ANDROID 隐藏 任务栏 systemui systembar 全屏显示

说说自己的经历吧：
（1）开始为了隐藏systemui利用过killcom.android.systemui线程进行的隐藏，但是总有一个com.android.systemui.SystemUIService进行启动
我开始还是比较的坏的就弄了一个监听每500毫秒进行检测一次进行查杀
代码：

[java]viewplaincopyprint?

@Override

publicvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

ActivityManageram=(ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);//获得activity管理

List<RunningAppProcessInfo>infos=am.getRunningAppProcesses();

for(RunningAppProcessInforunningAppProcessInfo:infos){

System.out.println("processName:====================:"+runningAppProcessInfo.processName);

if(runningAppProcessInfo.processName.equals("com.android.systemui")){

System.out.println("processpid:"+runningAppProcessInfo.pid);

Stringstr="/system/bin/kill"+runningAppProcessInfo.pid;

System.out.println("str:"+str);

Processprocess;

Runtimeruntime;

try{

runtime=Runtime.getRuntime();

process=runtime.exec("su");

System.out.println("01010101010");

process=runtime.exec(str);

intexitVal=process.waitFor();

System.out.println("66666666666666666666666");

break;

}catch(IOExceptione){

System.out.println(e);

}catch(InterruptedExceptione){

//TODOAuto-generatedcatchblock

e.printStackTrace();

}

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);// 获得activity管理

List<RunningAppProcessInfo> infos = am.getRunningAppProcesses();
for (RunningAppProcessInfo 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 process;
Runtime runtime;
try {
runtime = Runtime.getRuntime();
process = runtime.exec("su");
System.out.println("01010101010");
process = runtime.exec(str);
int exitVal = process.waitFor();
System.out.println("66666666666666666666666");
break;
} catch (IOException e) {
System.out.println(e);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

（2）通过长时间研究我研究到了SystemUI.apk，我就就想对这个东西进行操作了。开始我删除掉后，systeui还是运行着，我就用kill命令直接杀掉这个线程，然后就开始报错了。说找不到SystemUI什么的。及其的烦人，不过重新启动就可以了。就没有那个错误了。
苍天真的不负有心人，本人找到一个更好的方法，原来大概是这样的：通过命令移除SystemUI.apk放到一个文件夹中，然后重新启动com.systemui.SystemUIService这个服务
就可以了。如果想恢复就把SystemUI.apk移到/system/app/下并且重新启动com.systemui.SystemUIService这个服务
代码参照：

[java]viewplaincopyprint?

FilesystemUIapkFile=newFile("/system/app/SystemUI.apk");

@Override

publicvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

finalToggleButtonsystemBarToggleButton=(ToggleButton)findViewById(R.id.systemBarToggleButton);

systemBarToggleButton.setChecked(systemUIapkFile.exists());

systemBarToggleButton.setOnCheckedChangeListener(newOnCheckedChangeListener(){

@Override

publicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){

systemBarToggleButton.setChecked(isChecked);

switchSystemUI();

if(isChecked){

Intentintent=newIntent();

intent.setComponent(newComponentName(

"com.android.systemui",

"com.android.systemui.SystemUIService"));

startService(intent);

}

}

});

}

privatevoidswitchSystemUI(){

try{

Processp;

p=Runtime.getRuntime().exec("su");

//Attempttowriteafiletoaroot-only

DataOutputStreamos=newDataOutputStream(p.getOutputStream());

os.writeBytes("mount-oremount,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-oremount,ro/dev/block/stl6/system\n");

//Closetheterminal

os.writeBytes("exit\n");

os.flush();

p.waitFor();

}catch(Exceptione){

ShowErrorGlobal(e);

}

}

protectedvoidShowErrorGlobal(Exceptione){

ByteArrayOutputStreambaos=newByteArrayOutputStream();

PrintStreamstream=newPrintStream(baos);

e.printStackTrace(stream);

stream.flush();

newAlertDialog.Builder(this)

.setIconAttribute(android.R.attr.alertDialogIcon)

.setTitle("Epicfail")

.setMessage("Error:"+newString(baos.toByteArray())).show();

}

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）
这种更牛逼，什么还自己通过命令操作。都是也路子。人家google给咱提供的有接口直接用就行啊
直接代码参考吧：

[java]viewplaincopyprint?

intflag=context.getWindow().getDecorView().getSystemUiVisibility();

//intfullScreen=View.SYSTEM_UI_FLAG_SHOW_FULLSCREEN;

intfullScreen=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);

}

}