targetsdkversion

Graphics can be rendered in two categories: software rendering and hardware rendering. Software rendering relies on the CPU to calculate various coordinates and draw, mainly to occupy memory, hardware rendering is GPU-based, mainly video memory, the general 3D graphics programs (OpenGL, DirectX) are GPU-accelerated.Before Android3.0, the 2D drawing API only supported software rendering mode, starting with Android3.0, 2D drawing API began to support GPU hardware rendering, that is, canvas drawing

of a Java object injected with WebView, using this method in a WebView containing untrusted content, allowing an attacker to tamper with the host application and execute Java code with the privileges of the host application. Therefore, after 4.2, any interface for JS exposure needs to be added@JavascriptInterfaceComment so that the fields of this Java object will not be allowed to be accessed by JS.Official Document Description:From the Android 4.2 documentation:Caution:if you ' ve set your

ValueNBSP; adjust_mute or adjust_unmute . 7. Text SelectionWhen the users select text in your app, you can now display text selection actions such as Cut, Copy , and Paste in a floating toolbar 8. Android Keystore ChangesWith this preview, the Android Keystore provider no longer supports DSA. ECDSA is still supported. 9. Wi-Fi and Networking changesThis preview introduces the following behavior changes to the Wi-Fi and networking APIs. Your apps can now, the state of WifiCo

1. Description of the problem:Operation Error:12-25 13:35:32.286:e/trace (1202): Error opening Trace file:no such file or directory (2)Note: Although the error, but the program can still run .....2. Problem Analysis:(1) Some of the online statements:Many people will encounter this error when writing Android code, literally "No such file or directory"Many people do not understand why the system will prompt such a mistake? Obviously there is. in fact, the system is not found files or directories !

the native code in Nativefinishinit () * were rationalized with Zygote star tup.Does this function seem familiar? Yes, in the "Zygote process" 2 "--zygote Division" we've seen that the zygote process calls this method to process the creation of a subprocess when it receives a request to create a process activitymanagerservice request. private static void Applicationinit (int targetsdkversion, string[] argv) throws Zygoteinit.methodandargscal ler {

, secondary text is 54% transparent, and more minor explanatory text can be 26% transparent. For text that you want to highlight or click, use strong tones. Different levels of views can be highlighted by shading. For areas with operations and content highlighting, you can use CardView for isolation, and for areas where content is less important or operates in a single area, you can use split lines for isolation.For more information, see the Material Design documentation:Chinese version of websi

(); private static Message sPool; private static int sPoolSize = 0; private static final int MAX_POOL_SIZE = 50; private static boolean gCheckRecycle = true; The Code clearly shows that the data structure of the Message Pool is actually a linked list. SPool is a global message pool. sPoolSize records the length of the linked list. MAX_POOL_SIZE indicates that the maximum length of the linked list is 50.How to store messages in the Message Pool /** @hide */ public static void u

{baidustore {minSdkVersion 21 applicationId 'com. baudustore. test 'signingconfig signingConfigs. huangyanan targetSdkVersion 21 versionCode 1 versionname' 1. 0_baidu '} lestore {minSdkVersion 21 applicationId' test. lestore. test 'signingconfig signingConfigs. huangyn1 targetSdkVersion 21 versionCode 1 versionname' 1. 0_lestore '}}}...... Omitted ...... In this case, different package names correspond to

Android mobile GUARD 1-implement the splash page and androidsplash 1. What are the differences between minSdkVersion, targetSdkVersion, maxSdkVersion, and target API level? MinSdkVersion: maxSdkVersion is the lowest sdk version and the highest sdk version supported by the project. Before installing the apk, the system determines whether the current system can be installed. Generally, maxSdkVersion is not set. Target API level is the sdk version d

Before Android 3.0 (cellular), all Android phones had a special menu button. As a developer, you can use the menu buttons to display relevant content to users. Android 3.0 (cellular) removes the menu buttons and introduces the ActionBar class, which allows users to quickly call menus. In our future programs, we should try to avoid using menu buttons. It is best to use the ActionBar class. Using ActionBar is not a new concept, as early as Android 3.0 (cellular. You may be worried that the app wil

*/publicstaticintselectDefaultTheme (intcurTheme, inttargetSdkVersion) {returnselectSystemTheme (curTheme, targetSdkVersion, com. android. internal. r. style. theme, com. android. internal. r. style. theme_Holo, com. android. internal. r. style. theme_DeviceDefault);}/** @ hide */publicstaticintselectSystemTheme (intcurTheme, inttargetSdkVersion, intorig, intholo, intdeviceDefault) {// whether Theme if (curTheme! = 0) {returncurTheme;} // judge the v

Android: protectionLevel = normal> Next, we will experiment by specifying a BroadcastReceiver permission.First, two apps, app A and app B, are created;App A registers A BroadcastReceiver and app B sends messages.Menifest file of app:Xml Code Package = com. example. testbutton Android: versionCode = 1 Android: versionName = 1.0> Android: minSdkVersion = 7 Android: targetS