In order to add firebase-database to your application, you also need to add the firebase-core libraries (which you commented out). app/build.gradle dependencies { // … implementation ‘com.google.firebase:firebase-core:16.0.6′ } If you haven’t done so, you also need to add rules to include Google services and Google’s Maven repository. Please read Add Firebase to Your Android Project … Read more
Lets assume that you have a String in Operation.class that has some value in it which you want to assign to the Text view in MainActivity. Make sure that variable is public. public String text1 = “this is text for textview”; Now the string above is in Operations.class and you can access the value of … Read more
add two EditText for getting two numbers then add four button for different operation like add/sub/mul/div. Get value of editText and Set onClickListener and write appropriate code in that. EditText firstNumber; EditText secondNumber; TextView addResult; Button btnAdd; double num1,num2,sum; firstNumber = (EditText)findViewById(R.id.txtNumber1); secondNumber = (EditText)findViewById(R.id.txtNumber2); addResult = (TextView)findViewById(R.id.txtResult); btnAdd = (Button)findViewById(R.id.btnAdd); btnAdd.setOnClickListener(new OnClickListener() { public … Read more
@ Stephanie-JK when you create a new project i think you have select a BASE Activity hence arrive this problem. Next time when you create a new project please select a Empty Activity then its generate a only one Layout and your problem resolve..thanks 9 solved I only created a blank activity and the app … Read more
How to get text from edittext? initialize edittext: EditText editText = findViewById(R.id.edittext); String[] editTextValues = edittext.getText().toString().split(” “); now use editTextValues like this int firstValue = Integer.parse(editTextValues[0]); int secondValue = Integer.parse(editTextValues[1]); int sum = firstValue + secondValue; solved How make addition of two or more numbers in a single EditText?
Finally I solved it by: removing: minSdkVersion 15 targetSdkVersion 28 from gradle. and adding : <uses-sdk android:minSdkVersion=”15″ android:targetSdkVersion=”26″ /> to manifest! It seems slideme.org isn’t up to date… solved Why does AndroidManifest.xml have invalid targetSdkVersion?
Problem is you are setting wrong layout in your UserLogin Activity. You are setting activity_main.xml instead you need to set your UserLogin Activity layout XML file . You are doing like this setContentView(R.layout.activity_main); Instead you need to do like setContentView(R.layout.YOUR_USER_LOGIN_ACTIVITY_LAYOUT); 8 solved Intent throwing error in click listener in Android Studio
Introduction When developing an Android application, it is common to encounter errors related to intent throwing in the click listener. This can be a frustrating experience, as it can be difficult to identify the source of the error and how to fix it. Fortunately, there are a few steps that can be taken to troubleshoot … Read more
Those are identifiers stored in R file. So whenever you create an identifier in XML (let’s call it your_id) – you should address it like R.id.your_id. But it seems that you’d better read a little bit more of theory- Google has a really good set of guides 2 solved How can i link these 10 … Read more
What about take a look to official doc? https://developer.android.com/guide/topics/ui/declaring-layout.html Maybe if you are specificest… solved How to make this type of Activity Layout in My Android App?
Try making new drawable folders for putting images after right clicking res folder and name folders like this drawable-hdpi drawable-mdpi drawable-xhdpi drawable-xxhdpi drawable-xxxhdpi Drag and drop image with same name according to their dimensions. The android takes drawable folder as one entity, picks up the best suited image and shows it on different resolution phones. … Read more
When you bring your cursor down to Windows task bar, Android studio will automatically scroll up this window. Hence button will be visible and accessible. 4 solved Android Studio can’t create new activity
This is the sample app of this library. you can view its code too here. If you are using Android studio then add this library in ‘build.gradle‘ file, like this dependencies { // Your other dependencies… compile ‘net.frakbot:glowpadbackport:2.1.1’ } 4 solved How do i use this library along with its sample? [closed]
If you insist on shared preference use this code : To save the data private void saveSp(String key , String value){ PreferenceManager.getDefaultSharedPreferences(Context) .edit() .putString(key, value).apply(); } To get your data: PreferenceManager.getDefaultSharedPreferences(Context).getString(“string”, “default”) solved How to use shared preference to send data from activity to fragment?
Use replace() of String example to demonstrate using String.replace(), and this does not cover your entire Story! public class Test { public static void main(String[] args) { String story = “Hello, I am strHost and I will be accompanied today by strHost1 and strHost2. As we walk through the mansion today, feel free to ask … Read more