android - PageTabStrip 类未找到异常

Question

好吧，我决定只使用 pagertitlestrip。我假设我使用的支持库不包含 pagertabstrip。我不确定如何解决这个问题，因为我认为我已经正确更新了所有内容。编辑:这不再存在了吗？当我将 PagerTabStrip 更改为 PagerTitleStrip 时，一切正常，但我无法与预期的标题进行交互，因为这就是我想使用 PagerTabStrip 的原因。

我已经回到基础来寻找问题的根源。我开始了一个导入 ABS 的新项目。我设置了一个非常简单的 pagerAdapter 和一个简单的 fragment 。我使用了一本通用书籍中的示例，但我仍然遇到同样的错误。未找到类异常。找不到 PagerTabStrip。发布的堆栈每次都会出现相同的错误。如果我删除 PagerTabStrip 然后一切正常。

xml

<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pager"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <android.support.v4.view.PagerTabStrip
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="top" />

</android.support.v4.view.ViewPager>

主要 Activity

package com.example.pagetabswipe;

import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.view.Menu;

import com.actionbarsherlock.app.SherlockFragmentActivity;

public class MainActivity extends SherlockFragmentActivity {

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

        ViewPager pager = (ViewPager)findViewById(R.id.pager);
        pager.setAdapter(new SampleAdapter(getSupportFragmentManager(), this));
    }
}

适配器

package com.example.pagetabswipe;

import android.content.Context;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

public class SampleAdapter extends FragmentPagerAdapter {
    Context ctxt=null;
    public SampleAdapter(FragmentManager fm, Context ctxt) {
        super(fm);
        this.ctxt=ctxt;
        // TODO Auto-generated constructor stub
    }

    @Override
    public Fragment getItem(int position) {
        return (EditorFragment.newInstance(position));
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return 10;
    }
    @Override
    public String getPageTitle(int position) {
    return(EditorFragment.getTitle(ctxt, position));
    }
}

fragment

package com.example.pagetabswipe;

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import com.actionbarsherlock.app.SherlockFragment;

public class EditorFragment extends SherlockFragment {
    private static final String KEY_POSITION = "position";

    static EditorFragment newInstance(int position) {
        EditorFragment frag = new EditorFragment();
        Bundle args = new Bundle();
        args.putInt(KEY_POSITION, position);
        frag.setArguments(args);
        return (frag);
    }

    static String getTitle(Context ctxt, int position) {
        return (String.format(ctxt.getString(R.string.hint), position + 1));
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View result = inflater.inflate(R.layout.editor, container, false);
        EditText editor = (EditText) result.findViewById(R.id.editor);
        int position = getArguments().getInt(KEY_POSITION, -1);
        editor.setHint(getTitle(getActivity(), position));
        return (result);
    }
}

错误

11-24 18:01:25.630: E/AndroidRuntime(3505): FATAL EXCEPTION: main
11-24 18:01:25.630: E/AndroidRuntime(3505): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.pagetabswipe/com.example.pagetabswipe.MainActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class android.support.v4.view.PagerTabStrip
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1696)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1716)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.app.ActivityThread.access$1500(ActivityThread.java:124)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:968)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.os.Handler.dispatchMessage(Handler.java:99)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.os.Looper.loop(Looper.java:130)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.app.ActivityThread.main(ActivityThread.java:3806)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at java.lang.reflect.Method.invokeNative(Native Method)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at java.lang.reflect.Method.invoke(Method.java:507)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at dalvik.system.NativeStart.main(Native Method)
11-24 18:01:25.630: E/AndroidRuntime(3505): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class android.support.v4.view.PagerTabStrip
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at com.actionbarsherlock.internal.ActionBarSherlockCompat.setContentView(ActionBarSherlockCompat.java:853)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at com.actionbarsherlock.app.SherlockFragmentActivity.setContentView(SherlockFragmentActivity.java:262)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at com.example.pagetabswipe.MainActivity.onCreate(MainActivity.java:14)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1660)
11-24 18:01:25.630: E/AndroidRuntime(3505):     ... 11 more
11-24 18:01:25.630: E/AndroidRuntime(3505): Caused by: java.lang.ClassNotFoundException: android.support.v4.view.PagerTabStrip in loader dalvik.system.PathClassLoader[/data/app/com.example.pagetabswipe-2.apk]
11-24 18:01:25.630: E/AndroidRuntime(3505):     at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.view.LayoutInflater.createView(LayoutInflater.java:471)
11-24 18:01:25.630: E/AndroidRuntime(3505):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
11-24 18:01:25.630: E/AndroidRuntime(3505):     ... 20 more

任何帮助都会很棒。我不确定去哪里解决这个问题。我觉得我错过了一些非常基本的东西，这些东西阻止了在支持库中找到 PagerTabStrip。

Answer 1

对我来说，这最终是由于底层 actionbarsherlock 库具有旧版本的支持库。

在 eclipse 中，我从 actionbarsherlock 库项目的构建路径中删除了 android 支持库。

然后我听从了这里的建议，PagerTabStrip cannot be resolved to a type ,

Right Click on you project..

click on "Android Tools" -> "Add Support Library"

after that it will download the android-support.jar. and add it to your project.

after that your eclipse will recognize PagerTabStrip