How do I fetch specific data from a page and display that data in a TextView

Question

I'm trying to make an Android app that logs into my University's student webpage in the background and gathers specific data like class timings for my next class and then displays it in a TextView in the App. How do I achieve this?

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score 1 · Answer 1 · answered Mar 01 '18 at 04:19

There are so many ways to share data from one activity to another.Here I described two of them.

1. Declare static variable because

Static variables are initialized only once, at the start of the execution. These variables will be initialized first, before the initialization of any instance variables. A single copy to be shared by all instances of the class. A static variable can be accessed directly by the class name and doesn't need any object.

For Example: In First Activity

EditText edit;
static String sample;
//Code
edit = (EditText) findViewById(R.id.edt_txt);
sample=edit.getText().toString();

In Second Activity

TextView txt;

txt = (TextView) findViewById(R.id.txt);
txt.setText(First_Activity.sample);

2.Second Method is using putExtra() and getExtra()

In First Activity

    EditText edit;
    String sample;
    //Code
    edit = (EditText) findViewById(R.id.edt_txt);
    sample=edit.getText().toString();
    Intent i=new Intent(this,Second_Activity.class);
    i.putExtra("text",sample);

In second Activity get these values:

 TextView txt;
    String test;
    txt = (TextView) findViewById(R.id.txt);
    Intent i=getIntent().getExtra();
    test=i.getString("text");
    txt.setText(test);

Read these for more information

https://www.androidhive.info/2011/08/how-to-switch-between-activities-in-android/

How to use putExtra() and getExtra() for string data

Hope this one will be helpful.

How do I fetch specific data from a page and display that data in a TextView

1 Answers1