[position]);
ImageView img = (ImageView) v.findViewById(R.id.iv_imgview);
img.setImageDrawable(ContextCompat.getDrawable(getApplicationContext(),imageTabResId[position]));
return v;
}
}
getTabView中的通知我正在将图像资源设置为类字段中数组中的选择器. 但我一直在测试的api 24上的设备上没有任何反应.
Notice in getTabView i am setting the image resource to be the selector in the array in the class field. but nothing happens on the device on api 24 i have been testing on.
推荐答案
我正在使用支持库27.1.1,并且遇到相同的问题.经过一些研究,我发现必须明确定义 state_selected .参见下面的代码:
I'm using support library 27.1.1 and facing the same problem. After some research I found that the state_selected must be defined clearly. See code below:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/ic_chat_disabled" android:state_selected="false"/>
<item android:drawable="@drawable/ic_chat_enabled" android:state_selected="true"/>
</selector>
android:state_selected ="false" 必须具有!
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