Android入门练手计算器

Android小计算器，除实现四则运算还实现了括号乘方取余等高级运算，TextView滚动显示，输入时自动定位到最后一行，双击满屏显示，再次双击恢复。可检测表达式是否正确。更改了软件图标，app目录下有签名打包好的apk文件，可直接在Android5.0版本以上安装使用。 可供新手练手学习参考。

/**
 * Automatically generated file. DO NOT MODIFY
 */
package com.example.calculator.test;

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean（“true“）;
  public static final String APPLICATION_ID = “com.example.calculator.test“;
  public static final String BUILD_TYPE = “debug“;
  public static final String FLAVOR = ““;
  public static final int VERSION_CODE = 1;
  public static final String VERSION_NAME = “1.0“;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件         127  2018-08-24 18:35  Calculator\.gitignore
     目录           0  2018-08-24 18:36  Calculator\.gradle\
     目录           0  2018-08-24 23:46  Calculator\.gradle\2.14.1\
     目录           0  2018-08-24 18:36  Calculator\.gradle\2.14.1\taskArtifacts\
     文件          31  2018-08-24 18:36  Calculator\.gradle\2.14.1\taskArtifacts\cache.properties
     文件          17  2018-08-26 17:59  Calculator\.gradle\2.14.1\taskArtifacts\cache.properties.lock
     文件      241504  2018-08-26 17:59  Calculator\.gradle\2.14.1\taskArtifacts\fileHashes.bin
     文件     5081867  2018-08-26 17:59  Calculator\.gradle\2.14.1\taskArtifacts\fileSnapshots.bin
     文件       57102  2018-08-26 17:59  Calculator\.gradle\2.14.1\taskArtifacts\fileSnapshotsToTreeSnapshotsIndex.bin
     文件      157225  2018-08-26 17:59  Calculator\.gradle\2.14.1\taskArtifacts\taskArtifacts.bin
     目录           0  2018-08-25 21:56  Calculator\.gradle\2.14.1\tasks\
     目录           0  2018-08-24 23:46  Calculator\.gradle\2.14.1\tasks\_app_compileDebugJavaWithJavac\
     目录           0  2018-08-24 23:46  Calculator\.gradle\2.14.1\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\
     文件      117651  2018-08-26 17:44  Calculator\.gradle\2.14.1\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.bin
     文件          17  2018-08-26 17:44  Calculator\.gradle\2.14.1\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.lock
     目录           0  2018-08-24 23:46  Calculator\.gradle\2.14.1\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\
     文件       20776  2018-08-26 17:44  Calculator\.gradle\2.14.1\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.bin
     文件          17  2018-08-26 17:44  Calculator\.gradle\2.14.1\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.lock
     目录           0  2018-08-25 21:56  Calculator\.gradle\2.14.1\tasks\_app_compileReleaseJavaWithJavac\
     目录           0  2018-08-25 21:56  Calculator\.gradle\2.14.1\tasks\_app_compileReleaseJavaWithJavac\localClassSetAnalysis\
     文件       28897  2018-08-26 17:58  Calculator\.gradle\2.14.1\tasks\_app_compileReleaseJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.bin
     文件          17  2018-08-26 17:58  Calculator\.gradle\2.14.1\tasks\_app_compileReleaseJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.lock
     目录           0  2018-08-25 21:56  Calculator\.gradle\2.14.1\tasks\_app_compileReleaseJavaWithJavac\localJarClasspathSnapshot\
     文件       20776  2018-08-26 17:58  Calculator\.gradle\2.14.1\tasks\_app_compileReleaseJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.bin
     文件          17  2018-08-26 17:58  Calculator\.gradle\2.14.1\tasks\_app_compileReleaseJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.lock
     目录           0  2018-08-26 17:59  Calculator\app\
     文件           8  2018-08-24 18:35  Calculator\app\.gitignore
     文件       13248  2018-08-25 21:57  Calculator\app\app.iml
     文件     1279233  2018-08-26 17:59  Calculator\app\app-release.apk
     文件         899  2018-08-24 18:35  Calculator\app\build.gradle
     目录           0  2018-08-26 11:26  Calculator\app\build\
............此处省略3109个文件信息