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Android多次滑动视图

[英]Android Multiple Swipe Views

 原文  2013-09-22 14:42:05  0   1    java/ android/ android-layout/ android-fragments/ android-viewpager

问题描述

Recently I've been trying to create an advanced look and feel for my apps by implementing multiple swipe views to it. 最近，我一直在尝试通过实现多个滑动视图来为我的应用创建高级外观。

Let me explain what I mean by "multiple swipe view": 让我通过“多次滑动视图”来解释我的意思：

令人惊讶地展示了我的目标

And please excuse my poor Paint skills. 请原谅我糟糕的油漆技巧。

As you can see I'm simply trying to stack swipe-views under each other. 正如您所看到的，我只是想在彼此之下堆叠滑动视图。 Each swipe-view contains different fragments of course. 每个滑动视图当然包含不同的片段。

I successfully created one swipe view but that's all I've managed to do. 我成功创建了一个滑动视图，但这就是我所做的一切。 To create one swipe-View I created PagerAdapter class that extends from FragmentPagerAdapter: 要创建一个滑动视图，我创建了从FragmentPagerAdapter扩展的PagerAdapter类： 

    public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        Fragment fragment; 
        switch(i){
        case 0:
             fragment = new MyFragment1();
             break;
        case 1:
             fragment = new MyFragment2();
             break;
        case 2:
             fragment = new MyFragment3();
             break;
        default:
             throw new IllegalArgumentException("Invalid section number");
        }

        return fragment;
    }}

The class named "MyFragment1/2/3" is a class that creates a view with the correct layout: 名为“MyFragment1 / 2/3”的类是一个使用正确布局创建视图的类： 

    public static class MyFragment1 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.simpletab, null);
        return v;
}
}

I created a ViewPager and a SectionsPagerAdapter. 我创建了一个ViewPager和一个SectionsPagerAdapter。 

    SectionsPagerAdapter mSectionsPagerAdapter;
ViewPager mViewPager;

Also, in the onCreate function of the MainActivity I added: 另外，在MainActivity的onCreate函数中我添加了： 

        mSectionsPagerAdapter = new SectionsPagerAdapter(
            getSupportFragmentManager());


    mViewPager = (ViewPager) findViewById(R.id.comp);
    mViewPager.setAdapter(mSectionsPagerAdapter);

And that gives me the swipe-view. 这给了我一个滑动视图。 Now I tried to make two of them so I wrote another PagerAdapter class that initiate different fragment. 现在我尝试制作其中两个，所以我写了另一个启动不同片段的PagerAdapter类。 I also created a new ViewPager and defined it as I did for the first one: 我还创建了一个新的ViewPager，并像第一个那样定义它： 

SectionsPagerAdapter mSectionsPagerAdapter;
OtherSectionsPagerAdapter OtherPagerAdapter;

ViewPager mViewPager;
ViewPager OtherViewPager;

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

    // Set up the action bar.
    //final ActionBar actionBar = getActionBar();
    //actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    // Create the adapter that will return a fragment for each of the three
    // primary sections of the app.
    mSectionsPagerAdapter = new SectionsPagerAdapter(
            getSupportFragmentManager());

    OtherPagerAdapter = new OtherSectionsPagerAdapter (getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.comp);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    OtherViewPager= (ViewPager) findViewById(R.id.ScreenPager);
    OtherViewPager.setAdapter(OtherPagerAdapter);

This is my main_activity.xml: 这是我的main_activity.xml： 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<android.support.v4.view.ViewPager
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/ScreenPager"
    android:layout_width="wrap_content"
    android:layout_height="150dp"
    android:fadingEdge="vertical"
    app:context=".MainActivity" >
</android.support.v4.view.ViewPager>

<android.support.v4.view.ViewPager
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/comp"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:fadingEdge="vertical"
    app:context=".MainActivity" >
</android.support.v4.view.ViewPager></LinearLayout>

And if I'm trying to run the app, it crashes. 如果我正在尝试运行应用程序，它会崩溃。 What am I doing wrong and could you please point me to the right way? 我做错了什么，请你指出正确的方法吗？

EDIT: Here is the logcat that I get after crashing: 编辑：这是崩溃后我得到的logcat： 

    09-22 16:56:14.283: E/AndroidRuntime(8816): FATAL EXCEPTION: main
09-22 16:56:14.283: E/AndroidRuntime(8816): java.lang.IllegalArgumentException: Invalid section number
09-22 16:56:14.283: E/AndroidRuntime(8816):     at com.example.casio.MainActivity$compSectionsPagerAdapter.getItem(MainActivity.java:707)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:97)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:832)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.support.v4.view.ViewPager.populate(ViewPager.java:1048)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.View.measure(View.java:15848)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.View.measure(View.java:15848)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.View.measure(View.java:15848)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.View.measure(View.java:15848)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2189)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.View.measure(View.java:15848)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1905)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1104)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1284)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.Choreographer.doCallbacks(Choreographer.java:562)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.Choreographer.doFrame(Choreographer.java:532)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.os.Handler.handleCallback(Handler.java:730)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.os.Handler.dispatchMessage(Handler.java:92)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.os.Looper.loop(Looper.java:137)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at android.app.ActivityThread.main(ActivityThread.java:5103)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at java.lang.reflect.Method.invokeNative(Native Method)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at java.lang.reflect.Method.invoke(Method.java:525)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-22 16:56:14.283: E/AndroidRuntime(8816):     at dalvik.system.NativeStart.main(Native Method)
09-22 17:58:20.469: E/AndroidRuntime(12171): FATAL EXCEPTION: main
09-22 17:58:20.469: E/AndroidRuntime(12171): java.lang.IllegalArgumentException: Invalid section number
09-22 17:58:20.469: E/AndroidRuntime(12171):    at com.example.casio.MainActivity$compSectionsPagerAdapter.getItem(MainActivity.java:707)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:97)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:832)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.support.v4.view.ViewPager.populate(ViewPager.java:1048)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.View.measure(View.java:15848)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.View.measure(View.java:15848)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.View.measure(View.java:15848)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.View.measure(View.java:15848)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2189)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.View.measure(View.java:15848)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1905)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1104)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1284)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.Choreographer.doCallbacks(Choreographer.java:562)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.Choreographer.doFrame(Choreographer.java:532)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.os.Handler.handleCallback(Handler.java:730)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.os.Handler.dispatchMessage(Handler.java:92)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.os.Looper.loop(Looper.java:137)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at android.app.ActivityThread.main(ActivityThread.java:5103)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at java.lang.reflect.Method.invokeNative(Native Method)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at java.lang.reflect.Method.invoke(Method.java:525)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-22 17:58:20.469: E/AndroidRuntime(12171):    at dalvik.system.NativeStart.main(Native Method)

1 个解决方案

解决方案1
 1 已采纳  2013-09-22 14:58:59

Delete these lines from your both ViewPagers. 从两个ViewPagers中删除这些行。 

xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"

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