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android4.0.3去掉底部状态栏statusbar，全屏显示示例代码

2013-10-30 14:52 555 查看
要去掉android4.0上的状态栏，全屏显示的代码如下：

1、将usleep和killall这二个文件放到assets文件夹下。这二个文件可在下面的附件中下载到。

2、创建Device.java（注：附件里有完整的代码）:

001
import
java.io.BufferedInputStream;
002
import
java.io.BufferedReader;
003
import
java.io.DataOutputStream;
004
import
java.io.File;
005
import
java.io.FileNotFoundException;
006
import
java.io.FileOutputStream;
007
import
java.io.IOException;
008
import
java.io.InputStream;
009
import
java.io.InputStreamReader;
010
import
java.util.ArrayList;
011
import
java.util.Map;
012
013
import
android.content.Context;
014
import
android.content.res.AssetManager;
015
import
android.util.Log;
016
017
018
public
enum

Device {
019
020
INSTANCE;
021
022
private

static
 
String TAG = Device.
class
.getSimpleName();
023
024
private

boolean
 
mHasRootBeenChecked =

false
;
025
private

boolean
 
mIsDeviceRooted =

false
;
026
027
private

boolean
 
mHasBeenInitialized =

false
;
028
private

Context mAppContext =
null
;
029
030
private

boolean
 
mSystembarVisible =

true
;
031
032
static

public
 
void
 
initialize(Context appContext) {
033
if

(INSTANCE.mHasBeenInitialized ==
true
) {
034
Log.e(TAG,
"Initializing already initialized class "
 
+ TAG);
035
}
036
INSTANCE.mHasBeenInitialized =
true
;
037
INSTANCE.mAppContext = appContext;
038
AddKillAll(appContext,
"killall"
);
039
AddKillAll(appContext,
"usleep"
);
040
}
041
042
private

static
 
void
 
AddKillAll(Context appContext, String commandFileName) {
043
File killAllFile =
new
 
File(
"/system/xbin/"
+commandFileName);
044
if

(!killAllFile.exists()) {
045
AssetManager assetManager = appContext.getAssets();
046
InputStream inputStream =
null
;
047
String commandFilePath =
null
;
048
try

{
049
inputStream = assetManager.open(commandFileName);
050
commandFilePath = appContext.getApplicationContext().getFilesDir()
051
.getAbsolutePath() + File.separator + commandFileName;
052
saveToFile(commandFilePath, inputStream);
053
}
catch
 
(IOException e) {
054
Log.e(
"tag"
, e.toString());
055
}
056
try

{
057
Process p;
058
p = Runtime.getRuntime().exec(
"su"
);
059
DataOutputStream os =
new
 
DataOutputStream(p.getOutputStream());
060
os.writeBytes(
"mount -o remount,rw /dev/block/stl6 /system\n"
);
061
os.writeBytes(
"cd system/xbin\n"
);
062
os.writeBytes(
"cat "

+ commandFilePath +
" > "
 
+ commandFileName +
"\n"
);
063
os.writeBytes(
"chmod 755 "

+ commandFileName +
"\n"
);
064
os.writeBytes(
"mount -o remount,ro /dev/block/stl6 /system\n"
);
065
os.writeBytes(
"exit\n"
);
066
os.flush();
067
p.waitFor();
068
}
catch
 
(Exception e) {
069
Log.e(TAG, e.toString());
070
}
071
}
072
}
073
074
static

public
 
Device getInstance() {
075
INSTANCE.checkInitialized();
076
return

INSTANCE;
077
}
078
079
private

void
 
checkInitialized() {
080
if

(mHasBeenInitialized ==
false
)
081
throw

new
 
IllegalStateException(
"Singleton class "

+ TAG
082
+
" is not yet initialized"
);
083
}
084
085
public

boolean
 
isRooted() {
086
087
checkInitialized();
088
089
090
if

(mHasRootBeenChecked) {
091
return

mIsDeviceRooted;
092
}
093
094
try

{
095
File file =
new
 
File(
"/system/app/Superuser.apk"
);
096
if

(file.exists()) {
097
mHasRootBeenChecked =
true
;
098
mIsDeviceRooted =
true
;
099
return

true
;
100
}
101
}

catch
 
(Exception e) {
102
e.printStackTrace();
103
}
104
105
try

{
106
ArrayList<String> envlist =
new
 
ArrayList<String>();
107
Map<String, String> env = System.getenv();
108
for

(String envName : env.keySet()) {
109
envlist.add(envName +
"="
 
+ env.get(envName));
110
}
111
String[] envp = (String[]) envlist.toArray(
new

String[
0
]);
112
Process proc = Runtime.getRuntime()
113
.exec(
new

String[] {
"which"
,
"su"
 
