使用Firebase的java图像滑块(Daimajia)
我试图将firebase滑块上的图片和文本加载到daimajia
滑块中,但没有显示任何内容,我使用了FirebaseRecyclerAdapter
,这是我使用下面的方法进行操作的方式:-
但是我已经宣布了
sliderShow = (SliderLayout) findViewById(R.id.slider);
在onCreate
方法中
public void GetAdverts()
{
FirebaseRecyclerAdapter<Advert,MainActivity.EventViewHolder> firebaseRecyclerAdapter_ = new FirebaseRecyclerAdapter<Advert, MainActivity.EventViewHolder>(Advert.class,
R.layout.slider_image,
MainActivity.EventViewHolder.class,
mDatabase) {
@Override
protected void populateViewHolder(MainActivity.EventViewHolder viewHolder, final Advert model, final int position) {
try{
HashMap<String,String> url_maps = new HashMap<String, String>();
List<Advert> itemlist = new ArrayList<>();
url_maps.put(model.getTitle(), model.getImageAdvert());
for(String name : url_maps.keySet()){
TextSliderView textSliderView = new TextSliderView(getApplicationContext());
// initialize a SliderLayout
textSliderView
.description(name)
.image(url_maps.get(name));
//add your extra information
textSliderView.bundle(new Bundle());
textSliderView.getBundle()
.putString("extra",name);
textSliderView.setOnSliderClickListener(new BaseSliderView.OnSliderClickListener() {
@Override
public void onSliderClick(BaseSliderView slider) {
Toast.makeText(getApplicationContext(),
"News Details ",Toast.LENGTH_LONG).show();
}
});
sliderShow.addSlider(textSliderView);
}
// sliderShow.addSlider(textSliderView);
sliderShow.setPresetTransformer(SliderLayout.Transformer.Accordion);
sliderShow.setPresetIndicator(SliderLayout.PresetIndicators.Center_Bottom);
sliderShow.setCustomAnimation(new DescriptionAnimation());
sliderShow.setDuration(10000);
}
catch (Exception e){
e.printStackTrace();
}
}
};
}
请问我哪里错了
我的更新代码强>
void Slider(){
mDatabase.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
Map<String, Advert> td = new HashMap<String, Advert>();
HashMap<String,String> url_maps = new HashMap<String, String>();
ArrayList<Advert> values = new ArrayList<>(td.values());
// List<String> keys = new ArrayList<String>(td.keySet());
for (Advert ad: values) {
// Toast.makeText(getApplicationContext(),""+ad.getImageAdvert(),Toast.LENGTH_LONG).show();
url_maps.put(ad.getTitle(),ad.getImageAdvert());
}
for(String name : url_maps.keySet()){
TextSliderView textSliderView = new TextSliderView(getApplicationContext());
// initialize a SliderLayout
textSliderView
.description(name)
.image(url_maps.get(name));
//add your extra information
textSliderView.bundle(new Bundle());
textSliderView.getBundle()
.putString("extra",name);
textSliderView.setOnSliderClickListener(new BaseSliderView.OnSliderClickListener() {
@Override
public void onSliderClick(BaseSliderView slider) {
Toast.makeText(getApplicationContext(),
"Advertise Here ",Toast.LENGTH_LONG).show();
}
});
sliderShow.addSlider(textSliderView);
}
// sliderShow.addSlider(textSliderView);
sliderShow.setPresetTransformer(SliderLayout.Transformer.Accordion);
sliderShow.setPresetIndicator(SliderLayout.PresetIndicators.Center_Bottom);
sliderShow.setCustomAnimation(new DescriptionAnimation());
sliderShow.setDuration(10000);
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
sliderShow = (SliderLayout) findViewById(R.id.slider);
}
我的广告课强>
public class Advert {
public String ImageAdvert;
public String Title;
public Advert() {
// left out for firebase ...
}
public String getImageAdvert() {
return ImageAdvert;
}
public void setImageAdvert(String imageAdvert) {
ImageAdvert = imageAdvert;
}
public String getTitle() {
return Title;
}
public void setTitle(String title) {
Title = title;
}
}
# 1 楼答案
我建议您使用两个活动(第一个活动=VoidActivity,第二个活动=MainActivity),VoidActivity从firebase数据库检索数据,然后使用SharedPerence或use intent将其发送给MainActivity。putString(),它为我运行
# 2 楼答案
FirebaseRecyclerAdapter用于在FireBaseRecyclerator内设置数据
如果您只想从DatabaseReference获取数据,那么应该使用侦听器
FirebaseDatabse - Retrieving Data
(还有第三个用于Child-ChildEventListener的侦听器)
# 3 楼答案
我建议您使用两个活动(第一个活动=VoidActivity,第二个活动=MainActivity),以便VoidActivty从firebase数据库获取数据,然后使用SharedFrence或intent将其发送给MainActivity。串