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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" >
</android.support.v4.view.ViewPager>
</LinearLayout>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- Dummy content. -->
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView android:id="@android:id/text1"
style="?android:textAppearanceLarge"
android:textStyle="bold"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp" />
<TextView style="?android:textAppearanceMedium"
android:lineSpacingMultiplier="1.2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="lorem_ipsum" />
</LinearLayout>
</ScrollView>
package com.example.viewpager;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.NavUtils;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends FragmentActivity {
private ViewPager viewPager;
private ScreenSlidePagerAdapter viewPagerAdapter;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_screen_slide);
viewPager = (ViewPager)findViewById(R.id.viewpager);
//getSupportFragmentManager replace getFragmentManager
FragmentManager mFragments = getSupportFragmentManager();
viewPagerAdapter = new ScreenSlidePagerAdapter(mFragments);
viewPager.setAdapter(viewPagerAdapter);
viewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener(){
@Override
public void onPageSelected(int position) {
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu){
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item){
return super.onOptionsItemSelected(item);
}
private class ScreenSlidePagerAdapter extends android.support.v4.app.FragmentStatePagerAdapter {
private static final int NUM_PAGES = 5;
public ScreenSlidePagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return ScreenSlidePageFragment.create(position);
}
@Override
public int getCount() {
return NUM_PAGES;
}
}
}
package com.example.viewpager;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class ScreenSlidePageFragment extends Fragment {
public static final String ARG_PAGE = "page";
/**
* The fragment's page number, which is set to the argument value for {@link #ARG_PAGE}.
*/
private int mPageNumber;
/**
* Factory method for this fragment class. Constructs a new fragment for the given page number.
*/
public static Fragment create(int pageNumber) {
ScreenSlidePageFragment fragment = new ScreenSlidePageFragment();
Bundle args = new Bundle();
args.putInt(ARG_PAGE, pageNumber);
fragment.setArguments(args);
return fragment;
}
public ScreenSlidePageFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPageNumber = getArguments().getInt(ARG_PAGE);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout containing a title and body text.
ViewGroup rootView = (ViewGroup) inflater
.inflate(R.layout.fragment_screen_slide_page, container, false);
// Set the title view to show the page number.
((TextView) rootView.findViewById(android.R.id.text1)).setText(
getString(R.string.title_template_step, mPageNumber + 1));
return rootView;
}
/**
* Returns the page number represented by this fragment object.
*/
public int getPageNumber() {
return mPageNumber;
}
}
11-29 17:44:53.925: D/jdwp(30233): sendBufferedRequest : len=0x45
11-29 17:44:53.927: W/asset(30233): AssetManager-->addDefaultAssets CIP path not exsit!
11-29 17:44:53.949: D/dalvikvm(30233): open_cached_dex_file : /data/app/com.example.viewpager-1.apk /data/dalvik-cache/data@app@com.example.viewpager-1.apk@classes.dex
11-29 17:44:54.168: D/AndroidRuntime(30233): Shutting down VM
11-29 17:44:54.168: W/dalvikvm(30233): threadid=1: thread exiting with uncaught exception (group=0x40e2b978)
11-29 17:44:54.168: W/dalvikvm(30233): threadid=1: uncaught exception occurred
11-29 17:44:54.169: W/System.err(30233): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.viewpager/com.example.viewpager.MainActivity}: java.lang.NullPointerException
11-29 17:44:54.169: W/System.err(30233): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2372)
11-29 17:44:54.169: W/System.err(30233): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2424)
11-29 17:44:54.169: W/System.err(30233): at android.app.ActivityThread.access$600(ActivityThread.java:169)
11-29 17:44:54.170: W/System.err(30233): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1388)
11-29 17:44:54.170: W/System.err(30233): at android.os.Handler.dispatchMessage(Handler.java:107)
11-29 17:44:54.170: W/System.err(30233): at android.os.Looper.loop(Looper.java:194)
11-29 17:44:54.170: W/System.err(30233): at android.app.ActivityThread.main(ActivityThread.java:5433)
11-29 17:44:54.170: W/System.err(30233): at java.lang.reflect.Method.invokeNative(Native Method)
11-29 17:44:54.170: W/System.err(30233): at java.lang.reflect.Method.invoke(Method.java:525)
11-29 17:44:54.171: W/System.err(30233): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:922)
11-29 17:44:54.171: W/System.err(30233): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:689)
11-29 17:44:54.171: W/System.err(30233): at dalvik.system.NativeStart.main(Native Method)
11-29 17:44:54.171: W/System.err(30233): Caused by: java.lang.NullPointerException
11-29 17:44:54.172: W/System.err(30233): at com.example.viewpager.MainActivity.onCreate(MainActivity.java:29)
11-29 17:44:54.172: W/System.err(30233): at android.app.Activity.performCreate(Activity.java:5211)
11-29 17:44:54.172: W/System.err(30233): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1146)
11-29 17:44:54.172: W/System.err(30233): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2336)
11-29 17:44:54.172: W/System.err(30233): ... 11 more
11-29 17:44:54.172: W/dalvikvm(30233): threadid=1: calling UncaughtExceptionHandler
11-29 17:44:54.174: E/AndroidRuntime(30233): FATAL EXCEPTION: main
11-29 17:44:54.174: E/AndroidRuntime(30233): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.viewpager/com.example.viewpager.MainActivity}: java.lang.NullPointerException
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2372)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2424)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.ActivityThread.access$600(ActivityThread.java:169)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1388)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.os.Handler.dispatchMessage(Handler.java:107)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.os.Looper.loop(Looper.java:194)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.ActivityThread.main(ActivityThread.java:5433)
11-29 17:44:54.174: E/AndroidRuntime(30233): at java.lang.reflect.Method.invokeNative(Native Method)
11-29 17:44:54.174: E/AndroidRuntime(30233): at java.lang.reflect.Method.invoke(Method.java:525)
11-29 17:44:54.174: E/AndroidRuntime(30233): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:922)
11-29 17:44:54.174: E/AndroidRuntime(30233): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:689)
11-29 17:44:54.174: E/AndroidRuntime(30233): at dalvik.system.NativeStart.main(Native Method)
11-29 17:44:54.174: E/AndroidRuntime(30233): Caused by: java.lang.NullPointerException
11-29 17:44:54.174: E/AndroidRuntime(30233): at com.example.viewpager.MainActivity.onCreate(MainActivity.java:29)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.Activity.performCreate(Activity.java:5211)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1146)
11-29 17:44:54.174: E/AndroidRuntime(30233): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2336)
11-29 17:44:54.174: E/AndroidRuntime(30233): ... 11 more