我试图将相同的类多次添加到viewpager，以显示从sqlite DB读取的不同信息。问题在于创建视图时，总是覆盖当前视图中的对象，文本视图等，而不是每个页面的片段。
names = new ArrayList<String>();
for (int d : descritions) {
Description temp = DBCompanies.getDescriptionById(db_path,
GSSettings.DBCODE, d, Locale.getDefault().getLanguage(),
GSSettings.DEFAULTLANGUAGE, false);
names.add(temp.getTitle());
}
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
// mViewPager.setCurrentItem(0);
mViewPager.refreshDrawableState();
...
我该如何避免这种行为？
感谢。
编辑：
我添加了更多代码来澄清我的问题：
framecompany100.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ly_main"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbarDefaultDelayBeforeFade="500"
android:scrollbarFadeDuration="200"
android:scrollbarThumbVertical="@drawable/scrollbar_vertical_thumb_company" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<Gallery
android:id="@+id/ga_image"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="2dp" />
<RelativeLayout
android:id="@+id/ly_details"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/ga_image" >
<ImageView
android:id="@+id/iv_options"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_margin="5dp"
android:src="@drawable/ic_button_options" />
<RelativeLayout
android:id="@+id/ly_details_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginRight="5dp"
android:layout_toRightOf="@+id/iv_options"
android:background="#77ffffff" >
<TextView
android:id="@+id/tv_address" android:text="kldfjhskdjhfksj"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:textSize="15sp" />
</RelativeLayout>
</RelativeLayout>
<TextView
android:id="@+id/tv_description"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/ly_details"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:textSize="15sp"
android:textStyle="bold" />
</RelativeLayout>
以及此布局的类：
FrameCompany100.java
public class FrameCompany100 extends Fragment implements OnClickListener,
PictureUpdater, FragmentName {
private Bundle data = new Bundle();
private Gallery image;
private Description description;
private BaseAdapter adapter;
private String db_path;
private GuiParams main_params;
private Company company;
private String name = "";
@Override
public void onCreate(Bundle savedInstanceState) {
data = this.getArguments();
if (savedInstanceState != null)
data = savedInstanceState;
db_path = "/data/data/" + getActivity().getPackageName()
+ GSSettings.DB_PATH;
description = DBCompanies.getDescriptionById(db_path,
GSSettings.DBCODE, data.getInt("descriptionId"), Locale
.getDefault().getLanguage(), "es", false);
company = DBCompanies.getCompany(db_path, GSSettings.DBCODE,
description.getCompanyId());
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.framecompany100, container, false);
}
void init() {
try {
Display display = getActivity().getWindowManager()
.getDefaultDisplay();
int height = display.getHeight();
final int width = display.getWidth();
// params
main_params = DBCompanies.getGuiParams(db_path, GSSettings.DBCODE,
description.getCompanyId(), GSSettings.body);
if (main_params == null || main_params.getBackgroundcolor() == null
|| main_params.getBackgroundcolor().equals("")
|| main_params.getTextcolor() == null
|| main_params.getTextcolor().equals(""))
main_params = DBApp.getGuiParam(db_path, GSSettings.DBCODE,
GSSettings.body);
// main Layout
RelativeLayout ly_main = (RelativeLayout) getActivity()
.findViewById(R.id.ly_main);
try {
ly_main.setBackgroundColor(Color.parseColor(main_params
.getBackgroundcolor()));
} catch (Exception e) {
}
Typeface font_body = null;
try {
font_body = Typeface.createFromAsset(getActivity().getAssets(),
"fonts/" + main_params.getFont());
} catch (Exception e) {
font_body = Typeface.createFromAsset(
getActivity().getAssets(),
"fonts/"
+ DBApp.getGuiParam(db_path, GSSettings.DBCODE,
GSSettings.body).getFont());
}
TextView tv_description = (TextView) getActivity().findViewById(
R.id.tv_description);
try {
tv_description.setTextColor(Color.parseColor(main_params
.getTextcolor()));
} catch (Exception e) {
}
if (description == null) {
tv_description.setText(R.string.nodescription);
} else {
tv_description.setText(description.getText());
}
TextView tv_address = (TextView) getActivity().findViewById(
R.id.tv_address);
try {
tv_address.setTextColor(Color.parseColor(main_params
.getTextcolor()));
} catch (Exception e) {
}
.....
}
@Override
public void onResume() {
init();
// ((MainLayout) getActivity()).setDescription(description);
super.onResume();
}
FragmentPagerAdapter
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int i) {
Description temp = DBCompanies.getDescriptionById(db_path,
GSSettings.DBCODE, descritions[i], Locale.getDefault()
.getLanguage(), GSSettings.DEFAULTLANGUAGE, false);
Fragment fragment = null;
try {
fragment = new CompanyLayout100();
((FragmentName) fragment).setName(temp.getTitle());
Bundle bundle = new Bundle();
bundle.putInt("descriptionId", temp.getId());
fragment.setArguments(bundle);
} catch (Exception e) {
}
return fragment;
}
@Override
public int getCount() {
return descritions.length;
// return fragments.size();
}
@Override
public CharSequence getPageTitle(int position) {
String name = "";
try {
name = names.get(position);
} catch (Exception e) {
}
return name;
}
}
正在发生的事情是，viewpager为这些帧创建视图，但始终在可见帧中输入数据。我认为是因为layout.xml是相同的，所以只有一个id，所有对象都指向可见的布局。
答案 0 :(得分：0)
您需要一个FragmentPagerAdapter来创建实例...
public class PagerAdapter extends FragmentPagerAdapter {
int pages;
public PagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public int getCount() {
return pages;
}
@Override
public Fragment getItem(int position) {
return MyFragment.newInstance(position);
}
public void setPages(int no) {
pages = no;
}
}
所以在主要活动中你附上了PagerAdapter ......
adapter = new PagerAdapter(getSupportFragmentManager());
adapter.setPages(noPages);
pager.setAdapter(adapter);
最后，您需要包含newInstance方法的Fragment。查看此http://android-developers.blogspot.de/2011/08/horizontal-view-swiping-with-viewpager.html了解更多信息。
干杯！
编辑＃1 ：MyFragment; 注意：必须将位置作为参数传递
public class MyFragment extends SherlockFragment {
private static final String KEY_POSITION="position";
static MyFragment newInstance(int position) {
MyFragment frag=new MyFragment();
Bundle args=new Bundle();
args.putInt(KEY_POSITION, position);
frag.setArguments(args);
return(frag);
}
@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(String.format(getString(R.string.hint), position + 1));
return(result);
}
}