实现增加、删除账单，计算总价，清空账单的功能
资源文件列表
Cost/.gitignore , 127
Cost/.gradle/2.14.1/taskArtifacts/cache.properties , 31
Cost/.gradle/2.14.1/taskArtifacts/cache.properties.lock , 17
Cost/.gradle/2.14.1/taskArtifacts/fileHashes.bin , 154186
Cost/.gradle/2.14.1/taskArtifacts/fileSnapshots.bin , 3023881
Cost/.gradle/2.14.1/taskArtifacts/fileSnapshotsToTreeSnapshotsIndex.bin , 25922
Cost/.gradle/2.14.1/taskArtifacts/taskArtifacts.bin , 101736
Cost/.gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localClassSetAnalysis/localClassSetAnalysis.bin , 48335
Cost/.gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localClassSetAnalysis/localClassSetAnalysis.lock , 17
Cost/.gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localJarClasspathSnapshot/localJarClasspathSnapshot.bin , 24893
Cost/.gradle/2.14.1/tasks/_app_compileDebugJavaWithJavac/localJarClasspathSnapshot/localJarClasspathSnapshot.lock , 17
Cost/.idea/compiler.xml , 686
Cost/.idea/copyright/profiles_settings.xml , 76
Cost/.idea/gradle.xml , 626
Cost/.idea/libraries/animated_vector_drawable_25_3_1.xml , 637
Cost/.idea/libraries/appcompat_v7_25_3_1.xml , 753
Cost/.idea/libraries/design_25_3_1.xml , 717
Cost/.idea/libraries/espresso_core_2_2_2.xml , 619
Cost/.idea/libraries/espresso_idling_resource_2_2_2.xml , 674
Cost/.idea/libraries/exposed_instrumentation_api_publish_0_5.xml , 692
Cost/.idea/libraries/hamcrest_core_1_3.xml , 526
Cost/.idea/libraries/hamcrest_integration_1_3.xml , 354
Cost/.idea/libraries/hamcrest_library_1_3.xml , 342
Cost/.idea/libraries/hellocharts_library_1_5_8.xml , 651
Cost/.idea/libraries/javawriter_2_1_1.xml , 330
Cost/.idea/libraries/javax_annotation_api_1_2.xml , 358
Cost/.idea/libraries/javax_inject_1.xml , 511
Cost/.idea/libraries/jsr305_2_0_1.xml , 330
Cost/.idea/libraries/junit_4_12.xml , 477
Cost/.idea/libraries/recyclerview_v7_25_3_1.xml , 771
Cost/.idea/libraries/rules_0_5.xml , 713
Cost/.idea/libraries/runner_0_5.xml , 719
Cost/.idea/libraries/SQLiteStudioRemote.xml , 239
Cost/.idea/libraries/support_annotations_25_3_1.xml , 479
Cost/.idea/libraries/support_compat_25_3_1.xml , 765
Cost/.idea/libraries/support_core_ui_25_3_1.xml , 771
Cost/.idea/libraries/support_core_utils_25_3_1.xml , 789
Cost/.idea/libraries/support_fragment_25_3_1.xml , 777
Cost/.idea/libraries/support_media_compat_25_3_1.xml , 801
Cost/.idea/libraries/support_v4_25_3_1.xml , 420
Cost/.idea/libraries/support_vector_drawable_25_3_1.xml , 632
Cost/.idea/libraries/transition_25_3_1.xml , 567
Cost/.idea/misc.xml , 2644
Cost/.idea/modules.xml , 345
Cost/.idea/runConfigurations.xml , 564
Cost/.idea/workspace.xml , 186557
Cost/app/.gitignore , 8
Cost/app/app.iml , 13414
Cost/app/build/generated/source/buildConfig/androidTest/debug/com/example/cost/test/BuildConfig.java , 449
Cost/app/build/generated/source/buildConfig/debug/com/example/cost/BuildConfig.java , 439
Cost/app/build/generated/source/r/androidTest/debug/android/support/test/espresso/R.java , 334
Cost/app/build/generated/source/r/androidTest/debug/android/support/test/rule/R.java , 330
Cost/app/build/generated/source/r/androidTest/debug/com/example/cost/test/R.java , 396
Cost/app/build/generated/source/r/debug/android/support/design/R.java , 126866
Cost/app/build/generated/source/r/debug/android/support/transition/R.java , 415
Cost/app/build/generated/source/r/debug/android/support/v7/appcompat/R.java , 100473
Cost/app/build/generated/source/r/debug/android/support/v7/recyclerview/R.java , 1421
Cost/app/build/generated/source/r/debug/com/example/cost/R.java , 590728
Cost/app/build/intermediates/blame/res/androidTest/debug/multi/values.json , 957
Cost/app/build/intermediates/blame/res/debug/multi/anim.json , 2
Cost/app/build/intermediates/blame/res/debug/multi/color.json , 2
Cost/app/build/intermediates/blame/res/debug/multi/drawable.json , 2
Cost/app/build/intermediates/blame/res/debug/multi/layout-v16.json , 2
Cost/app/build/intermediates/blame/res/debug/multi/layout.json , 2
Cost/app/build/intermediates/blame/res/debug/multi/values-af.json , 16201
Cost/app/build/intermediates/blame/res/debug/multi/values-am.json , 16195
Cost/app/build/intermediates/blame/res/debug/multi/values-ar.json , 16203
Cost/app/build/intermediates/blame/res/debug/multi/values-az-rAZ.json , 15604
Cost/app/build/intermediates/blame/res/debug/multi/values-b+sr+Latn.json , 16513
Cost/app/build/intermediates/blame/res/debug/multi/values-be-rBY.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-bg.json , 16207
Cost/app/build/intermediates/blame/res/debug/multi/values-bn-rBD.json , 16387
Cost/app/build/intermediates/blame/res/debug/multi/values-bs-rBA.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-ca.json , 16207
Cost/app/build/intermediates/blame/res/debug/multi/values-cs.json , 16203
Cost/app/build/intermediates/blame/res/debug/multi/values-da.json , 16199
Cost/app/build/intermediates/blame/res/debug/multi/values-de.json , 16203
Cost/app/build/intermediates/blame/res/debug/multi/values-el.json , 16209
Cost/app/build/intermediates/blame/res/debug/multi/values-en-rAU.json , 16375
Cost/app/build/intermediates/blame/res/debug/multi/values-en-rGB.json , 16375
Cost/app/build/intermediates/blame/res/debug/multi/values-en-rIN.json , 16375
Cost/app/build/intermediates/blame/res/debug/multi/values-es-rUS.json , 16385
Cost/app/build/intermediates/blame/res/debug/multi/values-es.json , 16205
Cost/app/build/intermediates/blame/res/debug/multi/values-et-rEE.json , 16385
Cost/app/build/intermediates/blame/res/debug/multi/values-eu-rES.json , 16381
Cost/app/build/intermediates/blame/res/debug/multi/values-fa.json , 16205
Cost/app/build/intermediates/blame/res/debug/multi/values-fi.json , 16199
Cost/app/build/intermediates/blame/res/debug/multi/values-fr-rCA.json , 16385
Cost/app/build/intermediates/blame/res/debug/multi/values-fr.json , 16209
Cost/app/build/intermediates/blame/res/debug/multi/values-gl-rES.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-gu-rIN.json , 16379
Cost/app/build/intermediates/blame/res/debug/multi/values-h720dp-v13.json , 995
Cost/app/build/intermediates/blame/res/debug/multi/values-hdpi-v4.json , 1055
Cost/app/build/intermediates/blame/res/debug/multi/values-hi.json , 16205
Cost/app/build/intermediates/blame/res/debug/multi/values-hr.json , 16203
Cost/app/build/intermediates/blame/res/debug/multi/values-hu.json , 16209
Cost/app/build/intermediates/blame/res/debug/multi/values-hy-rAM.json , 16377
Cost/app/build/intermediates/blame/res/debug/multi/values-in.json , 16205
Cost/app/build/intermediates/blame/res/debug/multi/values-is-rIS.json , 16373
Cost/app/build/intermediates/blame/res/debug/multi/values-it.json , 16201
Cost/app/build/intermediates/blame/res/debug/multi/values-iw.json , 16197
Cost/app/build/intermediates/blame/res/debug/multi/values-ja.json , 16191
Cost/app/build/intermediates/blame/res/debug/multi/values-ka-rGE.json , 16381
Cost/app/build/intermediates/blame/res/debug/multi/values-kk-rKZ.json , 16379
Cost/app/build/intermediates/blame/res/debug/multi/values-km-rKH.json , 16377
