how to save snapchats android

Preface: The previous article wrote the use of Sharedpreferences in Android to save data, sharedpreferences when saving data is mainly to save some application settings information or a small amount of user information, And it is the information of the string class saved in the form of Key-value, which is more limited. For example, you need to

Android log printing LogUtils can locate the class name, method name, and number of lines with errors, and save log files. 　　During development, we often use the log printing method to debug our applications. In Java, we often use the System. out. println () method to print logs on the console for debugging. Android has a dedicated Log class to print logs in the

A recently developed project has two main features, and these two points also need to focus on planning the solution before the project is developed: Requires a large amount of data to be requested and rest service side This data is also saved locally to the SQLite database For the 1th, the current volley, Gson and other frameworks can solve the whole process of pulling JSON data from the server request data and parsing it into Java object. But for the 2nd, it's a bit of a head

Save Restore State with the previous example of Android Apidemo example parsing (9): App->activity->persistent state implements a similar UI, but with slightly different functionality and implementation methods.(9) The value of EditText in the UI is maintained through shared Preferences and Activity's OnPause (), and Onresume ().This example is done by Onsaveinstancestate (Bundle savedbundle) to maintain t

() + "/image.jpg"); bitmap newbitmap = imagetools. zoombitmap (bitmap, bitmap. getwidth ()/scale, bitmap. getheight ()/scale); // because the bitmap memory usage is large, memory needs to be recycled here; otherwise, an out of Memory exception bitmap will be reported. recycle (); // display the processed image on the interface and save it to the local iv_image.setimagebitmap (newbitmap); imagetools. savephototosdcard (newbitmap, environment. getexter

onsaveinstancestate () method does not need to be saved in some scenarios. For example, when you exit the activity by using the "back-to-back" key, because the user explicitly does not need to save the status to close the activity ). If the system wants to call the onsaveinstancestate () method, it can be called before the onstop () method and the onpause () method. However, even if you haven't done anything and haven't implemented the onsaveinstan

Android File save read can be selected in the phone itself storage, external storage such as SD card, this article will be introduced in turn.1. Save and read files in the phone itself. The layout file is as follows:As follows:In the File name box, fill in the file name of the save, the File content box to fill in the

the public files to the external store: Copy Code code as follows: Public File Getalbumstoragedir (String albumname) { Get user's public picture directory File File = new file (Environment.getexternalstoragepublicdirectory ( environment.directory_pictures), albumname); if (!file.mkdirs ()) { LOG.E (Log_tag, "Directory not created"); } return file; } 2. Proprietary files (private file) Files that belong to your app that will be deleted when the user unloa

This article illustrates the saving and reading function of the Android implementation file. Share to everyone for your reference, specific as follows: Note: There are Getfiledir () and Getcachedir () in the activity; method to obtain the current package file path from the current phone's storage space Getfiledir ()-----/data/data/cn.xxx.xxx (current package)/filesGetcachedir ()-----/data/data/cn.xxx.xxx (current package)/cache 1. Write the file re

directory is for app private or other apps to read and write.Example: Context.getdir ("Dir1", mode_private): /data/data/com.srain.cube.sample/app_dir15. Pay special attention to external storage, access to $cacheDir or $filesDir and below the pathUnder API Level 8, or if there is not enough space, the associated method will need to be constructed when the path is empty.@TargetApi (version_codes. FROYO) Public StaticFile Getexternalcachedir (context context) {if(Build.VERSION.SDK_INT >

The previous learning process has finished learning Android, but in the next nearly a year has not been developed Android, so all the knowledge of Android is a little forgotten, so will continue to learn Android, make this study notes. In addition: Because in the summer time to develop the

Android log Print class Logutils, able to navigate to the class name, method name, and number of rows where the error occurred and save the log file In development, we often use print log to debug our application. In Java we often use Method System.out.println () to print logs in the console for our debugging. There is a dedicated class log in Android to ena

Save Restore State is similar to the previous example Android ApiDemo example parsing (9): App-> Activity-> Persistent State to implement the UI, but the functions and implementation methods are slightly different. (9) The EditText value in the UI is maintained through Shared Preferences and onPause () of the Activity, and onResume. In this example, the onSaveInstanceState (Bundle savedBundle) is used to m

This article is an example of how Android programming SMS reads SMS and saves it to SQLite. Share to everyone for your reference, specific as follows: Android SMS messages are kept in the SQLite database in the Android system, but are not accessible to other programs (Android security) Now we're reading SMS messages

outstate) { super.onsaveinstancestate (outstate); Outstate.putstring ("temp", temp); } } It is important to note that the Onsaveinstancestate () method is not necessarily called, because some scenarios do not need to save state data. For example, when the user presses the back key to exit the activity, the user obviously wants to close the activity, at which point there is no need to save the d

Android Studio code prompts that the error message is invalid (not available in Power Save mode) and androidstudio According to a question raised by a Boyou, I have written it here. It is estimated that many people will encounter this problem, but they do not know how to solve it. After the Code Automatic prompt function is set, it does not take effect. To set the Code Automatic prompt, stamp this: how to s

######################################## #####This article is original to extreme cold ice, for reprint, please specify the source #################################### ######### I recently made several small feature files on the android browser to share with you. The effect of this feature is that you can choose to save the link on the webpage to the bookmarks after the link is directly pressed. The specifi

Android development Activity status save OnSaveInstanceState Parameter Parsing, saveinstancestate Author:Han shuliang Repost the famous source: Http://blog.csdn.net/shulianghan/article/details/38297083 1. Related Methods 1. Example of saving status package com.example.octopus_saveinstance;import android.app.Activity;import android.os.Bundle;public class MainActivity extends Activity {@Overrideprotected

) | | Textutils.isempty (pwd) { toast.maketext (this, "User name password cannot be empty", Toast.length_short). Show ();//toast when the user name is empty, "User name password cannot be empty" }else{ //Login action}}Display effect:③ See if "Remember Password" is selected in the processPrint log:# #日志的级别LOG.V ("mainactivity", "I am a Log");//v:verbose alert BlackLOG.D ("mainactivity", "I am a Log");//d:debug Debug BlueLOG.I ("mainactivity", "I am a Log");//i:info Re

manner Uninstall the app and delete only the data you stored ingetExternalFilesDir()目录下的文件 外部存储适用于不需要存储限制的文件以及你想要与其他app共享的文件或者是允许用户用电脑访问的文件 app默认安装在内部存储中，通过指定android:installLocation 属性值可以让app安装在外部存储中。 获取外部存储权限: Read and write: ... > android:name= "Android.permission.WRITE_EXTERNAL_STORAGE"/> ... Manifest > Read: ... > android:name= "Android.permission.READ_EXTERNAL_STORAGE"/> ... manifest> You do not need any permissions to