android - How do I return to a calling activity if the user presses BACK? -


मेरी मुख्य गतिविधि एक बाल गतिविधि है जिसमें एक ListView होता है। हालांकि यह ListView (एक AsyncTask के माध्यम से) पॉपुलेट किया जा रहा है, एक अनिश्चित प्रगति पट्टी दिखाई जाती है।

हालांकि, यह मानते हुए कि मैं एक अधीर उपयोगकर्ता हूं और मैं बैक बटन दबाता हूं, प्रगति बार रद्द कर दिया जाता है, लेकिन मुझे एक रिक्त स्क्रीन के साथ छोड़ दिया गया है। मुझे मेन लाइब्रेरी में वापस जाने के लिए एक और बार वापस जाना होगा।

मैं ऐप को सीधे वापस केवल एक बार दबाने से मुख्य गतिविधि पर वापस जाना चाहता हूं। क्या कोई मुझे सही दिशा में बता सकता है? मुझे लगता है कि मुझे finish () कहीं कॉल करना चाहिए, लेकिन मुझे नहीं पता कि इसे कहां रखा जाए। अग्रिम धन्यवाद!

डायलॉग पर उपयोग करें (जो प्रगतिशील दलाल फैली हुई है)।


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