After the Android app is installed, click & amp; quot; Open & amp; quot; (Open) to solve the problem and solution.

After installing the app for Android, click & quot; Open & quot; (Open) to solve the problems and solutions.
MainActivity is as follows:

Package cc. cc; import android. app. activity; import android. content. intent; import android. OS. bundle;/*** Demo Description: ** a problem encountered more than a year ago --->: * 1 after the customer downloaded the application I participated in development from GooglePlay * 2, after clicking install * 3, there are two options at the bottom of the screen: "Open" and "complete" * 4. Click Open * 5 to enter the first Activity. In this case, perform the following operations: for example, enter the text ** 6 on an EditText, press the HOME Key * 7, find the ICON of the application on the desktop, and click it to enter the application. ** the problem occurs at this time, the text originally displayed in EditText is missing ........ * It was strange at the time. after reading the Log, I realized that the previous Activity re-executed onCreate () and onSta *. Rt () and onResume (). ** the customer is holding on to this issue, and I will never give a reasonable explanation. What should I do? * I tested several other apps on GooglePlay and found the same problem. so I told the customer: * this is a problem with the Android system and is difficult to solve. fortunately, the customer has not been entangled in empathy, and this has passed. * But this problem is always in my heart. ** another blog on CSDN recently talked about this issue. I went to stackoverflow to find the answer. * I saw the solution, but to tell the truth, I didn't understand the code. the core sentence: * if (getIntent (). getFlags () & Intent. FLAG_ACTIVITY_BROUGHT_TO_FRONT )! = 0) * I am still confused. I am unwilling to ask a few bloggers, and I have no definite answer. * For the time being, we hope you will have a chance to make it available in the future. ** I am not a code writer, but a code Porter. * The code found from stackoverflow is pasted below. the data source is also provided. ** PS: Google has been unavailable for the past two months. IT is inconvenient for IT staff who often go to some foreign websites to find information. * This may be a small sorrow of Chinese software practitioners. is there any sensitive word in the code of a foreign website ??????????? * ** Reference: * 1 http://www.atlassc.net /? P = 479*2 http://stackoverflow.com/questions/6337217/how-to-return-to-the-latest-launched-activity-when-re-launching-application-afte * 3 http://stackoverflow.com/questions/6356467/activity-stack-ordering-problem-when-launching-application-from-android-app-inst * 4 http://flowercat.iteye.com/blog/380859 * 5 http://blog.csdn.net/nupt123456789/article/details/34415849 * Thank you very much ** note: * The core idea mentioned in document 1 ---> * We need to determine whether the intention is to open a new task or apply the background to the foreground. * if you want to bring the application to the foreground to directly end the Activity, then the Activity displayed is the previously minimized Activity. * The intention of clicking the icon will place the newly started Activity at the top, and the Activity below the top will be the previously minimized Activity. * When the newly started Activity is ended, the previously minimized Activity can be displayed. **/public class MainActivity extends Activity {@ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); if (getIntent (). getFlag S () & Intent. FLAG_ACTIVITY_BROUGHT_TO_FRONT )! = 0) {finish (); return;} setContentView (R. layout. main) ;}@ Overrideprotected void onStart () {super. onStart (); System. out. println ("---> onStart ()") ;}@ Overrideprotected void onResume () {super. onResume (); System. out. println ("---> onResume ()");}}

Main. xml is as follows: