Android hides the taskbar systemui systembar in full screen

Let's talk about our experiences:

(1) start to hide systemui by using the kill com. Android. systemui thread, but there is always a com. Android. systemui. systemuiservice to start

At first, I got a listener that detected and killed every 500 milliseconds.

 

Code:

@ Overridepublic void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); activitymanager AM = (activitymanager) getsystemservice (context. activity_service); // obtain the activity management list <runningappprocessinfo> Infos = aM. getrunningappprocesses (); For (runningappprocessinfo: Infos) {system. out. println ("processname: =========================:" + runningappprocessinfo. processname); If (runningappprocessinfo. processname. equals ("com. android. systemui ") {system. out. println ("processpid:" + runningappprocessinfo. PID); string STR = "/system/bin/kill" + runningappprocessinfo. PID; system. out. println ("str:" + Str); process; runtime; try {runtime = runtime. getruntime (); process = runtime.exe C ("Su"); system. out. println ("01010101010"); process = runtime.exe C (STR); int exitval = process. waitfor (); system. out. println ("66666666666666666666666"); break;} catch (ioexception e) {system. out. println (E);} catch (interruptedexception e) {// todo auto-generated catch blocke. printstacktrace ();}

 

(2)after studying systemui.apk for a long time, I want to operate on it. After I delete the thread, systeui is still running. I will use the kill command to directly kill the thread and then start to report an error. The system UI cannot be found. It is annoying, but you can restart it. There is no such error.

Cangtian is really caring. I found a better method. It turned out to be like this: Transfer systemui.apk to a folder and restart the service com. systemui. systemuiservice.

You can. If you want to recover, move systemui.apk to/system/APP/and restart the service com. systemui. systemuiservice.

Code reference:

 File systemUIapkFile = new File("/system/app/SystemUI.apk");        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                final ToggleButton systemBarToggleButton = (ToggleButton) findViewById(R.id.systemBarToggleButton);        systemBarToggleButton.setChecked(systemUIapkFile.exists());        systemBarToggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener() {            @Override            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {                systemBarToggleButton.setChecked(isChecked);                switchSystemUI();                if (isChecked) {                    Intent intent = new Intent();                    intent.setComponent(new ComponentName(                            "com.android.systemui",                            "com.android.systemui.SystemUIService"));                    startService(intent);                }            }        });    }        private void switchSystemUI() {        try {            Process p;            p = Runtime.getRuntime().exec("su");            // Attempt to write a file to a root-only            DataOutputStream os = new DataOutputStream(p.getOutputStream());            os.writeBytes("mount -o remount,rw /dev/block/stl6 /system\n");            if (systemUIapkFile.exists()) {                os.writeBytes("mv /system/app/SystemUI.apk /system/SystemUI.apk\n");            }else {                os.writeBytes("mv /system/SystemUI.apk /system/app/SystemUI.apk\n");            }            os.writeBytes("mount -o remount,ro /dev/block/stl6 /system\n");            // Close the terminal            os.writeBytes("exit\n");            os.flush();            p.waitFor();        } catch (Exception e) {            ShowErrorGlobal(e);        }    }        protected void ShowErrorGlobal(Exception e) {        ByteArrayOutputStream baos = new ByteArrayOutputStream();        PrintStream stream = new PrintStream(baos);        e.printStackTrace(stream);        stream.flush();        new AlertDialog.Builder(this)                .setIconAttribute(android.R.attr.alertDialogIcon)                .setTitle("Epic fail")                .setMessage("Error: " + new String(baos.toByteArray())).show();    }

(3)

This is even more awesome. Both are the same path. What Google provides us with is an interface that can be used directly.

Direct code reference:

int flag = context.getWindow().getDecorView().getSystemUiVisibility();//int fullScreen = View.SYSTEM_UI_FLAG_SHOW_FULLSCREEN;int fullScreen = 0x8;if(visible) {if((flag & fullScreen) != 0) {context.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);}} else {if((flag & fullScreen) == 0) {context.getWindow().getDecorView().setSystemUiVisibility(flag | fullScreen);}}

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Source code