1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package android.annotation; 17 18 import java.lang.annotation.Retention; 19 import java.lang.annotation.Target; 20 21 import static java.lang.annotation.ElementType.FIELD; 22 import static java.lang.annotation.ElementType.LOCAL_VARIABLE; 23 import static java.lang.annotation.ElementType.METHOD; 24 import static java.lang.annotation.ElementType.PARAMETER; 25 import static java.lang.annotation.RetentionPolicy.SOURCE; 26 27 /** 28 * Denotes that the annotated element should be a float or double in the given range 29 * <p> 30 * Example: 31 * <pre><code> 32 * @FloatRange(from=0.0,to=1.0) 33 * public float getAlpha() { 34 * ... 35 * } 36 * </code></pre> 37 * 38 * @hide 39 */ 40 @Retention(SOURCE) 41 @Target({METHOD,PARAMETER,FIELD,LOCAL_VARIABLE}) 42 public @interface FloatRange { 43 /** Smallest value. Whether it is inclusive or not is determined 44 * by {@link #fromInclusive} */ 45 double from() default Double.NEGATIVE_INFINITY; 46 /** Largest value. Whether it is inclusive or not is determined 47 * by {@link #toInclusive} */ 48 double to() default Double.POSITIVE_INFINITY; 49 50 /** Whether the from value is included in the range */ 51 boolean fromInclusive() default true; 52 53 /** Whether the to value is included in the range */ 54 boolean toInclusive() default true; 55 }
