performance - Android scroll up hide view and scroll down show view effect like twitter -


जब स्क्रॉल अप करें दृश्यपेज टैब छुपाएं (होम, डिस्कवर, गतिविधि) तो ट्विटर की तरह स्क्रॉलिंग प्रभाव कैसे करें। या स्क्रॉल डाउन शो विकल्प दृश्य में फेसबुक स्क्रॉलिंग की तरह प्रभाव, जबकि ऊपर स्क्रॉल ऑप्शन विकल्प दृश्य (स्थिति, फोटो, चेकइन)। कोई भी उदाहरण लिंक कृपया मदद करेगा।

आसान समाधान: 

  सार्वजनिक सार कक्षा ऑनसक्रोलऑब्सर्वर का निष्पादन AbsListView.OnScrollListener {onScrollUp पर सार्वजनिक सार शून्य;); स्कॉटलैंडडाउन पर सार्वजनिक सार शून्य; @ScrollStateChanged (AbsListView दृश्य, इंट स्क्रोलस्टेट) पर सार्वजनिक शून्य को ओवरराइड करें {} int last = 0; बुलियन नियंत्रण = सच; @Scroll पर सार्वजनिक शून्य को ओवरराइड करें (AbsListView दृश्य, इंट चालू, इंट विज़िब्स, पूर्णांक कुल) {यदि (वर्तमान & lt; अंतिम & amp;! नियंत्रण) {onScrollUp (); नियंत्रण = सच; } और अगर (वर्तमान & gt; अंतिम & amp; amp; नियंत्रण) {onScrollDown (); नियंत्रण = गलत; } अंतिम = वर्तमान; }   
 उपयोग:  
  listView.setOnScrollListener (नया ऑनसक्रोलओब्सर्वर () {@Override सार्वजनिक शून्य सेस्क्रोलअप () {} @ ओवरराइड सार्वजनिक शून्य पर ScrollDown () { }});

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