What is the prob with using Bundle extra to string?

Question

Here is my code.

In the MainActivity.java, I called this method.

public void doViewRecord(View v){
    startActivity(new Intent(this, ActivityView.class));
}

And in the SecondActivity (ActivityView.java).

[This is where I get my error]

tv_id = findViewById(R.id.tvId);
    tv_name = findViewById(R.id.tvName);
    tv_course = findViewById(R.id.tvCourse);

    try{
        extra = getIntent().getExtras();
        id = extra.getString("id");
        tv_id.setText(id);
    }catch (Exception e){
        e.printStackTrace();
        displayError(e.getMessage());
    }

The error I get is this.

Error Message

I already tried the intent then bundle, but still it gives me an error.

Your intent has no extras. Please show a [mcve] of the code that starts that Activity — OneCricketeer, Nov 09 '17 at 14:21
`getIntent().getExtras()` returned null, which only happens when you've not put any extras in that Intent — OneCricketeer, Nov 09 '17 at 14:23
The second block of code here is unrelated to the error... You should show where you called `startActivity` before the first block — OneCricketeer, Nov 09 '17 at 14:24
See [What is a NullPointerException, and how do I fix it?](https://stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-do-i-fix-it) — Haem, Nov 09 '17 at 14:43

score 1 · Answer 1 · answered Nov 09 '17 at 14:39

1

You have to put the string early on the intent

public void doViewRecord(View v){
    Intent intent = new Intent(this, ActivityView.class);
    intent.putExtra("id", "your-id");
    startActivity(intent);
}

answered Nov 09 '17 at 14:39

Marcos Vasconcelos

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What is the prob with using Bundle extra to string?

1 Answers1