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Can anyone tell me what is wrong with this? App crashes if user input is left blank. I was hoping it would display toast and wait for input. EditText userWireInput = (EditText) findViewById(R.id.WireSizeInputET); String userWireData = userWireInput.getText().toString(); double userWire = Double.parseDouble(userWireData); if (userWire == 0) { Toast.makeText(ISOM_Int_Results.this, "ENTER WIRE SIZE", … 
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I have a series of activities the last of which holds results. I have 'Send to Printer' button which needs to send these results to a wireless printer. Can anyone give me an example of doing this? I''ve trawled the web but there seems to be very little on this …
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I have an SQLite3 database which has 8 tables and in which data will not change so needs no add option. Each table has 4 or 5 fields of different types. In order to use this data in an Android app I need to load it into spinners. My questions … 
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Why can't I use || or && with double as in sample below? if (((mDiameter = 1 || mDiameter = 1.2) && mPitch = 0.25) || (mDiameter = 1.6 && mPitch = 0.35) || (mDiameter = 2 && mPitch = 0.4) || (mDiameter = 2.5 && mPitch = 0.45) || …
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The code below works ok and displays result (mDisplayNominalEff) to screen but I want to round the result to 3 places. I assume that I need to parse string to double. Any ideas on how to do this? String mDisplayNominalEff = ("" + (myDiameter - (myPitch * 0.649519))); TextView displayNominalEff …
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I have 4 textviews which take their values from dropdown list (spinner) selected at previous screen. There can be either 2 or 4 numbers/letters as result of this selection. The first position will always be a number and the second position will always be a letter. The third position can …
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I've managed (over a very long time) to write a program in VB using Visual Studio 2008. This program is now published to my website and works well. Probably because people shy away from downloading and running .exe files or due to lack of my understanding of search engines, I … 
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I have written a program using Visual Basic within Visual Studio 2008 which occasionally needs to load data from two MS Access database files into datatables for selection purposes. This all works perfectly on the built 'release' version but when I publish to Public_HTML via CPanel to my website and …
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I have two items which can be selected from two seperate comboboxes. I need to populate a 3rd combobox with range calculated from selection of first two. Default for this 3rd box must be 0 with plus and minus range. A little help would be much appreciated.
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Why does textbox text appear faded when 'enable' propery is set to false?
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When selecting from DataGridView as program line below: Diameter = DesignationsDataGridView.Rows(e.RowIndex).Cells(0).Value I get following exception message box:- System.ArgumentOutOfRangeException was unhandled Message="Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" If I select 'continue' from message box then I return to …
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I have a form which contains a datagridview and 2 textboxes. I have managed to populate the 2 textboxes as required by click of relevant row in datagridview. With the same click I also open another form which also contains 2 textboxes of the same name and these require the …
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I have 2 forms. One is a typed list having 3 controls (fields) loaded from access database (copied to project as part of .xsd). The values in this list represent recommended values of items and will also be applied to another 3rd form eventually. In the 2nd form there are … 
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