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1i使用了android设计支持tablayout,我在选项卡上同时显示了图标和文本..我使用customtabview垂直对齐图标和文本.我想在选择/取消选择时更改图标和文本的颜色.
我为不同的选项卡图标制作了选择器文件.但事情是当我运行项目时,第一个默认选项卡未被选中我希望它们默认被选中..如果我转到其他选项卡然后再刷回第一个选项卡它工作得很好..主要的问题是我不能让第一个选项卡片段被选中..请帮助我,因为我坚持过去2天..我不想使用任何来自github的库
MainActivity.java
import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.os.Bundle; import android.support.design.widget.TabLayout; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import java.util.ArrayList; import java.util.List; import android.os.Bundle; import android.support.design.widget.TabLayout; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.LayoutInflater; import android.widget.TextView; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity { private Toolbar toolbar; private TabLayout tabLayout; private ViewPager viewPager; private int[] tabIcons = { R.drawable.image1,R.drawable.image2,R.drawable.image3 }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); viewPager = (ViewPager) findViewById(R.id.viewpager); setupViewPager(viewPager); tabLayout = (TabLayout) findViewById(R.id.tabs); tabLayout.setupWithViewPager(viewPager); setupTabIcons(); } private void setupTabIcons() { TextView tabOne = (TextView) LayoutInflater.from(this).inflate(R.layout.custom_tab,null); tabOne.setText("ONE"); tabOne.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.image1,0); tabLayout.getTabAt(0).setCustomView(tabOne); TextView tabTwo = (TextView) LayoutInflater.from(this).inflate(R.layout.custom_tab,null); tabTwo.setText("TWO"); tabTwo.setCompoundDrawablesWithIntrinsicBounds(0,0); tabLayout.getTabAt(1).setCustomView(tabTwo); TextView tabThree = (TextView) LayoutInflater.from(this).inflate(R.layout.custom_tab,null); tabThree.setText("THREE"); tabThree.setCompoundDrawablesWithIntrinsicBounds(0,R.drawable.image3,0); tabLayout.getTabAt(2).setCustomView(tabThree); } private void setupViewPager(ViewPager viewPager) { ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager()); adapter.addFrag(new OneFragment(),"ONE"); adapter.addFrag(new TwoFragment(),"TWO"); adapter.addFrag(new ThreeFragment(),"THREE"); viewPager.setAdapter(adapter); } class ViewPagerAdapter extends FragmentPagerAdapter { private final List<Fragment> mFragmentList = new ArrayList<>(); private final List<String> mFragmentTitleList = new ArrayList<>(); public ViewPagerAdapter(FragmentManager manager) { super(manager); } @Override public Fragment getItem(int position) { return mFragmentList.get(position); } @Override public int getCount() { return mFragmentList.size(); } public void addFrag(Fragment fragment,String title) { mFragmentList.add(fragment); mFragmentTitleList.add(title); } @Override public CharSequence getPageTitle(int position) { return mFragmentTitleList.get(position); } } }
image1.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/x1" android:state_selected="true" /> <item android:drawable="@drawable/x2" /> </selector>
像三个不同的图像上面的三个文件.
custom_tab.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/tab" android:textColor="@color/selector" android:textSize="@dimen/tab_label" android:fontFamily="@string/font_fontFamily_medium"/>
用于文本的selector.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_selected="true" android:color="#fe5d55" /> <!-- pressed --> <item android:state_pressed="true" android:color="#fe5d55" /> <!-- focused --> <item android:color="#000000" /> <!-- default --> </selector>
有人可以帮忙吗?
解决方法
@H_404_27@ 你是什么意思未被选中.你能分享一下你想要达到的目标以及你现在所处的位置.
我不推荐你的做法.它做了很多不需要的东西来解决你的问题.我建议使用TabLayout类中的图标和文本,只需设置图标(带状态的绘图)和文本.
或者,如果需要,甚至是自定义布局,但使用TabLayout中的text1和图标.这样做有什么问题吗?
更新..
试试以下内容:
IconTextTabLayout.java:
package example.customtabs; import android.content.Context; import android.support.annotation.NonNull; import android.support.design.widget.TabLayout; import android.support.v4.view.PagerAdapter; import android.util.AttributeSet; import sample.customtabs.example.com.customtabs.R; public class IconTextTabLayout extends TabLayout { public IconTextTabLayout(Context context) { super(context); } public IconTextTabLayout(Context context,AttributeSet attrs) { super(context,attrs); } public IconTextTabLayout(Context context,AttributeSet attrs,int defStyleAttr) { super(context,attrs,defStyleAttr); } @Override public void setTabsFromPagerAdapter(@NonNull PagerAdapter adapter) { this.removeAllTabs(); int i = 0; for (int count = adapter.getCount(); i < count; ++i) { this.addTab(this.newTab().setCustomView(R.layout.custom_tab) .setIcon(YourIcons[i]) .setText(adapter.getPageTitle(i))); } } }
custom_tab.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <ImageView android:id="@android:id/icon" android:layout_width="match_parent" android:layout_height="wrap_content"/> <TextView android:id="@android:id/text1" android:layout_width="match_parent" android:layout_height="wrap_content"/> </LinearLayout>
在您的活动xml中使用IconTextTabLayout.喜欢 :
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <example.customtabs.IconTextTabLayout android:id="@+id/sliding_tabs" android:layout_width="match_parent" android:layout_height="wrap_content" app:tabMode="scrollable"/> <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>
另外,在您的活动中将视图寻呼机设置为:
IconTextTabLayout tabLayout = (IconTextTabLayout) findViewById(R.id.sliding_tabs); tabLayout.setupWithViewPager(viewPager);
覆盖viewpager适配器中的getPageTitle以提供标题.
@Override public CharSequence getPageTitle(int position) { return TITLES[i]; }
此外,如果您希望通过编写返回drawables的方法,也可以从适配器获取图标,就像getPageTitle方法一样.这是可选的.只是设计问题.
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YourIcons [] =这是一系列drawables.在您的情况下 – xml文件,包含选定和未选择的图像……