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Using the Arm-eabi-addr2line tool to track the Android call stack
Author: Liangshengyang
Turn from: http://www.linuxidc.com/Linux/2011-01/31803.htm
In the usual C + + code, response can be made by responding to segmentation fault errors caused by improper memory operation, namely Signal SIGSEGV (11). As long as you set the SIGSEGV in the program handler, call t
is equivalent to assembling this fragment into an identity tag, if not previously added this fragment, namely Mfragmentmanager.findfragmentbytag (name) Return NULL, then call GetItem (position), get fragment, and add this fragment. Conversely, that is, the fragment has been added before, it will not call GetItem (position), but directly attach on this fragment.ReferenceHttp://www.cnblogs.com/dancefire/arch
Previous useJavaCallMonkeyrunner(Http://www.cnblogs.com/nuliniaoboke/archive/2012/11/23/2784385.html) left a problem, that is, the last use of a lower version4To solve the problem, use a later versionJarHow to call a packageMonkeyrunnerWhat about it?
After a friend prompts me that the method of the higher version has changed, I searched the required classes online according to his prompt. After the test passed, summary of this supplementary article.
For several days did not write a blog, feel a little slack. The author participated in the second Software design contest for college students, these daysI've been working on the big game and didn't spend a lot of time organizing blogs. Fortunately, after a few days, the game has been pretty much the same.The next step is to take this time to learn something useful to do some summary.What you do today is the area clipping function that implements the image. Due to the need of the project functio
Android Automatic Sensormanager is easy to use, but in some cases we want to encapsulate the functionality:
Using only individual sensor, the function is relatively single
The raw data returned by the sensor will be processed by the algorithm to use the
Multiple frequent calls to disable sensor data in the program
Because the project needs to call the phone's direction information on m
due to the android:theme= "@android: Style/theme.notitlebar" on page A in androidmanifest.xml. The B-page does not have this parameter set. After adding this setting to B, the problem is resolved. Although the problem has been resolved, but has not been understood not set Android:theme= "@android: Style/theme.notitlebar" page, why the finish () can not immediately call
The APIs that have been being called recently are found to be unsuccessful and have been entangled for a long time. For more information, see tutorials and official documents, three steps are required.
1. Apply for App_ID
2. Enter the package name. 3,
Obtain the md5 value of the program signature,
You can call these three steps as long as you are correct, but you do not know that the keystore we pack is different from the md5 value of the program sign
Note: Most of the content in this article is reproduced from: newcj's blog, please respect others' labor achievements!
After writing"Android notification usage", We found several problems, especially setting the notification intent so that we can correctly call back the corresponding activity in the previous task that has been placed in the background like QQ or other programs, instead of creating a new ins
data from the webpage by this wayIt's no fun just to open it, and most importantly. We're going to pass the data, so how do we pass the data?We can use the above method to pass some data to the local app, so first we change the page. After the code changes:HTML> Head> Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8"> title>Insert Title heretitle> Head> Body> ahref= "M://my.com/?arg0=0arg1=1">Open appa>BR/> Body>HTML>(1). If you open this Web pag
The example in this article describes the Android call stack trace method. Share to everyone for your reference. Specifically as follows:
Android development, we also often encounter a segment error, that is, SIGSEGV (11), this time libc's backtrace will print out the corresponding stack information, and you see just a pair of numbers, it seems impossible to che
Call and send text messages on the simulator. You can also use the emulator control of the ADT plug-in of eclipse on the command line. The specific method is as follows.
Command line:
Assume that the port number of the simulator you are currently enabling (on the title bar of the simulator) is 5554.
1. Open the command line and enter Telnet localhost 5554 and press Enter. The following prompt is displayed, indicating that you have successfully connec
", Htmlsource);Savedinstancestate.putstring ("Msg_camera_picname", camera_picname);Super.onsaveinstancestate (savedinstancestate); Implement the parent class method to prevent the current activity from being returned after the last} Then, in the OnCreate (Bundle savedinstancestate) method, determine if savedinstancestate is NULL, NOT NULL, and read the last saved temporary variable value. The entire process in the simulator and other models of the Android
Recently done a project, mixed with Nativecode and HTML, in order to facilitate the JS call app some methods, unified encapsulation of a JS method, recorded as followsThe Android side first wants to webview in the Allow JS the callWebView Mywebview = (WebView) Findviewbyid (R.id.webview); WebSettings websettings = Mywebview.getsettings (); websettings.setjavascriptenabled (true); Mywebview.addjavascriptinte
1. OverviewWith the rapid display of mobile smart devices, battery life in a very large case induced the choice of mass consumers, Android system Power Management is reasonable or not directly affect the battery life, and battery system as part of it, Mainly used for monitoring the battery status (battery level, battery status and battery temperature, etc.). The following is a detailed analysis of Android's battery system architecture.2.
method is almost the same as the second one, just to change the method to filed and then output the field name.GetFields (): Gets the full permission modifier decorated fieldField Name = AgeField name = NameField Name = heightField Name = SchoolIn the fourth method, we obtain a detailed method based on the method name, and then pass in the argument. Invokes the method with Invoke.You must set Method.setaccessible (true) before calling again, and you can cal
();} #endifTest.cpp Note that these two pieces of code are changed in the previous code, and some of the code is not related to this feature. Please delete it yourself.#include "test.h" #include "cocos2d.h" #include "platform/android/jni/jnihelper.h" #include ". /.. /.. /classes/jnitest.h "#include 3) C + + layervoid Helloworld::menuclosecallback (ref* psender) {#if (Cc_target_platform = = cc_platform_android)// Showtipdialog ("Exit", "exit,really
Call camera in Android to get pictures can be obtained in two ways, first of all by invoking system services to open the cameraIntent Intent = new Intent (mediastore.action_image_capture);Startactivityforresult (Intent,requestcode);The first method is to get the picture from the result returned by Startactivityforresult, as follows: if (RESULTCODE==RESULT_OK) { if (requestcode==req_1) { Bundle
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