file manager apps for android

For Android Developers, ANR (Application Not Responding) is a common problem. Generally, if an ANR occurs, the system generates a trace file in the/data/anr/directory. By analyzing the trace file, you can locate the cause of the ANR. There are many reasons for the generation of ANR, such as CPU usage is too high, events are not responded to in a timely manner, de

Android Source Code contains the APK file containing the so file, androidapk Method 1: 1 include $(CLEAR_VARS) 2 # Module name should match apk name to be installed 3 LOCAL_MODULE := Test 4 LOCAL_MODULE_TAGS := optional 5 LOCAL_SRC_FILES := $(LOCAL_MODULE).apk 6 LOCAL_MODULE_CLASS := APPS 7 LOCAL_MODULE_SUFFIX := $(

1, first, the Android file download requires the following permissions:2, because the file download is a long time task, can not be updated in the UI thread, need to open up a new thread to download the work, here we use the Android encapsulated asynchronous task Class--asynctask, this class to do some long-time work:P

Resources are additional files that you use in your code and are packaged into your application during compilation. Android supports a variety of different files, including XML, PNG, and JPEG files. The format of an XML file depends on the content it describes. These files describe the types, syntaxes, or formats supported by the files. In consideration of loading efficiency, resources are separated from th

More and more developers are keen to use html5 + JavaScript to develop mobile webapps. However, it is still unknown whether the emergence of HTML5WebAPP can replace mobile apps in the future .,. More and more developers are keen to use html5 + JavaScript to develop mobile Web apps. However, it is still unknown whether HTML5 Web apps can replace mobile

("Upfile", "Onactivityresult" + result.tostring ()); String Path = Fileutils.getpath (this, result); if (textutils.isempty (path)) {muploadmessage.onreceivevalue (null); Muploadmessage = null; Return Uri uri = uri.fromfile (new File (path)); CLOG.I ("Upfile", "Onactivityresult after parser URI:" + uri.tostring ()); if (Build.VERSION.SDK_INT >= build.version_codes. Lollipop) {Muploadmessage.onreceivevalue (new Uri[]{uri

For people engaged in Android development, encountering ANR (application not responding) is a more common problem. In general, if a ANR occurs, the system will generate the trace file in the/data/anr/directory, by analyzing the trace file, you can locate the cause of the ANR. There are many reasons for the ANR, such as high CPU use, the event did not get timely r

folders, if you don't have the file attributes set to readable or writable.As long as you use Mode_private mode, other apps won't be able to access your files.4) External storage spaceBecause the external space is removable, you must ensure that it exists before you access it. Android provides a responsive interface to determine if the peripherals are available.

Share an Android-like qq lan Instant Messaging Software (file, voice, recording) and android instant messaging 1. Supported functions include text information interaction, voice chat, File Sending and recording The source code will be appended. Ii. UI display Diagram 3. My tests are very successful. Only one disadva

how to write some text to the file:String filename = "myfile"; String string = "Hello world!"; FileOutputStream outputstream;try {outputstream = openfileoutput (filename, context.mode_private); Outputstream.write (String.getbytes ()); Outputstream.close ();} catch (Exception e) {e.printstacktrace ();}Or, if you need to cache some files, you should use Createtempfile (). For example, the following example extracts the file name from a URL, and then cr

on the Android platform, which is 9-patches. As far as I know, I have not found any optimization tool for this file. However, you only need to ask your designer to minimize its scalable areas and content areas. This not only reduces the size of resource files, but also makes it easier to maintain resource files in the future.Limit the number of cpu architectures supported by the appGenerally,

directory of system, SDcard, data, cache, etc.3) Mount some file systems to some directories, such as Mount Tmpfs tmpfs/sqlite_stmt_journals4) Set up user groups, permissions for some files5) set some thread parameters6) Set the TCP cache to largeSystem.img userdata.img Both images belong to the YAFFS2 file format.The system.img file is an image of the system di

1. The project document so-called list androidmanifest.xml documents. The file, but with great leverage, for example: app name. icons, app-supported version apps, and more. I'll show you the role of each of the parameters in this list file below. To access the Drawable constants of the R.java file, use the icon's ic_

pngquant, ImageAlpha, and ImageOptim. You can select a suitable tool. You can also optimize an image file that only exists on the Android platform, which is 9-patches. As far as I know, I have not found any optimization tool for this file. However, you only need to ask your designer to minimize its scalable areas and content areas. This not only reduces the size

storage are also deleted.Technically, if you set the file property to be readable when you create the internal storage file, other apps can access your app's data, provided that he knows the package name of your app, and if the property of a file is private, then even if you know the package name, other

application. When an app is uninstalled, these files in the internal storage are also deleted.Technically, if you set the file property to be readable when you create the internal storage file, other apps can access your app's data, provided that he knows the package name of your app, and if the property of a file is

, click "network and sharing center" in the red circle. The page is displayed in "all networks, click 1 to enable sharing so that users who can access the network can read and write files in the public folder, and then click 2 to Disable password protection sharing (in this way, the LAN can be accessed without a password ), finally, click 3 to save the changes. Open the TV, click the ES file browser, and then click 1 network, 2 LAN, and 3 sh

Receives files through Bluetooth and opens the file from the historical transmission record. You cannot select an appropriate application automatically.However, to open the new received file from File Manager, you can select the corresponding application (such as video playerto open the .3gp).mp4

Qt on Android: resource file system qrc and assets, androidqrc When using Qt for Android development, sometimes our application carries some resource files, such as png and jpg, or some configuration files, such as xml, where are these files stored? There are two methods: Let's take a look.The Qt Resource System Qrc and Qt resource

BackgroundLike applications on other platforms, apps in Android also use various resources, slice, and strings and place them in the corresponding folders of the source code, such as/res/drawable, /res/xml,/res/values/,/res/raw,/res/layout and/assets. Android also supports and encourages developers to use XML resources to implement UI-related layout and elements.