设备进入睡眠状态后清理主 Activity

Question

实际上，我已经开发了我的 Android 应用程序版本 10(2.33)，但我发现了一个问题，当我在移动设备上运行该应用程序时它工作正常，但一段时间后移动设备进入睡眠模式并且当我启用或解锁设备然后观察到，由用户填充的应用程序显示内容被清除，并且当设备方向改变时内容恢复。先生，请在这方面帮助我，谢谢。我还绑定了 onCretae 方法的源代码。

@覆盖 公共无效 onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); 试试{

    setContentView(R.layout.main);
    ListView lstMain = (ListView) findViewById(R.id.lstMain);
    btnSetting =(Button)findViewById(R.id.btnSetting);
    btnCheck = (Button)findViewById(R.id.btnCheckStatus);
    btnabout = (Button)findViewById(R.id.btnabout);
    imgUserAdmin = (ImageView)findViewById(R.id.imgUserAdmin);
    btnCheck.setOnClickListener(buttonhandler);
    btnSetting.setOnClickListener(buttonhandler);
    btnExit = (Button)findViewById(R.id.btnExit);
    btnLocation = (Button)findViewById(R.id.btnAddSelLocation);
    btnLocation.setOnClickListener(buttonhandler);
    btnExit.setOnClickListener(buttonhandler);        
    startService(new Intent(this,SmsService.class));
    IntentFilter filter = new IntentFilter(ConstantClass.SMS_RECEIVED);
    registerReceiver(smsSend.sms_send,smsSend.getSentIntentFilter());
    registerReceiver(smsSend.sms_delivered,smsSend.getDeliveredFilter());
    registerReceiver(receivedSms,filter);
   lstMain.setOnItemClickListener(lstMainClick);

    dba.Open();
    String str = "SELECT " + DataBaseAdapter.Key_UserID + " FROM " + ConstantClass.dbName[0] + " WHERE " +
    DataBaseAdapter.Key_MBID + " = ?";
     id = dba.CurrentWorkingCoordinator(DataBaseAdapter.Key_SendCoord, 1);
     if(!Integer.toString(id).equals(ConstantClass.isCrdDiffer))
         ConstantClass.isAuditrequestSend=true;
     if(ConstantClass.isAuditrequestSend==false)
        btnCheck.setText("Checking..");
    String c = null;
    if(id!=0){
    Cursor admin =dba.ExecuteSelect(str, id);
    if (admin!=null)
        admin.moveToFirst();
    if(admin.getCount()>0){
         c = admin.getString(admin.getColumnIndex(DataBaseAdapter.Key_UserID));
        if(c.equals("A")){
            ConstantClass.has_authority = "A";
            imgUserAdmin.setImageResource(R.drawable.admin);
        }else
        imgUserAdmin.setImageResource(R.drawable.admingreen);
    }
    if(ConstantClass.SelectCord.equals("All")){
        btnCheck.setEnabled(false);
        btnSetting.setEnabled(false);
        String dev="000000";
        curMain = dba.SelectDeviceOnId(DataBaseAdapter.Key_DevID, dev);
        /*cursor = dba.getCoord(1);
        if (cursor.getCount()>0){
            cursor.moveToFirst();
            ConstantClass.address = cursor.getString(cursor.getColumnIndex(DataBaseAdapter.Key_MbNo)).toString();
        }*/
        startManagingCursor(curMain);
        if(curMain.getCount()>0){
            curMain.moveToFirst();
            adpt = new customCursorAdapter(this,curMain);  
            lstMain.setAdapter(adpt);           
        }

    }else{
    curMain = dba.SelFromDeviceStorage(DataBaseAdapter.Key_DevCoordId,id); 
    cursor = dba.getCoord(1);
    if (cursor.getCount()>0){
        cursor.moveToFirst();
        ConstantClass.address = cursor.getString(cursor.getColumnIndex(DataBaseAdapter.Key_MbNo)).toString();
    }
    startManagingCursor(curMain);
    if(curMain.getCount()>0){
        curMain.moveToFirst();
        adpt = new customCursorAdapter(this,curMain);  
        lstMain.setAdapter(adpt);           
            }
        }
    }
    }catch(Exception ex){
        dlg = new ExceptionDialog(this,"Zigbee Activity",ex.getMessage());
        dlg.show();
    }


}

Answer 1

将此行添加到清单中的活动中。

android:configChanges="orientation">

另请阅读 Greg 的链接：-p