Android Studio编写的简单数字时钟

Android Studio 3.2.1编写的简单数字时钟（用子线程发送消息到主线程的方式实现，有丰富的注释，方便理解）。

/* AUTO-GENERATED FILE.  DO NOT MODIFY.
 *
 * This class was automatically generated by the
 * gradle plugin from the resource data it found. It
 * should not be modified by hand.
 */
package android.support.constraint;

public final class R {
    private R（） {}

    public static final class attr {
        private attr（） {}

        public static final int barrierAllowsGoneWidgets = 0x7f010000;
        public static final int barrierDirection = 0x7f010001;
        public static final int chainUseRtl = 0x7f010002;
        public static final int constraintSet = 0x7f010003;
        public static final int constraint_referenced_ids = 0x7f010004;
        public static final int content = 0x7f010005;
        public static final int emptyVisibility = 0x7f010006;
        public static final int layout_constrainedHeight = 0x7f010007;
        public static final int layout_constrainedWidth = 0x7f010008;
        public static final int layout_constraintbaseline_creator = 0x7f010009;
        public static final int layout_constraintbaseline_tobaselineOf = 0x7f01000a;
        public static final int layout_constraintBottom_creator = 0x7f01000b;
        public static final int layout_constraintBottom_toBottomOf = 0x7f01000c;
        public static final int layout_constraintBottom_toTopOf = 0x7f01000d;
        public static final int layout_constraintCircle = 0x7f01000e;
        public static final int layout_constraintCircleAngle = 0x7f01000f;
        public static final int layout_constraintCircleRadius = 0x7f010010;
        public static final int layout_constraintDimensionRatio = 0x7f010011;
        public static final int layout_constraintEnd_toEndOf = 0x7f010012;
        public static final int layout_constraintEnd_toStartOf = 0x7f010013;
        public static final int layout_constraintGuide_begin = 0x7f010014;
        public static final int layout_constraintGuide_end = 0x7f010015;
        public static final int layout_constraintGuide_percent = 0x7f010016;
        public static final int layout_constraintHeight_default = 0x7f010017;
        public static final int layout_constraintHeight_max = 0x7f010018;
        public static final int layout_constraintHeight_min = 0x7f010019;
        public static final int layout_constraintHeight_percent = 0x7f01001a;
        public static final int layout_constraintHorizontal_bias = 0x7f01001b;
        public static final int layout_constraintHorizontal_chainstyle = 0x7f01001c;
        public static final int layout_constraintHorizontal_weight = 0x7f01001d;
        public static final int layout_constraintLeft_creator = 0x7f01001e;
        public static final int layout_constraintLeft_toLeftOf = 0x7f01001f;
        public static final int layout_constraintLeft_toRightOf = 0x7f010020;
        public static final int layout_constraintRight_creator = 0x7f010021;
        public static final int layout_constraintRight_toLeftOf = 0x7f010022;
        public static final i

 属性            大小     日期    时间   名称
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     文件        187  2018-11-08 16:31  数字时钟_20181108\Demo_Clock\.gitignore

     文件          1  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\fileChanges\last-build.bin

     文件         17  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\fileContent\fileContent.lock

     文件      26797  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\fileHashes\fileHashes.bin

     文件         17  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\fileHashes\fileHashes.lock

     文件      18701  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\fileHashes\resourceHashesCache.bin

     文件      48534  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\javaCompile\classAnalysis.bin

     文件      30015  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\javaCompile\jarAnalysis.bin

     文件         17  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\javaCompile\javaCompile.lock

     文件      24115  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\javaCompile\taskHistory.bin

     文件      18893  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\javaCompile\taskJars.bin

     文件      90481  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\taskHistory\taskHistory.bin

     文件         17  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\4.6\taskHistory\taskHistory.lock

     文件         17  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\buildOutputCleanup\buildOutputCleanup.lock

     文件         51  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.gradle\buildOutputCleanup\cache.properties

     文件      20693  2018-11-08 16:51  数字时钟_20181108\Demo_Clock\.gradle\buildOutputCleanup\outputFiles.bin

     文件          0  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.gradle\vcsWorkingDirs\gc.properties

     文件        545  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\caches\build_file_checksums.ser

     文件       1803  2018-11-08 16:31  数字时钟_20181108\Demo_Clock\.idea\codestyles\Project.xml

     文件        626  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\gradle.xml

     文件        509  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_android_support_constraint_constraint_layout_1_1_3.xml

     文件        433  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_android_support_constraint_constraint_layout_solver_1_1_3_jar.xml

     文件        617  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_android_support_support_annotations_27_1_1_jar.xml

     文件        718  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_android_support_test_espresso_espresso_core_3_0_2.xml

     文件        773  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_android_support_test_espresso_espresso_idling_resource_3_0_2.xml

     文件        670  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_android_support_test_monitor_1_0_2.xml

     文件        665  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_android_support_test_runner_1_0_2.xml

     文件        367  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_google_code_findbugs_jsr305_2_0_1_jar.xml

     文件        546  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__com_squareup_javawriter_2_1_1_jar.xml

     文件        536  2018-11-08 16:32  数字时钟_20181108\Demo_Clock\.idea\libraries\Gradle__javax_inject_javax_inject_1_jar.xml

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