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); return result; /** * Android 4.0 calls this method to get the database. * * @see android.content.contextwrapper#openorcreatedatabase (java.lang.String, int, * Andro Id.database.sqlite.SQLiteDatabase.CursorFactory, * android.database.DatabaseErrorHandler) * @ Param Name * @param mode * @param factory * @param errorhandler * * * @Override Public sqlitedatabase openorcreatedatabase (String name, int mode, Cursorfactory factory, Databa

Download the android simulator and decompress it to get the android-sdk-linux_x86 folder Go to android-sdk-linux_x86/tools/ Execute./android to create a test virtual phone Start the virtual phone and change the partition size to 128 MB. ./Emulator-AVD test-partition-size

centralized management of configuration files ) In this Ant Packaging Requirements , You need to modify Java Two constant attributes in the file . Based on such requirements , First Http://blog.csdn.net/to_cm/article/details/6051470 Normal Android Project package Build. XML, And Build. Property. It should be noted that , Because Android SDK tool, And Platform tools Some upgrades , P

Http://www.androidren.com/index.php?qa=282qa_1=android JS calls Java code or uses JavaScript-related techniques to change how to confuseAndroid 4.2 Start JS call Java code must add @JavascriptInterface to call. Add @JavascriptInterface after you have to consider the confusion of the time of the problem, if confused when the @JavascriptInterface lost your program can not be called. It's really simple, you ju

In the \packages\apps\camera\src\com\android\camera\settingchecker.java:Case Row_setting_jpeg_quality:int jpegquality = getjpegquality (Context, Integer.parseint (value));Parameters.setjpegquality (jpegquality);BreakModified to:Case Row_setting_jpeg_quality:int jpegquality = 100;Parameters.setjpegquality (jpegquality);BreakCan.The scope of the jpegquality is 1~100, you can change it on demand, and the curre

(index); Is the data that gets the specified subscript index to int type; int id = cursor.getint (cursor.getcolumnindex ("id")) ; String named = cursor.getstring (Cursor.getcolumnindex ("name")); String number = cursor.getstring (Cursor.getcolumnindex ("number"));//Instantiate query result data Object person = new person (ID, named, number);} Close the database connection, release the Resource Db.close ();//Return the data result object return person; /** * Update a data based on name * * @para

http://blog.csdn.net/zhuhai__yizhi/article/details/44017609Recently started learning to use Android StudioWant to set the background color, but all the Internet search is copied and pastedAnd didn't write the right steps.I finally found out where I was after I messed up.1. Click Setting2, Editor inside Choose colors fonts, unfold. (If you select colors fonts directly, it will only show the top of the pre-saved settings, we can click Save As, and the

Create two styles in Res/drawable before/after clickingRound1"1.0"encoding="Utf-8"?>2"http://schemas.android.com/apk/res/android">3"0"is from left to right 90 is from top to bottom 180 is right to left---4Gradient5Android:startcolor="#4169E1"6Android:endcolor="#E6E6FA"7android:angle="0"/>8Stroke9Android:width="2DP"TenAndroid:color="#D2691E" One/> A"10dip"/> -padding -android:left="10DP" theandroid:top="10DP" -android:right="10DP" -Android:bottom="10DP

Now the Project menu under the build automatically removed, do not let it synchronize the compilation, wait a unified to compile. Select the package we need to change, right-click->refactor->rename, the following interface appears, select the previous three options, select Preview, the interface->ok can beContinue Now we can clean up our project; Select the project name->project->clean In this case, the class in the project may be wrong. Take

To meet this demand, first look at the picture:In fact, is a software login interface, the initial is the first figure, when the soft keyboard pop-up into the second figure, because the login interface has a user name, password, login button, not so the soft keyboard pop-up will cover the login button (in fact, before the implementation of the ScrollView inside, Listen to the soft keyboard popup after scrolling to the bottom, soft keyboard hidden after scrolling to the top, is also possible).The

Recently there are a lot of small partners want to update the SDK, but for various reasons, not updated, so today I teach you how to update the SDK under winThe first thing to do is to modify the system file hostsThe path basically is similar, oneself according to own system to lookThen use the tool such as text Viewer to open this file, if there is no permission, then find ways to add the ability to edit this file, such as right-click Properties to add Operation permissions,Open as:Then add the

After Android uses Zxing to scan the QR code and change it to a portrait screen, the preview screen is stretched and distorted. Perfect solution: After Android uses Zxing to scan the QR code and changes it to a portrait screen, the preview screen is stretched and distorted. Step 1: Find com.zxing.cameraPackage CameraConfigurationManager.javaFile void initFromC

Android Network-determine the Network status (Network connection, change, and determine 2G/3G/4G) Currently, most apps need to obtain data from the network. Therefore, it is inevitable to access the network. Before accessing the network, we should first determine the network status. In fact, before accessing the network, we need to make some status judgments and corresponding status judgments for processing

; %1$d expression means the entire Name= "Baoxiang" string, the first integral typeIn project developers, it is often necessary to combine the two. You can avoid many textview stitching, as shown below: TextView TextView = (TextView) Findviewbyid (R.id.testview); String Text = String.Format (Getresources (). getString (R.string.baoxiang), 2,"Silver Treasure Chest"); int index[] = new int[3]; index[0] = Text.indexof ("2"); index[1] = Text.indexof ("18"); index[2] =

Objective The Ormlite database is placed by default under databases, and sometimes you may need to use a database of preset data, and you may need to change the default path. Body 1, Inherit ormlitesqliteopenhelper: public class Sqlitehelperorm extends Ormlitesqliteopenhelper {public static final String Database_path = Environment . getExternalStorageDirectory () + "/test.db"; @Override public synchronized Sqlitedatabase getw

A very important feature of modern mobile devices is the direction in which the screen can be rotated. Of course, Android is no exception. Android supports two screen orientations: Portrait (vertical screen) and landscape (horizontal screen). By default, when you change the screen orientation of a handheld device, the current anctivity automatically redraw its co

file.Listview.xml, in a color way, you can't use listselector here.List_item_color.xml, set the background directly in the item's layout by using the color settingsandroid:background= "@drawable/list_item_color_bg" >2. Background mapThis approach is to use the picture in the selector file to set the background of item, whether it is to set the android:listselector of the ListView or the way to set the android:background of the item, However, it is best to use Android:background, as the default

In order to achieve better user interaction, you often need to change the background color of the button and the font color of the textview to indicate the operational status of the user's current menu, android provides a method to define a selector so that programmers can configure the background and color values in advance. The specific method is as follows: 1. Button (imagebutton, imageview, including ge

When there is nothing going on today, the router finds that the device name displayed when the mobile phone is connected is too ugly, So I want to change it. The following methods are available after searching on the Internet: This method is suitable for all users, even if you do not program It would be better if you have brushed the machine. First, you need to download the ADB tool, which is used to connect to your mobile phone and perform

Android icon coloring to save the APK volume, there are many online introduction, the use is very simpleUsually use this way, you have to change the code today, so recordFirst KindDrawable icon;if (Android.os.Build.VERSION.SDK_INT The second kind, need V4 packageDrawable icon1;if (Android.os.Build.VERSION.SDK_INT Well, all two can be achieved. I don't know which one is better.There are a lot of related info