- public int convertDipOrPx(int dip) {
- float scale = MarketApplication.getMarketApplicationContext()
- .getResources().getDisplayMetrics().density;
- return (int) (dip * scale + 0.5f * (dip >= 0 ? 1 : -1));
- }
- getWindowManager()
- .addView(
- overlay,
- new WindowManager.LayoutParams(
- LayoutParams.WRAP_CONTENT,
- LayoutParams.WRAP_CONTENT,
- WindowManager.LayoutParams.TYPE_APPLICATION,
- WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
- | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
- PixelFormat.TRANSLUCENT));
- try {
- Field f = AbsListView.class.getDeclaredField("mFastScroller");
- f.setAccessible(true);
- Object o = f.get(listView);
- f = f.getType().getDeclaredField("mThumbDrawable");
- f.setAccessible(true);
- Drawable drawable = (Drawable) f.get(o);
- drawable = getResources().getDrawable(R.drawable.ic_launcher);
- f.set(o, drawable);
- Toast.makeText(this, f.getType().getName(), 1000).show();
- } catch (Exception e) {
- throw new RuntimeException(e);
- }
- /**
- * 网络是否可用
- *
- * @param context
- * @return
- */
- public static boolean isNetworkAvailable(Context context) {
- ConnectivityManager mgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
- NetworkInfo[] info = mgr.getAllNetworkInfo();
- if (info != null) {
- for (int i = 0; i < info.length; i++) {
- if (info[i].getState() == NetworkInfo.State.CONNECTED) {
- return true;
- }
- }
- }
- return false;
- }
方法二:
- /*
- * 判断网络连接是否已开 2012-08-20true 已打开 false 未打开
- */
- public static boolean isConn(Context context) {
- boolean bisConnFlag = false;
- ConnectivityManager conManager = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- NetworkInfo network = conManager.getActiveNetworkInfo();
- if (network != null) {
- bisConnFlag = conManager.getActiveNetworkInfo().isAvailable();
- }
- return bisConnFlag;
- }
- public static boolean isWifiActive(Context icontext) {
- Context context = icontext.getApplicationContext();
- ConnectivityManager connectivity = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- NetworkInfo[] info;
- if (connectivity != null) {
- info = connectivity.getAllNetworkInfo();
- if (info != null) {
- for (int i = 0; i < info.length; i++) {
- if (info[i].getTypeName().equals("WIFI")
- && info[i].isConnected()) {
- return true;
- }
- }
- }
- }
- return false;
- }
- /**
- * 网络方式检查
- */
- private static int netCheck(Context context) {
- ConnectivityManager conMan = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- State mobile = conMan.getNetworkInfo(ConnectivityManager.TYPE_MOBILE)
- .getState();
- State wifi = conMan.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
- .getState();
- if (wifi.equals(State.CONNECTED)) {
- return DO_WIFI;
- } else if (mobile.equals(State.CONNECTED)) {
- return DO_3G;
- } else {
- return NO_CONNECTION;
- }
- }
- public String getReallyFileName(String url) {
- StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
- .detectDiskReads().detectDiskWrites().detectNetwork() // 这里可以替换为detectAll()
- // 就包括了磁盘读写和网络I/O
- .penaltyLog() // 打印logcat,当然也可以定位到dropbox,通过文件保存相应的log
- .build());
- StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
- .detectLeakedSqlLiteObjects() // 探测SQLite数据库操作
- .penaltyLog() // 打印logcat
- .penaltyDeath().build());
- String filename = "";
- URL myURL;
- HttpURLConnection conn = null;
- if (url == null || url.length() < 1) {
- return null;
- }
- try {
- myURL = new URL(url);
- conn = (HttpURLConnection) myURL.openConnection();
- conn.connect();
- conn.getResponseCode();
- URL absUrl = conn.getURL();// 获得真实Url
- // 打印输出服务器Header信息
- // Map<String, List<String>> map = conn.getHeaderFields();
- // for (String str : map.keySet()) {
- // if (str != null) {
- // Log.e("H3c", str + map.get(str));
- // }
- // }
- filename = conn.getHeaderField("Content-Disposition");// 通过Content-Disposition获取文件名,这点跟服务器有关,需要灵活变通
