clear all cache android

public class MemoryCache { private static final String TAG = "MemoryCache";Private mapNew linkedhashmapPrivate long size=0;//current Allocated sizePrivate long Limit=1000000;//max memory in bytes Public MemoryCache () {Use 25% of available heap sizeSetlimit (Runtime.getruntime (). MaxMemory ()/4);} public void Setlimit (long new_limit) {Limit=new_limit;LOG.I (TAG, "MemoryCache would use the up to" +limit/1024./1024.+ "MB");} Public Bitmap get (String ID) {try{if (!cache.containskey (ID))return n

I plan to write a series of articles on the cache mechanism of android. At present, some topics are still in the outline stage. Please complete them slowly. 1 Android focus When a new focus is found in the Node List, check and find that if you are a sibling with yourself, push it to the stack. When all the siblings are

You do not need to use checkbox to select all Android ListView entries! Hello everyone, I flipped through my previous notes and found a feature that I specifically marked, that is, the Select All feature of ListView. I suddenly remembered my hard work at that time, because of my college mechanical background, I did not know what code I was after my graduation. I

This article mainly explains how to search through the Baidu Map API to get all the poi in a city. It is necessary to emphasize the word "all" in order to attract attention, because in the search for POI, the default returns only one page of 10 search results, then how to get all the search results? In fact, the Baidu Map API is to provide a relevant method, but

seen this introduction glide article, the Chinese version here. This paper introduces and compares the glide and Picasso from various aspects, in general, they are very similar, and have almost the same usage style of API. But glide is notch above in caching policies and loading GIFs. Finally, the author also strongly recommended this library.And it is said that in Google's new photos application, traces of glide are visible everywhere. See here, you are not eager to try this library? Just as y

seen this introduction glide article, the Chinese version here. This paper introduces and compares the glide and Picasso from various aspects, in general, they are very similar, and have almost the same usage style of API. But glide is notch above in caching policies and loading GIFs. Finally, the author also strongly recommended this library.And it is said that in Google's new photos application, traces of glide are visible everywhere. See here, you are not eager to try this library? Just as y

1. RecallExample of a movie list written by Jsonobjectrequest and Imageloader using volley2. Focus(1) Encapsulation volley internal request class (request queue, data request, picture request, picture cache)(2) Encapsulating Response.listener and Response.errorlistener callback functions(3) Usage3. Introduction to Folders3.1 Gsonrequset.javaDefine your own Gson request and instantiate the JSON string directly as an object3.2 Volleyapplication.javaInhe

Android problem summary: (1) the use and cache mechanism of ViewPager in June 1.41. Implement lazy page loading for ViewPager;In some cases, for example, if you use ViewPager to view multiple large charts, multiple images cannot be loaded at a time. The specific content of the page (or pre-loaded on the next page) is only loaded when you browse the page.2. Control the number of pages cached by ViewPager.Com

I haven't updated it for a while, but the project has basically been completed. You can write some new articles. Although the project has been completed, there are still many problems. In May March, new leaders will lead the new version to solve the adaptation and optimization of various mobile phones. This time, I will talk about the problem of loading images asynchronously in listview. There are a lot of related articles, but here I will put all th

) {uihelper.toastmessage (mainactivity. This, r.string.xml_parser_failed); } } }; Private voidInitData () {selectordialog.show (); NewThread () { Public voidrun () {Message msg=NewMessage (); BooleanIsrefresh =false; Try{newslist list=appcontext.getnewslist (); if(List.getnewscount () > 0) {Msg.what= 1; Msg.obj=list.getnewslist (); Appcontext.saveobject (list,"Newslist_"); } Else{msg.what=-1; } } Catch(appexception e) {e.printstacktrace (); Msg.what=-2; Msg.obj=e;

I also DIY an Android Remote Control-all open source, diyandroid remote control I also DIY an Android Remote Control-all open source 1. Trial I remember song Baohua put forward this theory in "device-driven development details": "Software and Hardware penetrate into each other's territory." This proof is true, you ca

Mainly introduced in the summary of Android development commonly used tool classes, most of the same applies to Java.currently includeshttputils,Downloadmanagerpro,Safe.ijiami,shellutils,packageutils,preferencesutils,jsonutils,FileUtils,resourceutils,StringUtils,parcelutils,randomutils,arrayutils,imageutils,listutils,maputils,objectutils,serializeutils,systemutils,timeutils. 1, HttputilsHTTP Network tool classes, mainly including HttpGet, HttpPost, an

I have DIY one Android remote - all open source1. TrialRemember Song Baohua in the "device-driven development specific explanation" put forward a theory "software and hardware infiltrate each other's territory", this proves to be true, the use of the upper-level APP software with simple and simpler hardware design can complete a remote control. Have developed the application of Internet users e-mail asked h

. Since Asus P1801 is a combination of an Android tablet and a standard PC, the hardware is bound to have two sets of combinations. As an all-in-one computer, Asus P1801 is equipped with the Intel Core I3/i5/i7 processor, 8GB memory, 1TB hard drive, with Nvidia gt730m standalone graphics, and the Asus P1801 as a tablet is equipped with the NVIDIA Tegra 3 processor, 2GB memory, 32GB storage capacity, 1080P

I also DIY an android remote - all open source1. TrialRemember Song Baohua in the "Device driver development in detail" put forward a theory of "software and hardware to infiltrate each other's territory", this proves that this is true, the use of upper-level APP software with simple and simpler hardware design can complete a remote control. There are development applications netizens e-mail asked the onlin

I am in the undergraduate graduation stage, graduation design to do an Android platform, for Java or small white I do have a bit of difficulty, but in the process is still a lot of harvest, now hope to put themselves in the process encountered in the various problems and friends to share, the gods do not like to spray, because the graduation design to do six months, So the next series is almost half a year to write, I try to persist.Let's get started!

files like your phone's own file system browser.Whether it's an internal SD card or an external SD card, it's a phone's external storage, and the phone's internal storage and external storage share the same device.Internal Storage Path:All apps installed to the phone will generate a package name folder in the Data/data directory, which is the path to the internal storageApps can read and write files only in their own package name folderRead and write files using the path APIGetfilesdir () The p

Originally to write a detection of the temperature of the mobile phone application, learning about the sensor API, can result how to write No. After detection, found that the sensor was null, it is clear that my phone does not have a type_ambient_temperature sensor.So I wrote an app that lists all the available sensors. The code is as follows:1 Packagekempff.sensors;2 3 Importjava.util.List;4 5 Importandro

() {Manager.exit ();}}3, after the creation of the activity will inherit the root activity can be, as follows:Package com.exit.activitys;Import android.content.Intent;Import Android.os.Bundle;Import Android.view.View;Import Android.view.View.OnClickListener;Import Android.widget.Button;Import Android.widget.TextView;Import com.exit.BaseActivity;Import COM.EXIT.R;public class Exitactivity extends baseactivity implements onclicklistener{Private Button start;Private Button exit;Private TextView TI

[] Encrypt (byte[] raw, byte[] clear) throws Exception {Secretkeyspec Skeyspec = new Secretkeyspec (Raw, "AES"); Cipher Cipher = cipher.getinstance ("AES"); Cipher.init (Cipher.encrypt_mode, Skeyspec, New Ivparameterspec (New byte[ Cipher.getblocksize ()]); byte[] encrypted = cipher.dofinal (clear); return encrypted;} private static byte[] Decrypt (byte[] raw, byte[] encrypted) throws Exception {Secretkeysp