CODEWITHSUNDEEP
androidandroid-layoutandroid-emulatorandroid-widgettextview
Salexes
Salexes

Reputation: 187

Updating a textview in different layout xml from the MainAcivity.java?

I've created a new .xml file in my layout folder called game.xml. It contains an TextView.

Is it possible to set the text on the textview located in the game.xml from my main activity?

game.xml (Textview part)

<TextView
    android:id="@+id/tV1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/imageView1"
    android:layout_centerVertical="true"
    android:text="TextView" />

MainActivity.java

    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    setImageArray();
    String actualword = chooseWord(words);
    createLetterArray(actualword);
    TextView textView1 = (TextView) findViewById(R.id.tV1); //get a reference to the textview on the game.xml file.
    textView1.setText(actualword);

}
    ...

I tried it this way. But it doesn't work. Anyone who can help me ?

Upvotes: 0

Views: 1603

Answers (2)

codeMagic
codeMagic

Reputation: 44571

You can't set a view, TextView here, that hasn't been created by inflating the layout through an inflater or setContentView(). You can pass the value through an Intent to the class that will actually use the TextView

Intent intent = new Intent(MainActivity.this, NextActivity.class); 
intent.putExtra("key", actualword);
startActivity(intent);

Where NextActivity is the activity that will display the textview

Then you can get that value and set it in your other activity

Intent recIntent = getIntent();
String text = recIntent.getStringExtra("key");
TextView textView1 = (TextView) findViewById(R.id.tV1); //get a reference to the textview on the game.xml file.
textView1.setText(text);

After you have used setContentView(R.layout.game); in onCreate() of your second activity

Upvotes: 1

raydowe
raydowe

Reputation: 1315

Short Answer, No

The layout file is just a blueprint. The actual textview doesn't exist until the layout has been inflated (turned into the views).

My question, (how) are you're not using this game.xml? Is it in another activity?

Upvotes: 0

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