- if (filename == null || filename.length() < 1) {
- filename = URLDecoder.decode(absUrl.getFile(), "UTF-8");
- }
- } catch (MalformedURLException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- if (conn != null) {
- conn.disconnect();
- conn = null;
- }
- }
- return filename;
- }
Resources转Bitmap
- public byte[] bmpToByteArray(final Bitmap bmp, final boolean needRecycle) {
- ByteArrayOutputStream output = new ByteArrayOutputStream();
- bmp.compress(CompressFormat.PNG, 100, output);
- if (needRecycle) {
- bmp.recycle();
- }
- byte[] result = output.toByteArray();
- try {
- output.close();
- } catch (Exception e) {
- e.printStackTrace();
- }
- return result;
- }
保存图片到SD卡
- public Bitmap loadBitmap(Resources res, int id) {
- BitmapFactory.Options opt = new BitmapFactory.Options();
- opt.inPreferredConfig = Bitmap.Config.RGB_565;
- opt.inPurgeable = true;
- opt.inInputShareable = true;
- InputStream is = res.openRawResource(id);// 获取资源图片
- return BitmapFactory.decodeStream(is, null, opt);
- }
- public void saveBitmapToFile(String url, String filePath) {
- File iconFile = new File(filePath);
- if (!iconFile.getParentFile().exists()) {
- iconFile.getParentFile().mkdirs();
- }
- if (iconFile.exists() && iconFile.length() > 0) {
- return;
- }
- FileOutputStream fos = null;
- InputStream is = null;
- try {
- fos = new FileOutputStream(filePath);
- is = new URL(url).openStream();
- int data = is.read();
- while (data != -1) {
- fos.write(data);
- data = is.read();
- }
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- try {
- if (is != null) {
- is.close();
- }
- if (fos != null) {
- fos.close();
- }
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- public boolean openApp(String packageName) {
- PackageInfo pi = null;
- try {
- pi = mPM.getPackageInfo(packageName, 0);
- } catch (NameNotFoundException e) {
- e.printStackTrace();
- return false;
- }
- if (pi == null) {
- return false;
- }
- Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
- resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
- resolveIntent.setPackage(pi.packageName);
- List<ResolveInfo> apps = mPM.queryIntentActivities(resolveIntent, 0);
- ResolveInfo ri = null;
- try {
- ri = apps.iterator().next();
- } catch (Exception e) {
- return true;
- }
- if (ri != null) {
- String tmpPackageName = ri.activityInfo.packageName;
- String className = ri.activityInfo.name;
- Intent intent = new Intent(Intent.ACTION_MAIN);
- intent.addCategory(Intent.CATEGORY_LAUNCHER);
- ComponentName cn = new ComponentName(tmpPackageName, className);
- intent.setComponent(cn);
- intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
- MarketApplication.getMarketApplicationContext().startActivity(
- intent);
- } else {
- return false;
- }
- return true;
- }
- public boolean checkApkExist(Context context, String packageName) {
- if (packageName == null || "".equals(packageName))
- return false;
- try {
- ApplicationInfo info = context.getPackageManager()
- .getApplicationInfo(packageName,
- PackageManager.GET_UNINSTALLED_PACKAGES);
- return true;
- } catch (NameNotFoundException e) {
- return false;
- } catch (NullPointerException e) {
- return false;
- }
- }
- public void installApk(Context context, String strFileAllName) {
- File file = new File(strFileAllName);
- Intent intent = new Intent();
- intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
- intent.setAction(Intent.ACTION_VIEW);
- String type = "application/vnd.android.package-archive";
- intent.setDataAndType(Uri.fromFile(file), type);
- context.startActivity(intent);
- }
- public void UninstallApk(Context context, String strPackageName) {
- Uri packageURI = Uri.parse("package:" + strPackageName);
- Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);
- context.startActivity(uninstallIntent);
