获取内存大小，可以获取总内存，剩余内存，以及已经使用的内存 文件目录： CheckMemory ............idea .................name ................androidDexCompiler.xml ................compiler.xml ................copyright .........................profiles_settings.xml ................encodings.xml ................misc.xml ................modules.xml ................scopes ......................scope_settings.xml ................⸜igner.xml ................vcs.xml ................workspace.xml ...........AndroidManifest.xml ...........ant.properties ...........assets ...........bin ...........build.xml ...........CheckMemory.iml ...........gen ..............me ................ ormalhh ........................checkmemory ...................................BuildConfig.java ...................................Manifest.java ...................................R.java ...........libs ...........local.properties ...........out ..............production ........................CheckMemory ...................................CheckMemory.apk ...................................CheckMemory.unaligned.apk ...................................me ..................................... ormalhh .............................................checkmemory ........................................................BuildConfig.class ........................................................MyActivity.class ........................................................R$attr.class ........................................................R$drawable.class ........................................................R$id.class ........................................................R$layout.class ........................................................R$string.class ........................................................R.class ...........proguard-project.txt ...........project.properties ........... es ..............drawable-hdpi ...........................ic_launcher.png ..............drawable-ldpi ...........................ic_launcher.png ..............drawable-mdpi ...........................ic_launcher.png ..............drawable-xhdpi ............................ic_launcher.png ..............layout ....................main.xml ..............values ....................strings.xml ...........src ..............me ................