package com.android.entity;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import junit.framework.Assert;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.ContentUris;
import android.content.Context;
import android.content.DialogInterface;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;
public class Util {
private static final String TAG = Constant.TAG;
private static Dialog mProgressDialog;
private static Toast mToast;
/* Convert byte[] to hex string.这里我们可以将byte转换成int，然后利用Integer.toHexString(int)来转换成16进制字符串。
* @param src byte[] data
* @return hex string
*/
public static String bytesToHexString(byte[] src){
StringBuilder stringBuilder = new StringBuilder("");
if (src == null || src.length <= 0) {
return null;
}
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
return stringBuilder.toString();
}
/**
* Convert hex string to byte[]
* @param hexString the hex string
* @return byte[]
*/
public static byte[] hexStringToBytes(String hexString) {
if (hexString == null || hexString.equals("")) {
return null;
}
hexString = hexString.toUpperCase();
int length = hexString.length() / 2;
char[] hexChars = hexString.toCharArray();
byte[] d = new byte[length];
for (int i = 0; i < length; i++) {
int pos = i * 2;
d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
}
return d;
}
/**
* Convert char to byte
* @param c char
* @return byte
*/
private static byte charToByte(char c) {
return (byte) "0123456789ABCDEF".indexOf(c);
}
/*
* 16进制数字字符集
*/
private static String hexString="0123456789ABCDEF";
/*
* 将字符串编码成16进制数字,适用于所有字符（包括中文）
*/
public static String toHexString(String str)
{
//根据默认编码获取字节数组
byte[] bytes = null;
try {
bytes = str.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if (bytes == null) return null;
StringBuilder sb=new StringBuilder(bytes.length*2);
//将字节数组中每个字节拆解成2位16进制整数
for(int i=0;i<bytes.length;i++)
{
sb.append(hexString.charAt((bytes[i]&0xf0)>>4));
sb.append(hexString.charAt((bytes[i]&0x0f)>>0));
}
return sb.toString();
}
//转换十六进制编码为字符串
public static String hexToString(String s)
{
if("0x".equals(s.substring(0, 2)))
{
s =s.substring(2);
}
byte[] baKeyword = new byte[s.length()/2];
for(int i = 0; i < baKeyword.length; i++)
{
try
{
baKeyword[i] = (byte)(0xff & Integer.parseInt(s.substring(i*2, i*2+2),16));
}
catch(Exception e)
{
e.printStackTrace();
}
}
try
{
s = new String(baKeyword, "utf-8");//UTF-16le:Not
}
catch (Exception e1)
{
e1.printStackTrace();
}
return s;
}
public static 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;
}
public static byte[] getHtmlByteArray(final String url) {
URL htmlUrl = null;
InputStream inStream = null;
try {
htmlUrl = new URL(url);
URLConnection connection = htmlUrl.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
inStream = httpConnection.getInputStream();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
byte[] data = inputStreamToByte(inStream);
return data;
}
public static byte[] inputStreamToByte(InputStream is) {
try{
ByteArrayOutputStream bytestream = new ByteArrayOutputStream();
int ch;
while ((ch = is.read()) != -1) {
bytestream.write(ch);
}
byte imgdata[] = bytestream.toByteArray();
bytestream.close();
return imgdata;
}catch(Exception e){
e.printStackTrace();
}
return null;
}
public static byte[] readFromFile(String fileName, int offset, int len) {
if (fileName == null) {
return null;
}
File file = new File(fileName);
if (!file.exists()) {
Log.i(TAG, "readFromFile: file not found");
return null;
}
if (len == -1) {
len = (int) file.length();
}
Log.d(TAG, "readFromFile : offset = " + offset + " len = " + len + " offset + len = " + (offset + len));
if(offset <0){
Log.e(TAG, "readFromFile invalid offset:" + offset);
return null;
}
if(len <=0 ){
Log.e(TAG, "readFromFile invalid len:" + len);
return null;
}
if(offset + len > (int) file.length()){
Log.e(TAG, "readFromFile invalid file len:" + file.length());
return null;
}
byte[] b = null;
try {
RandomAccessFile in = new RandomAccessFile(fileName, "r");
b = new byte[len];
in.seek(offset);
in.readFully(b);
in.close();
} catch (Exception e) {
Log.e(TAG, "readFromFile : errMsg = " + e.getMessage());
e.printStackTrace();
}
return b;
}
public static int computeSampleSize(BitmapFactory.Options options,
int minSideLength, int maxNumOfPixels) {
int initialSize = computeInitialSampleSize(options, minSideLength,
maxNumOfPixels);
int roundedSize;
if (initialSize <= 8) {
roundedSize = 1;
while (roundedSize < initialSize) {
roundedSize <<= 1;
}
} else {
roundedSize = (initialSize + 7) / 8 * 8;
}
return roundedSize;
}
private static int computeInitialSampleSize(BitmapFactory.Options options,
int minSideLength, int maxNumOfPixels) {
double w = options.outWidth;
double h = options.outHeight;
int lowerBound = (maxNumOfPixels == -1) ? 1 :
(int) Math.ceil(Math.sqrt(w * h / maxNumOfPixels));
int upperBound = (minSideLength == -1) ? 128 :
(int) Math.min(Math.floor(w / minSideLength),
Math.floor(h / minSideLength));
if (upperBound < lowerBound) {
// return the larger one when there is no overlapping zone.