- }
- public boolean CheckSD() {
- if (android.os.Environment.getExternalStorageState().equals(
- android.os.Environment.MEDIA_MOUNTED)) {
- return true;
- } else {
- return false;
- }
- }
- public void createShortCut(Context contxt) {
- // if (isInstallShortcut()) {// 如果已经创建了一次就不会再创建了
- // return;
- // }
- Intent sIntent = new Intent(Intent.ACTION_MAIN);
- sIntent.addCategory(Intent.CATEGORY_LAUNCHER);// 加入action,和category之后,程序卸载的时候才会主动将该快捷方式也卸载
- sIntent.setClass(contxt, Login.class);
- Intent installer = new Intent();
- installer.putExtra("duplicate", false);
- installer.putExtra("android.intent.extra.shortcut.INTENT", sIntent);
- installer.putExtra("android.intent.extra.shortcut.NAME", "名字");
- installer.putExtra("android.intent.extra.shortcut.ICON_RESOURCE",
- Intent.ShortcutIconResource
- .fromContext(contxt, R.drawable.icon));
- installer.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
- contxt.sendBroadcast(installer);
- }
- private boolean isInstallShortcut() {
- boolean isInstallShortcut = false;
- final ContentResolver cr = MarketApplication
- .getMarketApplicationContext().getContentResolver();
- String AUTHORITY = "com.android.launcher.settings";
- Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY
- + "/favorites?notify=true");
- Cursor c = cr.query(CONTENT_URI,
- new String[] { "title", "iconResource" }, "title=?",
- new String[] { "名字" }, null);
- if (c != null && c.getCount() > 0) {
- isInstallShortcut = true;
- }
- if (c != null) {
- c.close();
- }
- if (isInstallShortcut) {
- return isInstallShortcut;
- }
- AUTHORITY = "com.android.launcher2.settings";
- CONTENT_URI = Uri.parse("content://" + AUTHORITY
- + "/favorites?notify=true");
- c = cr.query(CONTENT_URI, new String[] { "title", "iconResource" },
- "title=?", new String[] { "名字" }, null);
- if (c != null && c.getCount() > 0) {
- isInstallShortcut = true;
- }
- if (c != null) {
- c.close();
- }
- AUTHORITY = "com.baidu.launcher";
- CONTENT_URI = Uri.parse("content://" + AUTHORITY
- + "/favorites?notify=true");
- c = cr.query(CONTENT_URI, new String[] { "title", "iconResource" },
- "title=?", new String[] { "名字" }, null);
- if (c != null && c.getCount() > 0) {
- isInstallShortcut = true;
- }
- if (c != null) {
- c.close();
- }
- return isInstallShortcut;
- }
- private String StringFilter(String str) throws PatternSyntaxException {
- // 只允许字母和数字
- // String regEx = "[^a-zA-Z0-9]";
- // 清除掉所有特殊字符
- String regEx = "[`[email protected]#$%^&*()+=|{}':;',//[//].<>/?~!@#¥%……&*()——+|{}【】‘;:”“’。,、?]";
- Pattern p = Pattern.compile(regEx);
- Matcher m = p.matcher(str);
- return m.replaceAll("").trim();
- }
- public int execRootCmdSilent(String cmd) {
- int result = -1;
- DataOutputStream dos = null;
- try {
- Process p = Runtime.getRuntime().exec("su");
- dos = new DataOutputStream(p.getOutputStream());
- dos.writeBytes(cmd + "\n");
- dos.flush();
- dos.writeBytes("exit\n");
- dos.flush();
- p.waitFor();
- result = p.exitValue();
- } catch (Exception e) {
- e.printStackTrace();
- } finally {
- if (dos != null) {
- try {
- dos.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- return result;
- }
提供自:投稿
- public String getFileMD5(File file) {
- if (!file.isFile()) {
- return null;
- }
- MessageDigest digest = null;
- FileInputStream in = null;
- byte buffer[] = new byte[1024];
- int len;
- try {
- digest = MessageDigest.getInstance("MD5");
- in = new FileInputStream(file);
- while ((len = in.read(buffer, 0, 1024)) != -1) {
- digest.update(buffer, 0, len);
- }
- } catch (Exception e) {
- e.printStackTrace();
- return null;
- } finally {
- if (in != null) {
- try {
- in.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- BigInteger bigInt = new BigInteger(1, digest.digest());
- return bigInt.toString(16);
- }
来源: http://www.phpxs.com/code/1002671/