我正在研究Android應用程序,我想在具有不同內容的頁面之間滑動。爲此,我使用ViewPager
。這對我來說是新的,因此我以this project爲例。我的問題是我不知道如何將內容放在不同的頁面上。簡單地說 - 我如何在第一頁上製作一些文字,在另一張 - 圖像上和第三頁上 - 一個按鈕? 它是通過不同的佈局或其他方式實現的嗎?如何在ViewPager中的佈局之間切換
這裏是我的代碼使用方法:
SampleTabsStyled.java
public class SampleTabsStyled extends FragmentActivity {
private static final String[] CONTENT = new String[] { "Recent", "Artists", "Albums", "Songs", "Playlists", "Genres" };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.simple_tabs);
FragmentPagerAdapter adapter = new GoogleMusicAdapter(getSupportFragmentManager());
ViewPager pager = (ViewPager)findViewById(R.id.pager);
pager.setAdapter(adapter);
TabPageIndicator indicator = (TabPageIndicator)findViewById(R.id.indicator);
indicator.setViewPager(pager);
}
class GoogleMusicAdapter extends FragmentPagerAdapter {
public GoogleMusicAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return TestFragment.newInstance(CONTENT[position % CONTENT.length]);
}
@Override
public CharSequence getPageTitle(int position) {
return CONTENT[position % CONTENT.length].toUpperCase();
}
@Override
public int getCount() {
return CONTENT.length;
}
}
}
simple_tabs.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.viewpagerindicator.TabPageIndicator
android:id="@+id/indicator"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
/>
</LinearLayout>
[更新]
我寫簡單TestFragment。 java,它應該顯示不同的佈局。 的問題是,在線路return TestFragment.newInstance();
,我得到這個錯誤
The method newInstance() is undefined for the type TestFragment
TestFragment.java
public class TestFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.activity_sideview, null);
}
}
而這裏的MainActivity.java
public class MainActivity extends FragmentActivity {
private static final String[] CONTENT = new String[] { "Recent", "Artists", "Albums", "Songs", "Playlists", "Genres" };
TestFragment TestFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TestFragment = new TestFragment();
FragmentPagerAdapter adapter = new GoogleMusicAdapter(getSupportFragmentManager());
ViewPager pager = (ViewPager)findViewById(R.id.pager);
pager.setAdapter(adapter);
TabPageIndicator indicator = (TabPageIndicator)findViewById(R.id.indicator);
indicator.setViewPager(pager);
}
class GoogleMusicAdapter extends FragmentPagerAdapter {
public GoogleMusicAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch(position) {
case 0:
return TestFragment.newInstance();
case 1:
/*case 1:
return ImageFragment.newInstance();
case 2:
return ButtonFragment.newInstance(); */
}
}
@Override
public CharSequence getPageTitle(int position) {
return CONTENT[position % CONTENT.length].toUpperCase();
}
@Override
public int getCount() {
return CONTENT.length;
}
}
}
能否請您解釋一下更詳細或發送一個鏈接的教程?坦率地說,我不明白怎麼做你說的一半。 –
請檢查更新 –