带图标的 Android SlidingTabLayout
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Android SlidingTabLayout with icons
提问by user1159517
I am using google's SlidingTabLayout in my view, but i want to add icons to the tabs. I'm using this http://developer.android.com/samples/SlidingTabsBasic/src/com.example.android.common/view/SlidingTabLayout.htmlCan anyone please help?
我在视图中使用 google 的 SlidingTabLayout，但我想向选项卡添加图标。我正在使用这个http://developer.android.com/samples/SlidingTabsBasic/src/com.example.android.common/view/SlidingTabLayout.html任何人都可以帮忙吗？
void setUpPager(View view){
mViewPager = (ViewPager) view.findViewById(R.id.viewpager);
mViewPager.setAdapter(new TabsPagerAdapter(getActivity()));
mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs);
mSlidingTabLayout.setViewPager(mViewPager);
}
Here is my xml:
这是我的 xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.common.view.SlidingTabLayout
android:id="@+id/sliding_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="1"
android:background="@android:color/white"/>
</LinearLayout>
回答by sahil shekhawat
Just want to give example for the Correct and accepted answer. :)
Firstly, add the tabs and set their custom view when you are adding the adapter to your viewpager. For example see following lines:
只想举例说明正确和接受的答案。:)
首先，在将适配器添加到 viewpager 时，添加选项卡并设置它们的自定义视图。例如，请参见以下几行：
mViewpager = (ViewPager) view.findViewById(R.id.pager);
//Do something with your view before setting up adapter
ViewPager.setAdapter(mSectionsPagerAdapter);
mSlidingTabLayout = (SlidingTabLayout) View().findViewById(R.id.sliding_tabs);
mSlidingTabLayout.setCustomTabView(R.layout.custom_tab_title, R.id.tabtext);
mSlidingTabLayout.setViewPager(mViewPager);
Where sliding_tabsare the tabs_titles to be added and are defined in xmlfile of the viewpagerlike:
sliding_tabs要添加的 tabs_titles在哪里，并在类似xml文件中定义viewpager：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<com.packagename.SlidingTabLayout
android:id="@+id/sliding_tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/sliding_tabs"
tools:context=".ActivityUser"
android:fitsSystemWindows="true"
android:textStyle="bold"
android:textSize="20dp"/>
</RelativeLayout>
and where custom_tab_titleis a separate xmlfile in your layoutfolder.For example:
哪里custom_tab_title是一个独立xml的文件layoutfolder.For例如：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/titletab">
<ImageView
android:id="@+id/tabimage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:layout_marginLeft="2dp"
/>
<TextView
android:id="@+id/tabtext"
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="bottom"
android:paddingBottom="15dp"
android:paddingLeft="4dp"
android:paddingRight="4dp"/>
</LinearLayout>
and you can set the image for a particular tab by:
您可以通过以下方式为特定选项卡设置图像：
Drawable tab_image = getResources().getDrawable(getResources().getIdentifier("image_name_in_drawable", "drawable", "com.packagename"));
tab_image.setBounds(0, 0, 40, 40); //Setting up the resolution for image
ImageSpan imageSpanresource = new ImageSpan(tab_image);
//Notice the additional space at the end of the String
resourcesstring = "Tab1 ";
//here we are setting up the position to display image..
SpannableString viewpager_tab_title = new SpannableString(resourcesstring );
viewpager_tab_title.setSpan(imageSpanresource, resourcesstring.length()-1, resourcesstring.length(), 0);
Noticethat I have added an additional space to the viewpager_tab_titleand am setting up the image to that position, so that the actual string is displayed completely.
请注意，我在 中添加了一个额外的空间，viewpager_tab_title并将图像设置到该位置，以便完整显示实际字符串。
回答by Nikola Despotoski
Use mSlidingTabLayout.setCustomTabView(int layoutResId, int textViewId)to inflate a custom layout for the SlidingTabLayouttab views.
用于mSlidingTabLayout.setCustomTabView(int layoutResId, int textViewId)扩展SlidingTabLayout选项卡视图的自定义布局。
When SlidingTabLayouttries to populate the tab strips, initially looks for any specified layout resource to inflate. Otherwise, it inflates default tab view.
当SlidingTabLayout尝试填充选项卡条时，最初会查找要膨胀的任何指定布局资源。否则，它会夸大默认选项卡视图。
回答by Samuel
To customize SlidingTabLayout the way you want, you only need to modify the method populateTabStrip(). With this approach, you do not need care about any TextView.
要以您想要的方式自定义 SlidingTabLayout，您只需要修改 populateTabStrip() 方法。使用这种方法，您不需要关心任何 TextView。
public void populateTabStrip() {
final PagerAdapter adapter = mViewPager.getAdapter();
final View.OnClickListener tabClickListener = new TabClickListener();
for (int i = 0; i < adapter.getCount(); i++) {
View tabView = null;
tabView = LayoutInflater.from(getContext()).inflate(R.layout.tab_layout, mTabStrip,
false);
ImageView iconImageView = (ImageView) tabView.findViewById(R.id.tab_layout_icon);
iconImageView.setImageDrawable(getContext().getResources().getDrawable(getIconResourceArray()[i]));
tabView.setOnClickListener(tabClickListener);
mTabStrip.addView(tabView);
}
}
Your layout could be something like that:
您的布局可能是这样的：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="75dp"
android:paddingTop="15dp"
android:layout_height="50dp"
android:orientation="vertical">
<ImageView
android:id="@+id/tab_layout_icon"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center" />
</LinearLayout>
The way you implement the getResourceArray() method is up to you. Here is how I did:
实现 getResourceArray() 方法的方式取决于您。这是我的做法：
public class IconSlidingTabLayout extends HorizontalScrollView {
private Integer[] mIconResourceArray;
...
public Integer[] getIconResourceArray() {
return mIconResourceArray;
}
public void setIconResourceArray(Integer[] mIconResourceArray) {
this.mIconResourceArray = mIconResourceArray;
}
}
In the activity:
在活动中：
mSlidingTabLayout = (IconSlidingTabLayout) findViewById(R.id.icon_sliding_tab_layout);
Integer[] iconResourceArray = { R.drawable.news_tab_icon,
R.drawable.challenges_tab_icon, R.drawable.trophies_tab_icon,
R.drawable.leaderboard_tab_icon };
mSlidingTabLayout.setIconResourceArray(iconResourceArray);
Be aware that in order to have access to R.layout.tab_layout*, you have to import yourpackage.R instead of android.R as it is by default in SlidingTabStrip.
请注意，为了访问 R.layout.tab_layout*，您必须导入 yourpackage.R 而不是 android.R，因为它在 SlidingTabStrip 中是默认的。
