How to create an android app : Build an android app Using Android Studio

STEP #1: Open activity_main.xml tab if it is not already .

STEP #2: open Design tab the activity_main.xml display if it is not open.

STEP #3: Click and drag the “Hello, world!” from the upper left corner of the phone display to the center of the screen.

STEP #4: Now you have to open the values folder, which you can see In the project file system on the left side of the window

STEP #5: Now Go to > values, and open the strings.xml file by double tapping it.

STEP #6: Now you have to find “Hello world!“.

STEP #7: After the “Hello world!” message, add “Welcome to my app!”

STEP #8: Navigate back to the activity_main.xml tab.

STEP #9: Make sure that your centered text now reads “Hello world! Welcome to my app!”

STEP #1: Now Go to > Design tab, which is in the activity_main.xml display.

STEP #2: In the Palette menu to the left of the phone display, find Button (under the heading Widgets).

STEP #3: Now tap and drag Button below your welcome message.

STEP #4: Make sure your button is still selected.

STEP #5: In the Properties menu (on the right side of the window), scroll down to find the field for “text.”

STEP #6: Change the text from “New Button” to “Next Page.”

How to create an android app : Build an android app Using Android Studio?

STEP #1: At the top of the project’s file system tree, right click on “app.”

STEP #2: Navigate through to New > Activity > Blank Activity.

STEP #3: Change the name of this activity to “SecondActivity”.

STEP #4: Click “Finish.”

STEP #5: Make sure you are in the Design view of activity_second.xml.

STEP #6: Drag the text box in the upper left of the phone display down to the center as you did on the Main Activity.

STEP #7: With the text box still selected, find the “id” field in the Properties menu on the right, and set it to “text2”.

STEP #8: Open strings.xml again.

STEP #9: Add a new line under “Hello world! Welcome to my app!” that reads “Welcome to the second page!”.

STEP #10: Navigate back to activity_second.xml.

STEP #11: Select the text box again.

STEP #12: In the Properties pane, set the “text” field to “@string/second_page”.

STEP #13: Make sure that the text box now reads “Welcome to the second page!” and is in the center of the screen in the phone display.

How to create an android app : Build an android app Using Android Studio?

1. Select the MainActivity.java tab along the top of the work environment.

2. Add the following lines of code at the end of the onCreate method:

Button button = (Button) findViewById(R.id.button);

button.setOnClickListener(new View.onClickListener() {

@Override

public void onClick(View v) {

goToSecondActivity();

}

});

3. Add the following method to the bottom of the MainActivity class:

private void goToSecondActivity() {

Intent intent = new Intent(this, SecondActivity.class);

startActivity(intent);

}

4. Click the + next to import at the third line of MainActivity.java to expand the import statements.

5. Add the following to the end of the import statements if they are not already there:

import android.content.Intent;

import android.view.View;

import android.widget.TextView;

STEP #1: Click the green play symbol from the toolbar at the top of the Android Studio window.

STEP #2: When the “Choose Device” dialog apperas (this may take a few moments), select the “Lauch emulator” option.

STEP #3: Click OK.

STEP #4: When the emulator opens (this too could take awhile), the app will automatically launch the app upon the virtual phone being unlocked.

STEP #5: Make sure that all of your text displays correctly and that the button takes you to the next page.

How to create an android app : Build an android app Using Android Studio?

You’ve now completed your first Android application with some basic functionality. How to create an android app : Build an android app Using Android Studio?