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android4.0.3去掉底部状态栏statusbar，全屏显示示例代码

發布時間：2023/12/10 编程问答 25 豆豆

生活随笔收集整理的這篇文章主要介紹了 android4.0.3去掉底部状态栏statusbar，全屏显示示例代码小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

要去掉android4.0上的狀態欄，全屏顯示的代碼如下：

1、將usleep和killall這二個文件放到assets文件夾下。這二個文件可在下面的附件中下載到。

2、創建Device.java（注：附件里有完整的代碼）:

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、然后在加載acitivity或你想全屏的activity中，加入以下代碼：

1	//當為true時，表示有底部狀態欄

2	Device.initialize(getApplicationContext());

3	Device device = Device.getInstance();

4	device.showSystembar(false);

總結

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