. Because 65536 equals 64x1024, this limit is referred to as a "64k reference limit."This limit requires us to configure the application build process, need to generate multiple Dex files, so called Multidex configuration.
Analysis of causes and precautions
Solution divided into Android 5.0 and above systems and 5.0 of the following system how to do. Sir do not worry, first look at me to analyze the reasons, after all, I want to install the force ha
/AndroidMainfest. xml for viewing.
If you declare it directly in AndroidMainfest. xml, it will be ignored during compilation, and the original value will be overwritten Based on build. gradle.
All right, we all know that the uses-sdk tag contains three attributes: minSdkVersion, maxSdkVersion, and targetSdkVersion. In addition, when we use Android Studio, the project we created is also a Gradle project, th
background. As shown in the following illustration:
Android6.0 Run time permissions:
Given the relatively less secure version rights management prior to 6.0, Android 6.0 adopts a new permission model that only tells the user whether to authorize it at runtime time, rather than when it was originally installed, and by default every time the page is opened at run time, You need to check to see if you have the required permission request. Such users h
different build needs.
The following is a column that demonstrates how to set these flavors in the Gradle build file:
android { productFlavors { // Define separate dev and prod product flavors. dev { // dev utilizes minSDKVersion = 21 to allow the Android gradle plugin // to pre-dex each module and produce an APK that can b
snippet of Launcher to demonstrate how to manually declare your permissions:
Android: name = "com. android. launcher. permission. INSTALL_SHORT-CUT"
Android: permissionGroup = "android. permission-group.SYSTEM_TOOLS"
Android: protectionLevel = "normal"
Figure Description: Moving, backup after the launch of Android virtual machine appears
Solution to the problem of panic:could not open D:\java2\android\android-sdk-windows\.android\avd\test.ini
A few days ago, I am sorting some files, the previously installed on the Android
(1) Android. App. Fragment: the minimum compatible version is Android: minsdkversion = "11"
Therefore, your application is not compatible with applications under 3.0.
You can use the
(2) Android. Support. v4.app. Fragment: compatible with version 1.6. The ProgramIn the Add or replace method, you also need
). If no such API application is available, you should declare the minimum supported version as API Level 14:...The Minsdkversion attribute declares the minimum version with which your app is compatible and the Targetsdkversion Attri Bute declares the highest version on which you ' ve optimized your app.The Minsdkversion property declares the minimum system version that the application is compatible with, a
or later)
CheckManifest () checks whether the AndroidManifest. xml file has the required permissions for configuration, checks whether the broadcast receiver has the correct permissions and filters, and whether it can normally receive broadcasts. Otherwise, an exception is thrown.
Register () registers a GCM service. It starts a service named com. google. android. c2dm. intent. REGISTER with the action name. Note that this is the real GCM service, an
Android android APK decompilation reverse, Android android apk
The reverse of the android APK program is much easier than that of the WindowsPE file.1. the android APK program is actually a zip file that can be opened with winrar
types (debug, release, test)install/uninstallTask, if the output file can be installed (must be signed ).3.4 basic build process Customization
The Android plug-in provides a large number of DSL to customize most things directly from the build system.3.4.1 Manifest attributes
With DSL, you can configure the following manifest attributes:
MinSdkVersion
TargetSdkVersion
VersionCode
VersionName
Applicati
Dex file. To circumvent this limitation, we can use the Multidex support library, which becomes part of our apk's main dex file and is responsible for managing our APK access to other Dex files and code.Note: If our project minsdkversion is 20 or lower, you need to disable Androidstudio on-the-fly when running to Android 4.4 (API leve 20) or a lower version of the deviceSecond,
configuration information I used for the Gradle, which is under the main project, that is, the above 2 places In addition, 1 configuration items in the default, because some of the library project default maven ( the default is this jcenter ()) warehouse is not found, so I added aMavencentral () Apply plugin: ' Com.android.application ' android {compilesdkversion buildtoolsversion "21.0.1" Defaultconfig { ApplicationID "Com.jiangjinyue.pangdan
that allows an import has a minSdkVersion greater than the version defined in other higher-priority lists.
The list merging priority determines which list settings are retained in the merge conflicts. Use the high-priority order file settings to overwrite the low-priority list. The following list details which configuration sets the highest priority during the merge process:
Highest priority: buildType Configuration
High priority: productFlavor
configuration, requiring you to make some modifications to your application development project. :Modify the configuration of Gradle and support multidex to modify your manifest. Make it support the multidexapplication class
Modify the Gradle build as follows:
android { compileSdkVersion 21 buildToolsVersion "21.1.0" defaultConfig { ... minSdkVersion 14 targetSdkVersion 21
action bar enabled. How to request such a topic depends on the minimum supported version of your app. This lesson is divided into two chapters based on your minimum supported Android version.
Only Android 3.0 and above are supported
From Android 3.0 (API level 11), the action bar is included in all the activities using Theme. Holo themes (or one of its descendan
Android project to facilitate code debugging.
You can follow '1' and '2' to add Android Framework support.
Add a breakpoint in the code, select 'run'-> 'Attach debugger to Android process', or directly click the icon shown in
In the displayed Choose Process dialog box, select all processes, select the Process where the code to DEBUG resides, and click OK.
Vi. O
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