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我想添加一個按鈕和按鈕Clicklistenner。 我找不到在哪裏添加按鈕點擊，當我點擊按鈕時，我想要更改imageview（查看器區域）的透明度並更改文本的位置並顯示它。片段和添加按鈕單擊
public class SlideshowDialogFragment extends DialogFragment {
private String TAG = SlideshowDialogFragment.class.getSimpleName();
private ArrayList<Image> images;
private ViewPager viewPager;
private MyViewPagerAdapter myViewPagerAdapter;
private TextView lblCount, lblTitle, lblDate;
private int selectedPosition = 0;
private AdView mAdView;
private Button button;
static SlideshowDialogFragment newInstance() {
SlideshowDialogFragment f = new SlideshowDialogFragment();
return f;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_image_slider, container, false);
viewPager = (ViewPager) v.findViewById(R.id.viewpager);
lblCount = (TextView) v.findViewById(R.id.lbl_count);
lblTitle = (TextView) v.findViewById(R.id.title);
lblDate = (TextView) v.findViewById(R.id.date);
button = (Button) v.findViewById(R.id.button);
mAdView = (AdView) v.findViewById(R.id.adView2);
AdRequest adRequest = new AdRequest.Builder()
.build();
mAdView.loadAd(adRequest);
images = (ArrayList<Image>) getArguments().getSerializable("images");
selectedPosition = getArguments().getInt("position");
Log.e(TAG, "position: " + selectedPosition);
Log.e(TAG, "images size: " + images.size());
myViewPagerAdapter = new MyViewPagerAdapter();
viewPager.setAdapter(myViewPagerAdapter);
viewPager.addOnPageChangeListener(viewPagerPageChangeListener);
setCurrentItem(selectedPosition);
//Toast start
Context context = v.getContext();
CharSequence text = "Hello Click Fragment!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
//Toast finish
return v;
}
private void setCurrentItem(int position) {
viewPager.setCurrentItem(position, false);
displayMetaInfo(selectedPosition);
}
// page change listener
ViewPager.OnPageChangeListener viewPagerPageChangeListener = new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
displayMetaInfo(position);
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
};
private void displayMetaInfo(int position) {
lblCount.setText("< "+ (position + 1) + " of " + images.size()+" >");
Image image = images.get(position);
lblTitle.setText(image.getName());
lblDate.setText(image.getTimestamp());
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NORMAL, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
}
// adapter
public class MyViewPagerAdapter extends PagerAdapter {
private LayoutInflater layoutInflater;
public MyViewPagerAdapter() {
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
layoutInflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = layoutInflater.inflate(R.layout.image_fullscreen_preview, container, false);
ImageView imageViewPreview = (ImageView) view.findViewById(R.id.image_preview);
Image image = images.get(position);
Glide.with(getActivity()).load(image.getLarge())
.thumbnail(0.5f)
.crossFade()
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imageViewPreview);
container.addView(view);
return view;
}
@Override
public int getCount() {
return images.size();
}
@Override
public boolean isViewFromObject(View view, Object obj) {
return view == ((View) obj);
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
}
}
佈局XML：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="bottom">
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="400dp"
android:background="@android:color/black" />
<TextView
android:id="@+id/lbl_count"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:textColor="@android:color/white"
android:textSize="16dp"z
android:textStyle="bold" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/viewpager"
android:background="@color/colorPrimaryDark"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<com.google.android.gms.ads.AdView
android:id="@+id/adView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp"
ads:adSize="BANNER"
ads:adUnitId="@string/banner_home_footer">
</com.google.android.gms.ads.AdView>
<TextView
android:id="@+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:textColor="@android:color/white"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:id="@+id/date"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_margin="10dp"
android:textColor="@android:color/white" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
歡迎來到Stack Overflow！似乎有[比問題似乎需要更多的代碼]（// stackoverflow.com/help/mcve）。你能否看到將它修剪一些，以便我們能更好地理解它？ –