Source code
package android.support.v4.view;
import android.util.Log;
import android.view.View;
import android.view.ViewParent;
class ViewParentCompatLollipop {
private static final String TAG = "ViewParentCompat";
ViewParentCompatLollipop() {
}
public static boolean onStartNestedScroll(ViewParent parent, View child, View target, int nestedScrollAxes) {
try {
return parent.onStartNestedScroll(child, target, nestedScrollAxes);
} catch (AbstractMethodError e) {
Log.e(TAG, "ViewParent " + parent + " does not implement interface " + "method onStartNestedScroll", e);
return false;
}
}
public static void onNestedScrollAccepted(ViewParent parent, View child, View target, int nestedScrollAxes) {
try {
parent.onNestedScrollAccepted(child, target, nestedScrollAxes);
} catch (AbstractMethodError e) {
Log.e(TAG, "ViewParent " + parent + " does not implement interface " + "method onNestedScrollAccepted", e);
}
}
public static void onStopNestedScroll(ViewParent parent, View target) {
try {
parent.onStopNestedScroll(target);
} catch (AbstractMethodError e) {
Log.e(TAG, "ViewParent " + parent + " does not implement interface " + "method onStopNestedScroll", e);
}
}
public static void onNestedScroll(ViewParent parent, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
try {
parent.onNestedScroll(target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
} catch (AbstractMethodError e) {
Log.e(TAG, "ViewParent " + parent + " does not implement interface " + "method onNestedScroll", e);
}
}
public static void onNestedPreScroll(ViewParent parent, View target, int dx, int dy, int[] consumed) {
try {
parent.onNestedPreScroll(target, dx, dy, consumed);
} catch (AbstractMethodError e) {
Log.e(TAG, "ViewParent " + parent + " does not implement interface " + "method onNestedPreScroll", e);
}
}
public static boolean onNestedFling(ViewParent parent, View target, float velocityX, float velocityY, boolean consumed) {
try {
return parent.onNestedFling(target, velocityX, velocityY, consumed);
} catch (AbstractMethodError e) {
Log.e(TAG, "ViewParent " + parent + " does not implement interface " + "method onNestedFling", e);
return false;
}
}
public static boolean onNestedPreFling(ViewParent parent, View target, float velocityX, float velocityY) {
try {
return parent.onNestedPreFling(target, velocityX, velocityY);
} catch (AbstractMethodError e) {
Log.e(TAG, "ViewParent " + parent + " does not implement interface " + "method onNestedPreFling", e);
return false;
}
}
}