return lowerBound;
}
if ((maxNumOfPixels == -1) &&
(minSideLength == -1)) {
return 1;
} else if (minSideLength == -1) {
return lowerBound;
} else {
return upperBound;
}
}
/**
* 以最省内存的方式读取图片
*/
public static Bitmap readBitmap(final String path){
try{
FileInputStream stream = new FileInputStream(new File(path+"test.jpg"));
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inSampleSize = 8;
opts.inPurgeable=true;
opts.inInputShareable=true;
Bitmap bitmap = BitmapFactory.decodeStream(stream , null, opts);
return bitmap;
} catch (OutOfMemoryError e) {
return null;
} catch (Exception e) {
return null;
}
}
private static final int MAX_DECODE_PICTURE_SIZE = 1920 * 1440;
public static Bitmap extractThumbNail(final String path, final int height, final int width, final boolean crop) {
Assert.assertTrue(path != null && !path.equals("") && height > 0 && width > 0);
BitmapFactory.Options options = new BitmapFactory.Options();
try {
options.inJustDecodeBounds = true;
Bitmap tmp = BitmapFactory.decodeFile(path, options);
if (tmp != null) {
tmp.recycle();
tmp = null;
}
Log.d(TAG, "extractThumbNail: round=" + width + "x" + height + ", crop=" + crop);
final double beY = options.outHeight * 1.0 / height;
final double beX = options.outWidth * 1.0 / width;
Log.d(TAG, "extractThumbNail: extract beX = " + beX + ", beY = " + beY);
options.inSampleSize = (int) (crop ? (beY > beX ? beX : beY) : (beY < beX ? beX : beY));
if (options.inSampleSize <= 1) {
options.inSampleSize = 1;
}
// NOTE: out of memory error
while (options.outHeight * options.outWidth / options.inSampleSize > MAX_DECODE_PICTURE_SIZE) {
options.inSampleSize++;
}
int newHeight = height;
int newWidth = width;
if (crop) {
if (beY > beX) {
newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
} else {
newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
}
} else {
if (beY < beX) {
newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
} else {
newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
}
}
options.inJustDecodeBounds = false;
Log.i(TAG, "bitmap required size=" + newWidth + "x" + newHeight + ", orig=" + options.outWidth + "x" + options.outHeight + ", sample=" + options.inSampleSize);
Bitmap bm = BitmapFactory.decodeFile(path, options);
if (bm == null) {
Log.e(TAG, "bitmap decode failed");
return null;
}
Log.i(TAG, "bitmap decoded size=" + bm.getWidth() + "x" + bm.getHeight());
final Bitmap scale = Bitmap.createScaledBitmap(bm, newWidth, newHeight, true);
if (scale != null) {
bm.recycle();
bm = scale;
}
if (crop) {
final Bitmap cropped = Bitmap.createBitmap(bm, (bm.getWidth() - width) >> 1, (bm.getHeight() - height) >> 1, width, height);
if (cropped == null) {
return bm;
}
bm.recycle();
bm = cropped;
Log.i(TAG, "bitmap croped size=" + bm.getWidth() + "x" + bm.getHeight());
}
return bm;
} catch (final OutOfMemoryError e) {
Log.e(TAG, "decode bitmap failed: " + e.getMessage());
options = null;
}
return null;
}
public static final void showResultDialog(Context context, String msg,
String title) {
if(msg == null) return;
String rmsg = msg.replace(",", "\n");
Log.d("Util", rmsg);
new AlertDialog.Builder(context).setTitle(title).setMessage(rmsg)
.setNegativeButton("知道了", null).create().show();
}
public static final void showProgressDialog(Context context, String title,
String message) {
dismissDialog();
if (TextUtils.isEmpty(title)) {
title = "请稍候";
}
if (TextUtils.isEmpty(message)) {
message = "正在加载...";
}
mProgressDialog = ProgressDialog.show(context, title, message);
}
public static AlertDialog showConfirmCancelDialog(Context context,
String title, String message,
DialogInterface.OnClickListener posListener) {
AlertDialog dlg = new AlertDialog.Builder(context).setMessage(message)
.setPositiveButton("确认", posListener)
.setNegativeButton("取消", null).create();
