Android(安卓)- 判断当前网络环境、隐藏软键盘、动态监测及获取权限、Bitmap与Base64互转、SHA1算法

转载请注明出处：https://blog.csdn.net/mythmayor/article/details/101024337

一、判断当前网络环境

/** * 判断当前网络环境是WiFi还是移动数据 * * @param activity 要调用方法的Activity * @return 网络类型，1为WiFi、2为移动数据、3为其它 */public static int checkNetType(Activity activity) {    //判断是连接的内网还是外网主要用到ConnectivityManager    ConnectivityManager cm = (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE);    boolean isWifiNet = false;    boolean isGprsNet = false;    try {        isWifiNet = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED ? true : false;    } catch (Exception e) {        e.printStackTrace();    }    try {        isGprsNet = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.CONNECTED ? true : false;    } catch (Exception e) {        e.printStackTrace();    }    if (isWifiNet) {//连接的WiFi        return 1;    } else if (isGprsNet) {//连接的数据网络        return 2;    } else {        return 3;    }}

二、隐藏软键盘

/**  * 隐藏软键盘  *  * @param activity 当前界面  * @param editText 当前输入框  * @return true未隐藏 false隐藏  */ public static boolean hideSoftInput(Activity activity, EditText editText) {     InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);     if (imm != null) {         return imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);     }     return false; }

三、动态监测及获取权限

/** * 检测并获取权限  *  * @param activity    Activity  * @param permission  权限名称，如Manifest.permission.READ_EXTERNAL_STORAGE  * @param requestCode 请求码  */ public static void checkPermission(Activity activity, String permission, int requestCode) {     if (Build.VERSION.SDK_INT >= 23) {//如果系统是6.0及以上则去申请         int checkPermission = ContextCompat.checkSelfPermission(activity, permission);         //检测是否已经申请         if (checkPermission != PackageManager.PERMISSION_GRANTED) {             //动态申请权限             ActivityCompat.requestPermissions(activity, new String[]{permission}, requestCode);         }     } }

四、Bitmap转为Base64

/** * Bitmap转为Base64 * * @param bitmap * @return */public static String bitmapToBase64(Bitmap bitmap) {    String result = null;    ByteArrayOutputStream baos = null;    try {        if (bitmap != null) {            baos = new ByteArrayOutputStream();            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);            baos.flush();            baos.close();            byte[] bitmapBytes = baos.toByteArray();            result = Base64.encodeToString(bitmapBytes, Base64.DEFAULT);        }    } catch (IOException e) {        e.printStackTrace();    } finally {        try {            if (baos != null) {                baos.flush();                baos.close();            }        } catch (IOException e) {            e.printStackTrace();        }    }    return result;}

五、Base64转为Bitmap

/**  * Base64转为Bitmap  *  * @param base64Data  * @return  */ public static Bitmap base64ToBitmap(String base64Data) {     byte[] bytes = Base64.decode(base64Data, Base64.DEFAULT);     return BitmapFactory.decodeByteArray(bytes, 0, bytes.length); }

六、SHA1算法

/** * SHA1算法 * * @param data * @return * @throws NoSuchAlgorithmException */public static String sha1(String data) throws NoSuchAlgorithmException {    MessageDigest md = MessageDigest.getInstance("SHA1");    md.update(data.getBytes());    StringBuffer buf = new StringBuffer();    byte[] bits = md.digest();    for (int i = 0; i < bits.length; i++) {        int a = bits[i];        if (a < 0) a += 256;        if (a < 16) buf.append("0");        buf.append(Integer.toHexString(a));    }    return buf.toString();}

转载请注明出处：https://blog.csdn.net/mythmayor/article/details/101024337

一、判断当前网络环境

二、隐藏软键盘

三、动态监测及获取权限

四、Bitmap转为Base64

五、Base64转为Bitmap

六、SHA1算法

更多相关文章

随机推荐