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package moe.yuuta.flow.widgets;
import android.content.Context;
import android.os.Build;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.FragmentStatePagerAdapter;
import androidx.viewpager.widget.ViewPager;
public class FlowPager extends ViewPager {
public FlowPager(@NonNull Context context) {
super(context);
}
public FlowPager(@NonNull Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
}
// Thanks to https://stackoverflow.com/a/32488566/6792243
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if(null != getAdapter()) {
int height = 0;
View child = ((FragmentStatePagerAdapter) getAdapter()).getItem(getCurrentItem()).getView();
if (child != null) {
child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
height = child.getMeasuredHeight();
// TODO: Support api-14 and api-15?
if (Build.VERSION.SDK_INT >= 16 && height < getMinimumHeight()) {
height = getMinimumHeight();
}
}
int newHeight = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
if (getLayoutParams().height != 0 && heightMeasureSpec != newHeight) {
getLayoutParams().height = height;
} else {
heightMeasureSpec = newHeight;
}
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
// Thanks to https://stackoverflow.com/a/13437997/6792243
@Override
public boolean onTouchEvent(MotionEvent event) {
return false;
}
// Thanks to https://stackoverflow.com/a/13437997/6792243
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
return false;
}
}
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