dlg.setCanceledOnTouchOutside(false);
dlg.show();
return dlg;
}
public static final void dismissDialog() {
if (mProgressDialog != null) {
mProgressDialog.dismiss();
mProgressDialog = null;
}
}
/**
* 打印消息并且用Toast显示消息
*
* @param activity
* @param message
* @param logLevel
* 填d, w, e分别代表debug, warn, error; 默认是debug
*/
public static final void toastMessage(final Activity activity,
final String message, String logLevel) {
if ("w".equals(logLevel)) {
Log.w("sdkDemo", message);
} else if ("e".equals(logLevel)) {
Log.e("sdkDemo", message);
} else {
Log.d("sdkDemo", message);
}
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
if (mToast != null) {
mToast.cancel();
mToast = null;
}
mToast = Toast.makeText(activity, message, Toast.LENGTH_SHORT);
mToast.show();
}
});
}
/**
* 打印消息并且用Toast显示消息
*
* @param activity
* @param message
* @param logLevel
* 填d, w, e分别代表debug, warn, error; 默认是debug
*/
public static final void toastMessage(final Activity activity,
final String message) {
toastMessage(activity, message, null);
}
/**
* 根据一个网络连接(String)获取bitmap图像
*
* @param imageUri
* @return
* @throws MalformedURLException
*/
public static Bitmap getbitmap(String imageUri) {
Log.v(TAG, "getbitmap:" + imageUri);
// 显示网络上的图片
Bitmap bitmap = null;
try {
URL myFileUrl = new URL(imageUri);
HttpURLConnection conn = (HttpURLConnection) myFileUrl
.openConnection();
conn.setDoInput(true);
conn.connect();
InputStream is = conn.getInputStream();
bitmap = BitmapFactory.decodeStream(is);
is.close();
Log.v(TAG, "image download finished." + imageUri);
} catch (OutOfMemoryError e) {
e.printStackTrace();
bitmap = null;
} catch (IOException e) {
e.printStackTrace();
Log.v(TAG, "getbitmap bmp fail---");
bitmap = null;
}
return bitmap;
}
public static void release() {
mProgressDialog = null;
mToast = null;
}
// =========
// =通过URI获取本地图片的path
// =兼容android 5.0
// ==========
public static String ACTION_OPEN_DOCUMENT = "android.intent.action.OPEN_DOCUMENT";
public static int Build_VERSION_KITKAT = 19;
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= 19;
// DocumentProvider
if (isKitKat && isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),
Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] { split[1] };
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
private static final String PATH_DOCUMENT = "document";
/**
* Test if the given URI represents a {@link Document} backed by a
* {@link DocumentsProvider}.
*/
private static boolean isDocumentUri(Context context, Uri uri) {
final List<String> paths = uri.getPathSegments();
if (paths.size() < 2) {
return false;
}
if (!PATH_DOCUMENT.equals(paths.get(0))) {
return false;
}
return true;
}
private static String getDocumentId(Uri documentUri) {
final List<String> paths = documentUri.getPathSegments();
if (paths.size() < 2) {
throw new IllegalArgumentException("Not a document: " + documentUri);
}
if (!PATH_DOCUMENT.equals(paths.get(0))) {
throw new IllegalArgumentException("Not a document: " + documentUri);
}
return paths.get(1);
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context
* The context.
* @param uri
* The Uri to query.
* @param selection
* (Optional) Filter used in the query.
* @param selectionArgs
* (Optional) Selection arguments used in the query.
* [url=home.php?mod=space&uid=7300]@return[/url] The value of
* the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = { column };
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri
* The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
/**
* dpתpx
*
*/
public static int dip2px(Context ctx,float dpValue) {
final float scale = ctx.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* pxתdp
*/
public static int px2dip(Context ctx,float pxValue) {
final float scale = ctx.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
}