android studio自定义标题栏，可自定义回退按钮事件

android studio 自定义标题栏，自定义回退按钮事件，自定义右侧显示文字还是图片，自定义右侧点击事件

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

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean（“true“）;
  public static final String APPLICATION_ID = “com.myapplication.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
----------- ---------  ---------- -----  ----
     目录           0  2017-10-20 15:25  MyApplication\
     文件         127  2017-10-20 15:25  MyApplication\.gitignore
     目录           0  2017-10-20 15:25  MyApplication\.gradle\
     目录           0  2017-10-20 15:32  MyApplication\.gradle\3.3\
     目录           0  2017-10-20 15:25  MyApplication\.gradle\3.3\taskArtifacts\
     文件      136833  2017-10-20 15:43  MyApplication\.gradle\3.3\taskArtifacts\fileHashes.bin
     文件     1035232  2017-10-20 15:43  MyApplication\.gradle\3.3\taskArtifacts\fileSnapshots.bin
     文件       70711  2017-10-20 15:43  MyApplication\.gradle\3.3\taskArtifacts\taskArtifacts.bin
     文件          17  2017-10-20 15:43  MyApplication\.gradle\3.3\taskArtifacts\taskArtifacts.lock
     目录           0  2017-10-20 15:32  MyApplication\.gradle\3.3\tasks\
     目录           0  2017-10-20 15:32  MyApplication\.gradle\3.3\tasks\_app_compileDebugJavaWithJavac\
     目录           0  2017-10-20 15:32  MyApplication\.gradle\3.3\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\
     文件       32811  2017-10-20 15:43  MyApplication\.gradle\3.3\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.bin
     文件          17  2017-10-20 15:43  MyApplication\.gradle\3.3\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.lock
     目录           0  2017-10-20 15:32  MyApplication\.gradle\3.3\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\
     文件       20005  2017-10-20 15:43  MyApplication\.gradle\3.3\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.bin
     文件          17  2017-10-20 15:43  MyApplication\.gradle\3.3\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.lock
     目录           0  2017-10-20 16:00  MyApplication\.idea\
     文件         686  2017-10-20 15:25  MyApplication\.idea\compiler.xml
     目录           0  2017-10-20 15:25  MyApplication\.idea\copyright\
     文件          76  2017-10-20 15:25  MyApplication\.idea\copyright\profiles_settings.xml
     文件         626  2017-10-20 15:25  MyApplication\.idea\gradle.xml
     目录           0  2017-10-20 15:25  MyApplication\.idea\libraries\
     文件         601  2017-10-20 15:25  MyApplication\.idea\libraries\animated_vector_drawable_25_3_1.xml
     文件         565  2017-10-20 15:25  MyApplication\.idea\libraries\appcompat_v7_25_3_1.xml
     文件         417  2017-10-20 15:25  MyApplication\.idea\libraries\constraint_layout_1_0_0_alpha9.xml
     文件         358  2017-10-20 15:25  MyApplication\.idea\libraries\constraint_layout_solver_1_0_0_alpha9.xml
     文件         579  2017-10-20 15:25  MyApplication\.idea\libraries\espresso_core_2_2_2.xml
     文件         612  2017-10-20 15:25  MyApplication\.idea\libraries\espresso_idling_resource_2_2_2.xml
     文件         630  2017-10-20 15:25  MyApplication\.idea\libraries\exposed_instrumentation_api_publish_0_5.xml
     文件         526  2017-10-20 15:25  MyApplication\.idea\libraries\hamcrest_core_1_3.xml
............此处省略1127个文件信息