mirror of
https://github.com/material-components/material-components-android.git
synced 2026-01-22 04:54:25 +08:00
8f0aa7f8d6
Slider throws an exception when calling getValue with more than one value. Supporting both single value and multiple values in the same class makes it confusing. While not supporting convenience methods getValue and setValue in the multi value class makes it, well, inconvenient. In addition min, max are also a bit ambiguous since seekBar uses these for valueFrom and valueTo so those were removed. PiperOrigin-RevId: 311774410
108 lines
3.4 KiB
Java
108 lines
3.4 KiB
Java
/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.material.slider;
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import com.google.android.material.R;
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import android.content.Context;
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import android.content.res.TypedArray;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import android.util.AttributeSet;
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import com.google.android.material.slider.RangeSlider.OnChangeListener;
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import com.google.android.material.slider.RangeSlider.OnSliderTouchListener;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* A range slider can be used to select from either a continuous or a discrete set of values. The
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* default is to use a continuous range of values from valueFrom to valueTo.
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*
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* <p>{@inheritDoc}
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*
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* <p>{@code app:values}: <b>Optional.</b> The initial values of the range slider. If not specified,
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* the range slider will only have one value equal to {@code android:valueFrom}
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*
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* @attr ref com.google.android.material.R.styleable#RangeSlider_values
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*/
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public class RangeSlider extends BaseSlider<RangeSlider, OnChangeListener, OnSliderTouchListener> {
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public RangeSlider(@NonNull Context context) {
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this(context, null);
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}
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public RangeSlider(@NonNull Context context, @Nullable AttributeSet attrs) {
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this(context, attrs, R.attr.sliderStyle);
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}
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public RangeSlider(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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TypedArray a = context.obtainStyledAttributes(attrs, new int[] {R.attr.values});
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if (a.hasValue(0)) {
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int valuesId = a.getResourceId(0, 0);
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TypedArray values = a.getResources().obtainTypedArray(valuesId);
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setValues(convertToFloat(values));
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}
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a.recycle();
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}
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/**
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* Interface definition for a callback invoked when a slider's value is changed. This is called
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* for all existing values to check all the current values use {@see RangeSlider#getValues()}
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*/
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public interface OnChangeListener extends BaseOnChangeListener<RangeSlider> {}
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/** Interface definition for a callback invoked when a slider's value is changed. */
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public interface OnSliderTouchListener extends BaseOnSliderTouchListener<RangeSlider> {}
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/**
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* {@inheritDoc}
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*
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* @see #getValues()
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*/
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@Override
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public void setValues(@NonNull Float... values) {
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super.setValues(values);
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}
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/**
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* {@inheritDoc}
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*
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* @see #getValues()
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*/
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@Override
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public void setValues(@NonNull List<Float> values) {
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super.setValues(values);
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}
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/** Returns current values of the slider thumbs. */
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@NonNull
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@Override
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public List<Float> getValues() {
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return super.getValues();
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}
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private static List<Float> convertToFloat(TypedArray values) {
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List<Float> ret = new ArrayList<>();
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for (int i = 0; i < values.length(); ++i) {
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ret.add(values.getFloat(i, -1));
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}
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return ret;
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}
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}
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