Http://www.cnblogs.com/xiaofeixiang/p/4086092.htmlIn general, there are two ways to run an Android app, one is to set up an Android virtual Device Emulator, to manage it via Android manger, and to plug in a USB cable directly on the real machine, but if the computer is configured to be low, Directly with the real machi
Activity tag, and add the following attributes to it:
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
Note that there is a space between it and other attributes before and after it.
Run your Qt on Android Application on the 2.x system. It is full screen and has no title bar.Android 4.x
After the Android system version reaches 4.0, the previous metho
the tab bar of 6 tabs in Layout-xlarge. If your app has the same layout on all devices, you don't have to consider layouts for different sizes. Those layout* folders can be seen, the application on the HDPI and XHDPI support the screen, and the layout of the screen is inconsistent, but does not consider the different sizes of devices using different layouts.Andr
. Android:orientation PropertiesThe Android:orientation property is a property of two linearlayout components that determines whether the component is placed horizontally or vertically . In the XML above, the root linearlayout is vertical and the sub-linearlayout is horizontal.The order in which the LinearLayout subcomponents are defined determines the order in which they appear on the screen. In a vertical linearlayout, the first defined subassembly
Android device requires the user to adapt to touch, input, shake, or even press the hardware keys from time to times. They need to identify styles such as input area, selection box, modal dialog box, and menu. Do you really want to add more burdens to them? Use a simple and intuitive list. In the app open screen, use large icons to present the main features. Add
Installation/configuration:Another tool can also test the performance of the mobile client app, which is the Ddms tool in the Android Development Kit (Dalvik Debug Monitor Service), first of all the installation of the Android SDK:1, first install jdk,1.5 above version2, after the installation of the JDK, you need to download and install the
In the previous example of Android Apidemo example parsing (9): App->activity->persistent state describes the use of shared preferences to store some states, shared A more general use of preferences is to store some application preferences (settings). Package Android.preference provides many classes that allow applications to display and set application-related preferences. Of course, you can use a custom U
Objective
This is the main implementation of an Android application, static broadcast, dynamic broadcast two ways to change the content of the widget, that is, in the blog on the basis of the experiment to modify, so the focus of this experiment is the realization of appwidget small parts ~
First, let's simply say what the widget is.
The application window widget (widget) is a tiny application view that can be embedded in other applications (such a
, the navicat has a sync function. A small bug.sql is estimated to be enclosed in single quotation marks. Then if there is a single quotation mark in the field, the error will be made. When it's in sync. Turn off the transaction. There are 10 of them that seem to be in trouble. But it should not be used. It takes a long time to transfer. It took about 3 hours. It's not too small. After you have a database. The rest is almost the same as backstage. Query the database.
8.WebView Research
There's
SDK Access (2) on Android Google play inside payment (In-app billing) Access
Next to the Android Facebook SDK access (1) after finishing the Facebook access process, you can then sort out the access process for Google Play in-app billing payments. Google Play is known as the official Google
Power Management Powermanagerpowermanager is a power management class for Android that manages power operations such as sleep, wake, restart, and adjust screen brightness.The PowerManager object is obtained from the system service Power_service, and its main methods are as follows:Gotosleep: Sleep, that is, lock screen.WakeUp: Wake up, that is, unlock.Reboot: Restart.There are several other hidden methods:G
picture became the first choice. Of course, with the improvement of technical specifications after the development, may later on the market xxdpi mobile phones will become more and more common. But this is something. What about design resource constraints?In today's app development, there are basically iOS and Android version numbers. Some companies are interacting with each other in order to keep the app'
android:anydensity= "false", the Android system will convert 320 (low density) to 320x480 (medium density), so the app will load the resources in the mdpi file on the small-density phone.Careful people will find that since android2.0 started drawable files are replaced by three folders drawable-hdpi,drawable-mdpi,drawable-ldpi three folders, some programmers in order to let the application load some pictur
Classification 1:
Figure 1 android screen size differentiation
If your program knows the screen of the android device, different layout schemes can be used according to different sizes. However, when we write a program, the layout in inches cannot be used, let's assume that we use pixel (px) for layout, but here we w
1 Screen-cutting interfaceIf you want the screen before Android5.0, you need to get the system root permission. But after Android5.0 Android opened the new interface android.media.projection, developers use this interface, third-party applications no longer need to obtain the system root privileges can also be directly screen
complies with the rule of ldpi: mdpi: hdpi: xhdpi: xxhdpi = 3: 4: 6: 8: 12.
If you make a 2x7 splitting material into a 9.png image, what if you want to make the thin lines 2px in different density instead of being scaled by Android? You can put the split line material in drawable-nodpi. The images in this resource folder will be displayed according to the actual pixel size, instead of being scaled by
| StatusBarManager.DISABLE_SYSTEM_INFO| StatusBarManager.DISABLE_NAVIGATION| StatusBarManager.DISABLE_CLOCK;
Full Screen:?
Code snippet, double-click Copy
01
mStatusBarManager.disable(hideMask);
Non-full screen:?
Code snippet, double-click Copy
01
mStatusBarManager.disable(StatusBarManager.DISABLE_NONE);
The above two sentences can be used to display/
sliding or sweep the test application, and then calculate the result by manual or program number frame method to get the frame rate.
Test for screen slide smoothness:Method is like frame rate test, the only difference is the difference of the final result calculation formula
Capture app frame rate (Android fluency fps test):1. Turn on the Mobile developer op
are supported by your screen can download your app. For different screen sizes, announcing support may also affect how the system attracts your application on a larger screen, specifically whether your application is running screen compatibility mode. to declare the applic
You only need to click the "screen rotation" button to close the screen switching. 1. Disable intra-APP horizontal and vertical screen switching. The above settings change the entire mobile phone's horizontal and vertical screen switching. If the mobile phone does not disabl
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