- #Android studio 3.0.1 constraintlayout how to
- #Android studio 3.0.1 constraintlayout install
- #Android studio 3.0.1 constraintlayout for android
- #Android studio 3.0.1 constraintlayout android
- #Android studio 3.0.1 constraintlayout code
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#Android studio 3.0.1 constraintlayout android
#Android studio 3.0.1 constraintlayout install
#Android studio 3.0.1 constraintlayout for android
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#Android studio 3.0.1 constraintlayout code
Comments are added inside the code to understand the code in more detail. Below is the code for the MainActivity.java file. To display stored in sum we have to use setText() as follows: tText(final_sum.toString())įinal_sum stores the sum and it’s necessary to convert it to string(.toString()). store the added value in another variable. Now store the number in int form and apply addition. Here s11 stores the number entered in textbox 1.We have to do the same with another Textbox(e2).
Here we have used TextView because we only have to display text avoiding it being user-changeable. Now we have to input numbers in form of string using the getText() function. The input statement will be "String s11=e1.getText().toString() "
Here num1 is id for textbox and we are just giving a variable name ‘e1’ to text box with id ‘num1’. Similarly, we have to use the same statement for the second textbox with the variable name ‘e2’. For the third text box, we have used "TextView t1=(TextView) findViewById(R.id.result) " Open the MainActivity.java file there within the class, make a method named doSum(View v). In this method, first of all, we have to link two EditText with variables so that we can use them for our input. So link those edit box with variables we have written "EditText e1=(EditText )findViewById(R.id.num1) " Step 3: Working with the MainActivity.java file
#Android studio 3.0.1 constraintlayout how to