ambient listening android

Android EditText listening allows users to enter only two decimal places, androidedittext Recently, you need to enter the price, but you do not want to input too many values after the decimal point, so I encapsulated one. When the user inputs the decimal point, the number of digits after the decimal point is monitored. If the number is greater than two digits, it is immediately deleted. It is encapsulated a

MainActivity is as follows: Package cc. testhome; import cc. testhome. homeKeyObserver. onHomeKeyListener; import cc. testhome. powerKeyObserver. onPowerKeyListener; import android. OS. bundle; import android. app. activity;/*** Demo Description: * use the Home Key press and long press the Home Key of the broadcast listener * press the power key of the broadcast listener (close the screen) ** reference: * 1

Get the home button press message under AndroidUnder Android, it is not possible to intercept the home key message through events such as onkeydown, for reasons that have been explicitly stated in the Android documentationTranslation will not do, in short, the app can not intercept the Home button event (there was a high man in the 2.3 below the system, using the method to intercept home, but after 4.0 has

Learn and develop at the beginning. Please correct the error Recently, I encountered a problem where parameter passing is required for Android listening events in the project. For example, in ListView, some variable data has a CheckBox, which should be displayed at the bottom by clicking the check box. Therefore, some parameters need to be included to control the setOnClickListener event. The last thought i

If you don't have access to a third-party input device, click the button and then just find your buttons and then:Button.performclick ();You can do it.So if you use a third-party input method, there are times when listening is not so easy:The following scenarios are:External input service, just throw me a string of characters, I get the character after the Execute button eventThe code is as follows:edittext1.addtextchangedlistener (Newtextwatcher () {

This project is an Android-based in-car environment music player, from the UI can be seen professional art design, interface layout and background is very textured user experience is very good, because the project is considering the car environment, so all the functions are mainly using gesture operation. Open the app to enter the four-screen boot interface, the main interface can accept the upper and lower left and right four gesture operation and ha

This article describes the Android implementation of the method of listening to phone call status. Share to everyone for your reference. Specifically as follows: To add permissions in the manifest file Androidmanifest.xml: Copy Code code as follows: The Java code is as follows: Access to telephone service telephonymanager Telmanager = (telephonymanager) getsystemservice (context.telephony_

Android custom View: Writing Custom listening events in observer mode and writing common vertical letter index ColumnsOverview: Currently, vertical index columns are still very popular, and are used by various common software such as Meituan and mobile phone address book.Demo Write a custom View and use the observer mode to customize click events. Public class MySlider extends View {private int width; priva

I have checked a lot of Gallery methods on the Internet to stop listening to the location. They are all determined by starting a thread and then sleeping. I don't think it is necessary to open a thread, consume resources, and raise your hand. When I accidentally saw the source code of the image library, I saw a piece of code, packages \ apps \ Gallery \ src \ com \ android \ camera \ ViewImage. java. 12MHa

Android gesture listening (GestureDetector class) Public class GestureTest extends Activity implements OnClickListener, OnGestureListener {// defines the GestureDetector detector of the gesture detector instance; @ Overridepublic void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity10_layout); // create a gesture detector = new GestureDetecto

Activity_main:android:orientation= "vertical" android:layout_width= "match_parent"android:layout_height= "Match_parent" >Android:id= "@+id/tv"Android:layout_width= "Wrap_content"android:layout_height= "Wrap_content"android:text= "@string/app_name"Android:textsize= "30DP"android:layout_gravity= "Center"android:layout_margintop= "20DP"/>Android:id= "@+id/btnstart"Android:layout_width= "Match_parent"android:layout_height= "Wrap_content"android:layout_margintop= "20DP"android:text= "@string/hello_wo

); Shader Mrectpaint.setshader (mlineargradient) added to the brush; @Override protected void OnDraw (Canvas Canvas) {Super.ondraw (Canvas); double mrandom; float currentheight; for (int i = 0; i Complete code for the layout file: The above is a small series to introduce the Android audio bar effect (imitation audio animation without listening to audio input), I hope to help you, if you h

Android Basics Getting Started tutorial--3.5 listening to edittext content changestags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:In the previous section we have learned the EditText control, how to listen to the contents of the input box changes!This re-practical development is very practical, in addition, with the nex

Android phone listening applets (for learning only ), To write this applet, you must first understand how the background services of Android are implemented. Service is one of the four major components of Android.Secondly, you need to understand the process management of Android. Although the program is invisible afte

MainActivity is as follows: Package CN. testappaddandremove; import android. OS. bundle; import android. app. activity; import android. content. intentfilter;/*** demo Description: * use a broadcast listening device to install and uninstall an application ** reference: * http://blog.csdn.net/wangjinyu501/article/detail

Requirement: Set an android Application to start a service when it is started. This service is used to listen for switching in the context mode. First, you must know that the launch program in android is implemented through the broadcast mechanism. After the android mobile phone is started, the system will sendAndroid. intent. action. BOOT_COMPLETEDSo we only nee

Android Network Programming-using HttpClient to batch upload files (2) AsyncTask + HttpClient and implement upload progress listening Please respect the fruits of others' work, and repost them with the source:Android Network Programming-using HttpClient to batch upload files (2) AsyncTask + HttpClient and implement upload progress listening Run: I once introdu

Android development-listening for mobile phone calls TelephonyManager is a service class that manages the call status and network information of a mobile phone. It provides a large number of getXxx () methods to obtain information about the telephone network. For details about TelephonyManager, refer to Android development to obtain SIM card information of mobile

Broadcast listening for Android boot and Shutdown Android boot and shutdown broadcast listening I. Boot broadcast Listening 1. register and receive the boot broadcast in the AndroidManifest. xml file

1. Description After the Android phone is turned on, the broadcast android. intent. action. BOOT_COMPLETED will be sent, and the broadcast will be listened on. 2. Code public class BootupReceiver extends BroadcastReceiver { private final String ACTION_BOOT = "android.intent.action.BOOT_COMPLETED"; @Override public void onReceive(Context context, Intent intent) { if (ACTION_BOOT.equals(