Ideas:
The first scenario: shielding other keys except power, shielding the status bar dropdown, shielding the touch screen.
The code is as follows:
System Signature Required:
Add Permissions:
<uses-permission android:name= "Android.permission.STATUS_BAR"/>
<uses-permission android:name= "Android.permission.EXPAND_STATUS_BAR"/>
Package Com.example.demo;
Import android.app.Activity;
Import Android.os.Bundle;
Import android.view.KeyEvent;
Import Android.view.Menu;
Import Android.util.Log;
Import Android.view.Window;
Import Android.view.WindowManager;
Import Android.app.StatusBarManager;
Import android.view.MotionEvent;
public class Mainactivity extends Activity {
public static final int flag_homekey_dispatched = 0x80000000;
Private Statusbarmanager Mstatusbarmanager;
@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Requestwindowfeature (Window.feature_no_title);
GetWindow (). Addflags (WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
GetWindow (). Addflags (flag_homekey_dispatched); Prohibit Home
Disablestatusbar ();//Prohibit status bar
Setcontentview (R.layout.activity_main);
}
@Override
public boolean Oncreateoptionsmenu (Menu menu) {
Inflate the menu; This adds items to the action bar if it is present.
Getmenuinflater (). Inflate (R.menu.main, menu);
return true;
}
@Override
public boolean ontouchevent (Motionevent event) {
TODO auto-generated Method Stub
return true;
}
private void Disablestatusbar () {
Whether the first sentence can be proposed to
Mstatusbarmanager = (Statusbarmanager) This.getsystemservice (this. Status_bar_service);
Mstatusbarmanager.disable (Statusbarmanager.disable_expand);
}
@Override
public boolean onKeyDown (int keycode, keyevent event) {
TODO auto-generated Method Stub
Switch (keycode) {
Case Keyevent.keycode_volume_down:
Case KEYEVENT.KEYCODE_VOLUME_UP:
Case Keyevent.keycode_home:
return true;
Default
Break
}
Return Super.onkeydown (KeyCode, event);
}
@Override
public boolean onkeylongpress (int keycode, keyevent event) {
TODO auto-generated Method Stub
Switch (keycode) {
Case Keyevent.keycode_volume_down:
Case KEYEVENT.KEYCODE_VOLUME_UP:
Case Keyevent.keycode_home:
return true;
Default
Break
}
Return super.onkeylongpress (KeyCode, event);
}
@Override
public void onbackpressed () {
TODO auto-generated Method Stub
Super.onbackpressed ();
}
}
This way, you can simulate all operations except power.
2:
Above behavior, can not block power, the following scheme to achieve shielding power
The AM command operation is used here.
Specific operation: Enter the cmd input adb shell into the terminal
Am Hang can.
3: Use APK to implement the AM Command scheme:
RunCommand ("Am Hang");
Private Boolean RunCommand (String command) {
Java.lang.Process Process = null;
try {
Process = Runtime.getruntime (). exec (command);
LOG.I ("Lxm", "Runtime");
Process.waitfor ();
} catch (Exception e) {
E.printstacktrace ();
LOG.I ("Lxm", "error");
return false;
} finally {
try {
Process.destroy ();
} catch (Exception e) {
}
}
LOG.I ("Lxm", "finally");
return true;
}
You need to add permissions:
<uses-permission android:name= "Android.permission.SET_ACTIVITY_WATCHER"/>
The specific code can see the Hang function inside the Activitymanagerserver.java.
