Source code
package android.support.v7.internal.widget;
import android.graphics.Rect;
import android.os.Build.VERSION;
import android.support.v4.view.ViewCompat;
import android.util.Log;
import android.view.View;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class ViewUtils {
private static final String TAG = "ViewUtils";
private static Method sComputeFitSystemWindowsMethod;
static {
if (VERSION.SDK_INT >= 18) {
try {
sComputeFitSystemWindowsMethod = View.class.getDeclaredMethod("computeFitSystemWindows", new Class[]{Rect.class, Rect.class});
if (!sComputeFitSystemWindowsMethod.isAccessible()) {
sComputeFitSystemWindowsMethod.setAccessible(true);
}
} catch (NoSuchMethodException e) {
Log.d(TAG, "Could not find method computeFitSystemWindows. Oh well.");
}
}
}
private ViewUtils() {
}
public static boolean isLayoutRtl(View view) {
return ViewCompat.getLayoutDirection(view) == 1;
}
public static int combineMeasuredStates(int curState, int newState) {
return curState | newState;
}
public static void computeFitSystemWindows(View view, Rect inoutInsets, Rect outLocalInsets) {
if (sComputeFitSystemWindowsMethod != null) {
try {
sComputeFitSystemWindowsMethod.invoke(view, new Object[]{inoutInsets, outLocalInsets});
} catch (Exception e) {
Log.d(TAG, "Could not invoke computeFitSystemWindows", e);
}
}
}
public static void makeOptionalFitsSystemWindows(View view) {
if (VERSION.SDK_INT >= 16) {
try {
Method method = view.getClass().getMethod("makeOptionalFitsSystemWindows", new Class[0]);
if (!method.isAccessible()) {
method.setAccessible(true);
}
method.invoke(view, new Object[0]);
} catch (NoSuchMethodException e) {
Log.d(TAG, "Could not find method makeOptionalFitsSystemWindows. Oh well...");
} catch (InvocationTargetException e2) {
Log.d(TAG, "Could not invoke makeOptionalFitsSystemWindows", e2);
} catch (IllegalAccessException e3) {
Log.d(TAG, "Could not invoke makeOptionalFitsSystemWindows", e3);
}
}
}
}