Preface
This chapter describes the developer Guide/Android Basics/What is Android ?, The version is Android3.0 r1, which is translated and reproduced from: "gansc23". Thanks again "gansc23 "! We look forward to your participation in translation of
WebService is a SOAP-based Remote Call standard. It integrates different operating system platforms, languages, and technologies. The Android SDK does not provide a library to call WebService. Therefore, you must use a third-party SDK to call
When an Android program is started for the first time, Android automatically creates a thread called "main" main thread. This main thread (also called the UI thread) is very important because it is responsible for dispatching events to corresponding
I recently saw an article on the Internet about how to use requestWindowFeature () in android windows.
RequestWindowFeature (Window. FEATURE_LEFT_ICON );SetContentView (R. layout. dialog_activity );GetWindow (). setFeatureDrawableResource (Window.
The ownership of the Activity, that is, the adsorption relationship between the Activity and the Task in which the Activity should be located. We know that in general, in the same application, all started activities are in the same Task, and they
To read security-sensitive items, the program must declare relevant permission requests in androidmanifest. xml. The various permissions are described as follows:
Android. permission. ACCESS_CHECKIN_PROPERTIES
Allow read/write access to the
Styles. xml style: Style. xml Code Use the upper interface class of AlertDialog: Java codeDialog reNameDialog = new Dialog (getContext (), R. style. FullScreenDialog );LayoutInflater mLayoutInflater = (LayoutInflater) getContext (). getSystemService
A few days ago, I made an Android project. The engine layer uses C to write articles about this category, I would like to share with my friends my experience with NDK and my summary and notes on my knowledge. I hope to provide some help to those who
Today, if you want to temporarily disable the buttons, you can press them only when certain conditions are met. At first, I thought it was setClickable.
Please refer to the manual:
[Java]Public void setClickable (boolean clickable) Since: API Level 1
The following design guidelines are designed to enable the Android user experience team to maintain the best user experience. Integrate them into your creativity as your design philosophy, rather than intentionally using them.
Attract meTry to
In android, AlertDialog is often used to display the dialog box. This dialog box is displayed in the center of the screen. However, in some programs, the dialog box must be displayed in different locations. For example, the upper or lower part of
ListView. setOnScrollListener (new OnScrollListener (){@ OverridePublic void onScrollStateChanged (AbsListView view, int scrollState ){// When not scrollingIf (scrollState = OnScrollListener. SCROLL_STATE_IDLE ){// Determine whether to scroll to the
Process entry ProgressBar can be used to display the current progress of an operation (such as downloading an object). The application can change the length of a process entry based on the Operation progress. The process bar in Android also supports
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In this example, two layers of LinearLayout nesting are used:
In turn will point to a text view inside of it->Android: orientation = "vertical"Android: baselineAlignedChildIndex = "1 ″Android:
In Android development, we often need to know the version information of the current application. You can perform automatic upgrade judgment. Extended Custom data meta-data. How can we obtain this information in AndroidManifest. xml?
The following
Close the keypadInputMethodManager imm = (InputMethodManager) getSystemService (Context. INPUT_METHOD_SERVICE );Imm. hideSoftInputFromWindow (myEdit. getWindowToken (), 0 );
The following methods can be used to restore the display:
Boolean
ProgressBar provides a visual feedback when executing some tasks that are being processed. For example, you need to update the download status after downloading data from the web server. In this case, ProgressBar is a good choice. The following
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[Java]Public void getAndRefreshLocation (GeoPoint p ){Try {LogUtil. I ("ReviewPositionUI", "Lat =" + p. getLatitudeE6 () + "= Long =" + p. getLongitudeE6 ());Double lat = (double) p. getLatitudeE6
This example introduces layout_weight usage. layout_weight usage has been described earlier: for example, Android ApiDemos example resolution (147): Views-> Layouts-> LinearLayout-> 7. Fill Parent
And Android ApiDemos example resolution (143):
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