4: Full APK source code is:
Androidmanifest.xml
<?xml version= "1.0" encoding= "Utf-8"?>
<manifest xmlns:android= "Http://schemas.android.com/apk/res/android"
Package= "Com.example.demo"
Android:versioncode= "1"
Android:versionname= "1.0" >
<uses-sdk
Android:minsdkversion= "8"
Android:targetsdkversion= "/>"
<uses-permission android:name= "Android.permission.STATUS_BAR"/>
<uses-permission android:name= "Android.permission.EXPAND_STATUS_BAR"/>
<uses-permission android:name= "Android.permission.SET_ACTIVITY_WATCHER"/>
<application
Android:allowbackup= "true"
android:icon= "@drawable/ic_launcher"
Android:label= "@string/hello_world"
android:screenorientation= "Portrait"
Android:theme= "@style/apptheme" >
<activity
Android:name= "Com.example.demo.MainActivity"
Android:label= "@string/app_name" >
<intent-filter>
<action android:name= "Android.intent.action.MAIN"/>
<category android:name= "Android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
Mainactivity.java
Package Com.example.demo;
Import android.app.Activity;
Import Android.os.Bundle;
Import android.view.KeyEvent;
Import Android.view.Menu;
Import Android.util.Log;
Import Android.view.Window;
Import Android.view.WindowManager;
Import Android.app.StatusBarManager;
Import android.view.MotionEvent;
public class Mainactivity extends Activity {
public static final int flag_homekey_dispatched = 0x80000000;
Private Statusbarmanager Mstatusbarmanager;
@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Requestwindowfeature (Window.feature_no_title);
GetWindow (). Addflags (WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
GetWindow (). Addflags (flag_homekey_dispatched);
Disablestatusbar ();
Setcontentview (R.layout.activity_main);
Java.lang.Process Process = null;
RunCommand ("Am Hang");
}
Private Boolean RunCommand (String command) {
Java.lang.Process Process = null;
try {
Process = Runtime.getruntime (). exec (command);
LOG.I ("Lxm", "Runtime");
Process.waitfor ();
} catch (Exception e) {
E.printstacktrace ();
LOG.I ("Lxm", "error");
return false;
} finally {
try {
Process.destroy ();
} catch (Exception e) {
}
}
LOG.I ("Lxm", "finally");
return true;
}
@Override
public boolean Oncreateoptionsmenu (Menu menu) {
Inflate the menu; This adds items to the action bar if it is present.
Getmenuinflater (). Inflate (R.menu.main, menu);
return true;
}
@Override
public boolean ontouchevent (Motionevent event) {
TODO auto-generated Method Stub
return true;
}
private void Disablestatusbar () {
Whether the first sentence can be proposed to
Mstatusbarmanager = (Statusbarmanager) This.getsystemservice (this. Status_bar_service);
Mstatusbarmanager.disable (Statusbarmanager.disable_expand);
}
@Override
public boolean onKeyDown (int keycode, keyevent event) {
TODO auto-generated Method Stub
Switch (keycode) {
Case Keyevent.keycode_volume_down:
Case KEYEVENT.KEYCODE_VOLUME_UP:
Case Keyevent.keycode_home:
return true;
Default
Break
}
Return Super.onkeydown (KeyCode, event);
}
@Override
public boolean onkeylongpress (int keycode, keyevent event) {
TODO auto-generated Method Stub
Switch (keycode) {
Case Keyevent.keycode_volume_down:
Case KEYEVENT.KEYCODE_VOLUME_UP:
Case Keyevent.keycode_home:
return true;
Default
Break
}
Return super.onkeylongpress (KeyCode, event);
}
@Override
public void onbackpressed () {
TODO auto-generated Method Stub
Super.onbackpressed ();
}
}
ANDROID.MK is:
Local_path:= $ (call My-dir)
Include $ (clear_vars)
Local_module_tags: = Optional
Local_src_files: = $ (call All-java-files-under, SRC)
#LOCAL_STATIC_JAVA_LIBRARIES: = Com.android.phone.common
Local_package_name: = Frozen
Local_certificate: = Platform
#LOCAL_PROGUARD_FLAG_FILES: = Proguard.flags
Include $ (build_package)
# Use the folloing include to make our test apk.
Include $ (call all-makefiles-under,$ (Local_path))
Android Analog freeze Screen code implementation
