Static variables in the Android 4.1 app are not erased even after the app exits

The static variable in the Android 4.1 app retains its last assignment even after the app exits.

 Public classMainactivityextendsActivity {PrivateTextView TV; Private Static inti=10; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);                Setcontentview (R.layout.activity_main); TV=(TextView) Findviewbyid (R.ID.TEXTVIEW1); Button Button=(Button) Findviewbyid (R.id.button1); Button.setonclicklistener (NewOnclicklistener () {@Override Public voidOnClick (View v) {i+ = 10;        }        }); Button Button2=(Button) Findviewbyid (R.id.button2); Button2.setonclicklistener (NewOnclicklistener () {@Override Public voidOnClick (View v) {Tv.settext ("I is:" +i);    }        }); }}

When the app starts for the first time, clicking Button 2 displays the initial value of I.

Click button 1, add I 10, exit the app, start the app again, click Button 2, show I The value is: 20.

Note: After the program exits, the value of I is overwritten and unrecoverable. I also will not be re-assigned at the next startup by the program recycle.

Static variables in the Android 4.1 app are not erased even after the app exits