CODEWITHSUNDEEP
androidlayoutlistenerandroid-softkeyboard
Eichhörnchen
Eichhörnchen

Reputation: 592

Android - Global Layout Listener not working

I used the code from Reuben Scratton's new answer in this question. When I paste it into my code, I get red squigglies underneath addOnGlobalLayoutListener(new OnGlobalLayoutListener(), onGlobalLayout(), and activityRootView (after heightDiff). Please help me figure out what is wrong.

Thanks Here's my code on the .java page

public class Details extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.activity_details);
    Intent intent = getIntent();        
}


final View activityRootView = findViewById(R.id.details);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

    @Override
    public void onGlobalLayout() {
        int heightDiff = activityRootView.getRootView().getHeight() - activityRootView.getHeight();
        if (heightDiff > 100) { // if more than 100 pixels, its probably a keyboard...
            ImageButton backButton = (ImageButton)findViewById(R.id.back); 
            backButton.setImageResource(R.drawable.hide_keyboard);
        }
     }
});

Upvotes: 6

Views: 29991

Answers (1)

Sam
Sam

Reputation: 86948

You need to add that code inside a method, like onCreate().

public class Details extends Activity {
    View activityRootView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_details);
        Intent intent = getIntent();        

        activityRootView = findViewById(R.id.details);    
        activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                int heightDiff = activityRootView.getRootView().getHeight() - activityRootView.getHeight();
                if (heightDiff > 100) { // if more than 100 pixels, its probably a keyboard...
                    ImageButton backButton = (ImageButton)findViewById(R.id.back); 
                    backButton.setImageResource(R.drawable.hide_keyboard);
                }
             }
        });
    }
}

Upvotes: 19

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