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首先姆钉，檢查你的ruby源： gem sources -l 默認(rèn)情況是 *** CURRENT SOURCES *** https://rubyg...
Arrays:工具類 int[] arr = {34,56,78,89}; Arrays.toString(arr);//吧數(shù)組中的數(shù)據(jù)轉(zhuǎn)成字符...
傳值 Intent intent =newIntent(MainActivity.this,Main2Activity.class); Stri...
Intent傳值 Intent intent =newIntent(MainActivity.this,Main2Activity.class)...