Cost/app/build/intermediates/blame/res/debug/multi/values-kn-rIN.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-ko.json , 16187
Cost/app/build/intermediates/blame/res/debug/multi/values-ky-rKG.json , 16379
Cost/app/build/intermediates/blame/res/debug/multi/values-land.json , 4080
Cost/app/build/intermediates/blame/res/debug/multi/values-large-v4.json , 7145
Cost/app/build/intermediates/blame/res/debug/multi/values-ldltr-v21.json , 993
Cost/app/build/intermediates/blame/res/debug/multi/values-lo-rLA.json , 16375
Cost/app/build/intermediates/blame/res/debug/multi/values-lt.json , 16209
Cost/app/build/intermediates/blame/res/debug/multi/values-lv.json , 16207
Cost/app/build/intermediates/blame/res/debug/multi/values-mk-rMK.json , 14835
Cost/app/build/intermediates/blame/res/debug/multi/values-ml-rIN.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-mn-rMN.json , 16377
Cost/app/build/intermediates/blame/res/debug/multi/values-mr-rIN.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-ms-rMY.json , 16381
Cost/app/build/intermediates/blame/res/debug/multi/values-my-rMM.json , 16385
Cost/app/build/intermediates/blame/res/debug/multi/values-nb.json , 16195
Cost/app/build/intermediates/blame/res/debug/multi/values-ne-rNP.json , 16387
Cost/app/build/intermediates/blame/res/debug/multi/values-night-v8.json , 5605
Cost/app/build/intermediates/blame/res/debug/multi/values-nl.json , 16209
Cost/app/build/intermediates/blame/res/debug/multi/values-pa-rIN.json , 16375
Cost/app/build/intermediates/blame/res/debug/multi/values-pl.json , 16205
Cost/app/build/intermediates/blame/res/debug/multi/values-port.json , 971
Cost/app/build/intermediates/blame/res/debug/multi/values-pt-rBR.json , 16385
Cost/app/build/intermediates/blame/res/debug/multi/values-pt-rPT.json , 16385
Cost/app/build/intermediates/blame/res/debug/multi/values-pt.json , 16209
Cost/app/build/intermediates/blame/res/debug/multi/values-ro.json , 16209
Cost/app/build/intermediates/blame/res/debug/multi/values-ru.json , 16207
Cost/app/build/intermediates/blame/res/debug/multi/values-si-rLK.json , 16381
Cost/app/build/intermediates/blame/res/debug/multi/values-sk.json , 16201
Cost/app/build/intermediates/blame/res/debug/multi/values-sl.json , 16205
Cost/app/build/intermediates/blame/res/debug/multi/values-sq-rAL.json , 16381
Cost/app/build/intermediates/blame/res/debug/multi/values-sr.json , 16205
Cost/app/build/intermediates/blame/res/debug/multi/values-sv.json , 16203
Cost/app/build/intermediates/blame/res/debug/multi/values-sw.json , 16201
Cost/app/build/intermediates/blame/res/debug/multi/values-sw600dp-v13.json , 14209
Cost/app/build/intermediates/blame/res/debug/multi/values-ta-rIN.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-te-rIN.json , 16385
Cost/app/build/intermediates/blame/res/debug/multi/values-th.json , 16201
Cost/app/build/intermediates/blame/res/debug/multi/values-tl.json , 16211
Cost/app/build/intermediates/blame/res/debug/multi/values-tr.json , 16201
Cost/app/build/intermediates/blame/res/debug/multi/values-uk.json , 16203
Cost/app/build/intermediates/blame/res/debug/multi/values-ur-rPK.json , 16379
Cost/app/build/intermediates/blame/res/debug/multi/values-uz-rUZ.json , 16383
Cost/app/build/intermediates/blame/res/debug/multi/values-v11.json , 19902
Cost/app/build/intermediates/blame/res/debug/multi/values-v12.json , 3390
Cost/app/build/intermediates/blame/res/debug/multi/values-v13.json , 967
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