}, envp);
114
BufferedReader in =
new
 
BufferedReader(
new

InputStreamReader(
115
proc.getInputStream()));
116
if

(in.readLine() !=
null
) {
117
mHasRootBeenChecked =
true
;
118
mIsDeviceRooted =
true
;
119
return

true
;
120
}
121
}

catch
 
(Exception e) {
122
e.printStackTrace();
123
}
124
125
mHasRootBeenChecked =
true
;
126
mIsDeviceRooted =
false
;
127
return

false
;
128
129
}
130
131
public

enum
 
AndroidVersion {
132
HC, ICS, JB, UNKNOWN
133
};
134
135
public

AndroidVersion getAndroidVersion() {
136
checkInitialized();
137
int

sdk = android.os.Build.VERSION.SDK_INT;
138
if

(
11
 
<= sdk && sdk <=
13
) {
139
return

AndroidVersion.HC;
140
}

else
 
if
 
(
14
 
<= sdk && sdk <=

15
) {
141
return

AndroidVersion.ICS;
142
}

else
 
if
 
(
16
 
== sdk) {
143
return

AndroidVersion.JB;
144
}

else
 
{
145
return

AndroidVersion.UNKNOWN;
146
}
147
}
148
149
public

void
 
showSystembar(
boolean

makeVisible) {
150
checkInitialized();
151
try

{
152
ArrayList<String> envlist =
new
 
ArrayList<String>();
153
Map<String, String> env = System.getenv();
154
for

(String envName : env.keySet()) {
155
envlist.add(envName +
"="
 
+ env.get(envName));
156
}
157
String[] envp = (String[]) envlist.toArray(
new

String[
0
]);
158
if

(makeVisible) {
159
String command;
160
Device dev = Device.getInstance();
161
if

(dev.getAndroidVersion() == AndroidVersion.HC) {
162
command =
"LD_LIBRARY_PATH=/vendor/lib:/system/lib am startservice -n com.android.systemui/.SystemUIService"
;
163
}
else
 
{
164
command =
"rm /sdcard/hidebar-lock\n"
165
+
"sleep 5\n"
166
+
"LD_LIBRARY_PATH=/vendor/lib:/system/lib am startservice -n com.android.systemui/.SystemUIService"
;
167
}
168
Runtime.getRuntime().exec(
new

String[] {
"su"
,
"-c"
, command }, envp);
169
mSystembarVisible =
true
;
170
}
else
 
{
171
String command;
172
Device dev = Device.getInstance();
173
if

(dev.getAndroidVersion() == AndroidVersion.HC) {
174
command =
"LD_LIBRARY_PATH=/vendor/lib:/system/lib service call activity 79 s16 com.android.systemui"
;
175
}
else
 
{
176
command =
"touch /sdcard/hidebar-lock\n"
177
+
"while [ -f /sdcard/hidebar-lock ]\n"
178
+
"do\n"
179
+
"killall com.android.systemui\n"
180
+
"usleep 500000\n"
181
+
"done\n"
182
+
"LD_LIBRARY_PATH=/vendor/lib:/system/lib am startservice -n com.android.systemui/.SystemUIService"
;
183
}
184
Runtime.getRuntime().exec(
new

String[] {
"su"
,
"-c"
, command }, envp);
185
mSystembarVisible =
false
;
186
}
187
}

catch
 
(Exception e) {
188
e.printStackTrace();
189
}
190
}
191
192
public

boolean
 
isSystembarVisible() {
193
checkInitialized();
194
return

mSystembarVisible;
195
}
196
197
public

void
 
sendBackEvent() {
198
try

{
199
ArrayList<String> envlist =
new
 
ArrayList<String>();
200
Map<String, String> env = System.getenv();
201
for

(String envName : env.keySet()) {
202
envlist.add(envName +
"="
 
+ env.get(envName));
203
}
204
String[] envp = (String[]) envlist.toArray(
new

String[
0
]);
205
Runtime.getRuntime().exec(
206
new

String[] {
"su"
,
"-c"
,
207
"LD_LIBRARY_PATH=/vendor/lib:/system/lib input keyevent 4"

},
208
envp);
209
}

catch
 
(Exception e) {
210
e.printStackTrace();
211
}
212
}
213
 
214
public

static
 
void
 
saveToFile(String filePath, InputStream in){
215
FileOutputStream fos =
null
;
216
BufferedInputStream bis =
null
;
217
int

BUFFER_SIZE =
1024
;
218
byte
[] buf =
new
 
byte
[BUFFER_SIZE];
219
int

size =
0
;
220
bis =
new
 
BufferedInputStream(in);
221
try

{
222
fos =
new
 
FileOutputStream(filePath);
223
while

((size =bis.read(buf)) != -
1
)
224
fos.write(buf,
0
, size);
225
}

catch
 
(FileNotFoundException e) {
226
e.printStackTrace();
227
}

catch
 
(IOException e) {
228
e.printStackTrace();
229
}

finally
 
{
230
try

{
231
if

(fos !=
null
) {
232
fos.close();
233
}
234
if

(bis !=
null
) {
235
bis.close();
236
}
237
}
catch
 
(IOException e) {
238
e.printStackTrace();
239
}
240
}
241
}
242
243
}
3、然后在加载acitivity或你想全屏的activity中，加入以下代码：

1
//当为true时，表示有底部状态栏
2
Device.initialize(getApplicationContext());
3
Device device = Device.getInstance();
4
device.showSystembar(
false
);

                                            

                                        

                        
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