1 principle
Android has three kinds of screen unlock protection: pattern unlock, pin password unlock and unlock password.
The interface is as follows:
Diagram 1 Pattern Unlock interface
Chart 2 pin password
Start
The SIM card and status are obtained when the wireless module is initialized during startup. After Initialization is complete, call the VM. systemready () function to notify the corresponding lockscreen to unlock.
In the hardware/RIL/reference-RIL/reference-ril.c:
Setradiostate (radio_state_sim_not_ready) is used to trigger the initialization of the wireless module.
Initialize the wireless module through staticvoid onradiopoweron.
First, pol
Android App Digital Lock
Recently took time to do the following digital unlock function, the phone has digital unlock, app can also do, to avoid some of the application of privacy leakage, is to achieve the effect of the map:
Preface: These two days the boss gave a task, said is to do a copy of iOS Digital lock screen interface, thought that this thing onli
Android phones unlock screen lock settings
Open settings, enter location and security
Select Set screen lock, then select pattern
Then draw the unlock pattern, repeat two times to draw, you can draw according to their own requirements, but I want to keep in mind OH
After the confirmation, it has been set up oh, back to the main interface, and then lock
On the android unlock page, plug in USB to open the USB storage settings page. Press the HOME Key/Return key to directly return to launcher, instead of sliding the screen lock page.1) If you disable setting -- developer options -- USB debugging disable, it indicates that the current user mode is used, and USB is inserted under the screen lock interface, AMS calls the USB storageactivity "Open USB storage de
1 Principle
Android has three screen unlocking protections: Pattern unlocking, PIN password unlocking, and password unlocking.
The interface is as follows:
Chart 1 pattern unlocking page
Figure 2 PIN password unlock page
Figure 3 password unlock page
We can use java. lang. object. android. app. keyguardLock, a subcl
Given an Android 3x3 key lock screens and integers m and n, where 1≤m≤n≤9, count the T Otal number of unlock patterns of the Android lock screen, which consist of minimum of m keys and maximum n
keys.Rules for a valid pattern:
Each of the pattern must connect at least m keys and at the most n keys.
All the keys must is distinct.
If the line
When an Android phone (which should be the case for all mobile phones) receives a text message or call, the screen is automatically lit and the screen lock is unlocked for immediate operation, the following code is used to implement this function:Keyguardmanager Km = (keyguardmanager) getsystemservice (context. keyguard_service );
// Obtain the key lock manager object
Keyguardlock KL = km. newkeyguardlock ("unloc
Android implementation of nine Sudoku pattern unlock, with the pattern into a digital password function, the code is as follows:
Lockpatternview.java
Package Com.jackie.lockpattern;
Import Android.content.Context;
Import Android.graphics.Canvas;
Import Android.graphics.Paint;
Import Android.graphics.Point;
Import Android.text.TextUtils;
Import Android.util.AttributeSet;
Import Android.util.Type
The most recently done project is to collect and send the voice in real time, the other side receives and plays the correlation in real time, the following records the implementation of the core code.Many Android developers should know that Android has a Mediarecorder object and a MediaPlayer object for recording and playing audio. The disadvantage is that they c
Asynctaskloader time is being used. When the phone is unlocked, repeat the load data, code, as follows:Static class Couponshopqueryloader extendsasynctaskloaderAt this time, very strange phenomenon is out, each phone unlocked, the data will be repeated, repeatedly loaded. After consulting Cursorloader source code found that the original is too tender, loader use. There is no strict adherence to the Android official Help documentation for how the demo
Steps for adjusting the voice of a mobile phone in Android:
A. Obtain the Sound Manager through the System Service:
AudioManager audioManager = (AudioManager) getSystemService (Service. AUDIO_SERVICE );
B. Call appropriate methods as needed: (common methods)
AudioManager. adjustStreamVolume (int streamType, int direction, int flags );
StreamType: Specifies the sound type, which can be STREAM_VOICE_CALL
Android Wear performs voice interaction on Wearable devices
Receive voice input in notification
If you create a notification on your mobile phone that includes a behavior, such as an action such as replying to an email, an activity usually appears for the user to input, but then in the wearable device, there is no keyboard for users to use. Therefore, RemoteInp
Android custom controls slide to unlock the nine CellsOverview:
Analysis of sliding and unlocking the jiugongge:1. custom controls are required;2. You need to override the event onTouchEvent ();3. You need to set the sequence number and coordinates for the nine points. Here you can use the Map class;4. You need to determine whether to slide to one of the nine points and store the serial numbers of the slidi
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