ViewPager+Fragment避免重復createview

打開app，一開始為第一個Fragment02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1 setUserVisibleHint.isVisibleToUser=false02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2 setUserVisibleHint.isVisibleToUser=false02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1 setUserVisibleHint.isVisibleToUser=true02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onAttach02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onCreate02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onAttach02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onCreate02-09 14:02:12.551 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onCreateView02-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onActivityCreated02-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis W/FragmentManager: moveToState: Fragment state for MainFragment2{5434690 #0 id=0x7f0c0056 android:switcher:2131492950:1} not updated inline; expected state 3 found 202-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onCreateView02-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onActivityCreated02-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onStart02-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onResume02-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onStart02-09 14:02:12.561 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onResume切換到第二個Fragment02-09 14:03:21.981 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3 setUserVisibleHint.isVisibleToUser=false02-09 14:03:21.981 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1 setUserVisibleHint.isVisibleToUser=false02-09 14:03:21.981 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2 setUserVisibleHint.isVisibleToUser=true02-09 14:03:21.981 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onAttach02-09 14:03:21.981 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onCreate02-09 14:03:21.981 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onCreateView02-09 14:03:21.991 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onActivityCreated02-09 14:03:21.991 30159-30159/com.tianjiyun.glycuresis W/FragmentManager: moveToState: Fragment state for MainFragment3{863ec84 #2 id=0x7f0c0056 android:switcher:2131492950:2} not updated inline; expected state 3 found 202-09 14:03:21.991 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onStart02-09 14:03:21.991 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onResume切換到第三個Fragment02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4 setUserVisibleHint.isVisibleToUser=false02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2 setUserVisibleHint.isVisibleToUser=false02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3 setUserVisibleHint.isVisibleToUser=true02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onAttach02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onCreate02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onPause02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onStop02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onDestroyView02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onCreateView02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onActivityCreated02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis W/FragmentManager: moveToState: Fragment state for MainFragment4{6fa481c #3 id=0x7f0c0056 android:switcher:2131492950:3} not updated inline; expected state 3 found 202-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onStart02-09 14:04:54.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onResume切換到第四個Fragment02-09 14:05:30.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3 setUserVisibleHint.isVisibleToUser=false02-09 14:05:30.941 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4 setUserVisibleHint.isVisibleToUser=true02-09 14:05:30.951 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onPause02-09 14:05:30.951 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onStop02-09 14:05:30.951 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onDestroyView最后且回到第一個Fragment02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1 setUserVisibleHint.isVisibleToUser=false02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2 setUserVisibleHint.isVisibleToUser=false02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4 setUserVisibleHint.isVisibleToUser=false02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1 setUserVisibleHint.isVisibleToUser=true02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onCreateView02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onActivityCreated02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onStart02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment1onResume02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onCreateView02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onActivityCreated02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis W/FragmentManager: moveToState: Fragment state for MainFragment2{5434690 #0 id=0x7f0c0056 android:switcher:2131492950:1} not updated inline; expected state 3 found 202-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onStart02-09 14:06:05.651 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment2onResume02-09 14:06:06.101 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onPause02-09 14:06:06.101 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onStop02-09 14:06:06.101 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment3onDestroyView02-09 14:06:06.101 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onPause02-09 14:06:06.101 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onStop02-09 14:06:06.101 30159-30159/com.tianjiyun.glycuresis V/Kuby_test: MainFragment4onDestroyView一般createView都是一次就行了，因為有時候請求網絡啊，或者一些數據已經改變了，后來再切回來就恢復了初始狀態。Android官方為了性能，做了這樣的靈活設置，切換到下一個fragment的時候會預加載相鄰的Fragment，然后把不相鄰的都銷毀掉，切回被銷毀掉的Fragment的時候又會重新createView一次。這樣做可能性能得到提高，可是實際開發中卻顯得有點不方便，也許是我沒有領會到更高級的寫法。那么我只想要他們老老實實的像Activity一樣怎么辦呢？這就是這篇文章的目的解決辦法：具體情況看我寫的這個demo，自定義了一個Fragment的超類BaseFragment，只要繼承這個BaseFragment，不要復寫生命周期，復寫幾個方法就可以了。使用情況請看上面的注釋。下載地址：http://download.csdn.net/detail/u014736095/9750716很多時候開發者我為了方便使用了show和hind的方法去控制他們，因為這樣可以解決viewpager的預加載問題。但是這樣沒有切換動畫，如重Fragment1切換到Fragment4，用show和hind就不會按照1.2.3-->4這樣的切換動畫，而是1-->4。