CODEWITHSUNDEEP
android
Akeshwar Jha
Akeshwar Jha

Reputation: 4576

getLayoutParams.width vs getWidth()

I have the following view:

<View
        android:id="@+id/divider"
        android:layout_height="2dp"
        android:background="#ffffff"
        android:layout_below="@+id/timer"
        android:layout_width="wrap_content" />

I'm implementing a timer in my project. So, the function onTick() is called every second:

public void onTick(long millisUntilFinished) {
            secsPassed++;
            minsPassed = (secsPassed-1)/60;
            View dividerWhite = findViewById(R.id.dividerWhite);
            View divider = findViewById(R.id.divider);
            Log.i("divider.getWdith() = ", divider.getWidth()-secsPassed + "");
            Log.i("layout width ", divider.getLayoutParams().width + " ");
        //further code to implement a timer

The problem is, I'm getting -1 for divider.getLayoutParams().width while the value of divider.getWidth() is correct (i.e., the seconds remaining)

I need to dynamically change the width of the view as the seconds pass. divider.setLayoutParams().width is a good option to do that. But, it's not changing the layout width, which still remains -1

Upvotes: 2

Views: 1963

Answers (2)

JiTHiN
JiTHiN

Reputation: 6588

getLayoutParams().width returns -1 when the width is MATCH_PARENT. getLayoutParams().width can be FILL_PARENT (replaced by MATCH_PARENT, in API Level 8) or WRAP_CONTENT or an exact size. But getWidth() always returns the width in pixels.

Upvotes: 5

Chintan Rathod
Chintan Rathod

Reputation: 26034

Try using following code.

int widthSpec = View.MeasureSpec.makeMeasureSpec(View.MeasureSpec.UNSPECIFIED,
        View.MeasureSpec.UNSPECIFIED);
viewObject.measure(widthSpec, widthSpec);

int height = viewObject.getMeasuredHeight();
int width = viewObject.getMeasuredWidth();

Upvotes: 0

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