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DeviceUtils.java
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import android.content.Context;
import android.util.DisplayMetrics;
import android.view.WindowManager;
public class DeviceUtils {
/**
* 获取屏幕分辨率
*/
public static DisplayMetrics getDisplayMetrics(Context context) {
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics metrics = new DisplayMetrics();
windowManager.getDefaultDisplay().getMetrics(metrics);
return metrics;
}
/**
* dp 转化为 px
*
* @param context context
* @param dpValue dpValue
* @return int
*/
public static int dp2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* px 转化为 dp
*
* @param context context
* @param pxValue pxValue
*/
public static int px2dp(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
/**
* 获取设备宽度（px）
*
* @param context context
* @return int
*/
public static int deviceWidth(Context context) {
return context.getResources().getDisplayMetrics().widthPixels;
}
/**
* 获取设备高度（px）
*/
public static int deviceHeight(Context context) {
return context.getResources().getDisplayMetrics().heightPixels;
}
/**
* 获取控件宽高
*/
public static void widgetWidthHeight(View view){
ViewTreeObserver vto = view.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
view.getViewTreeObserver().removeGlobalOnLayoutListener(this);
view.getHeight();
view.getWidth();
System.out.println(attractionImgIV.getHeight() + "----------------" + attractionImgIV.getWidth());
}
});
}
/**
* SD卡判断
*
* @return boolean
*/
public static boolean isSDCardAvailable() {
return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
}
/**
* 是否有网
*
* @param context context
* @return boolean
*/
public static boolean isNetworkConnected(Context context) {
if (context != null) {
ConnectivityManager mConnectivityManager
= (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
if (mNetworkInfo != null) {
return mNetworkInfo.isAvailable();
}
}
return false;
}
/**
* 返回版本名字
* 对应build.gradle中的versionName
*
* @param context context
* @return String
*/
public static String getVersionName(Context context) {
String versionName = "";
try {
PackageManager packageManager = context.getPackageManager();
PackageInfo packInfo = packageManager.getPackageInfo(context.getPackageName(), 0);
versionName = packInfo.versionName;
} catch (Exception e) {
e.printStackTrace();
}
return versionName;
}
/**
* 返回版本号
* 对应build.gradle中的versionCode
*
* @param context context
* @return String
*/
public static String getVersionCode(Context context) {
String versionCode = "";
try {
PackageManager packageManager = context.getPackageManager();
PackageInfo packInfo = packageManager.getPackageInfo(context.getPackageName(), 0);
versionCode = String.valueOf(packInfo.versionCode);
} catch (Exception e) {
e.printStackTrace();
}
return versionCode;
}
/**
* 获取设备的唯一标识，deviceId
*
* @param context context
* @return String
*/
public static String getDeviceId(Context context) {
TelephonyManager tm = (TelephonyManager) context.getSystemService(
Context.TELEPHONY_SERVICE);
String deviceId = tm.getDeviceId();
if (deviceId == null) {
return "-";
} else {
return deviceId;
}
}
/**
* 获取Wifi ip地址
*
* @param context
* @return
*/
public static String getWifiIpAddress(Context context) {
try {
WifiManager wifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int i = wifiInfo.getIpAddress();
return int2ip(i);
} catch (Exception ex) {
return " 获取IP出错鸟!!!!请保证是WIFI,或者请重新打开网络!\n" + ex.getMessage();
}
}
/**
* 将ip的整数形式转换成ip形式
*
* @param ipInt
* @return
*/
private static String int2ip(int ipInt) {
StringBuilder sb = new StringBuilder();
sb.append(ipInt & 0xFF).append(".");
sb.append((ipInt >> 8) & 0xFF).append(".");
sb.append((ipInt >> 16) & 0xFF).append(".");
sb.append((ipInt >> 24) & 0xFF);
return sb.toString();
}
public String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
}
return null;
}
/**
* 获取手机品牌
*
* @return String
*/
public static String getPhoneBrand() {
return android.os.Build.BRAND;
}
/**
* 获取手机型号
*
* @return String
*/
public static String getPhoneModel() {
return android.os.Build.MODEL;
}
/**
* 获取手机Android API等级（22、23 ...）
*
* @return int
*/
public static int getBuildLevel() {
return android.os.Build.VERSION.SDK_INT;
}
/**
* 获取手机Android 版本（4.4、5.0、5.1 ...）
*
* @return String
*/
public static String getBuildVersion() {
return android.os.Build.VERSION.RELEASE;
}
/**
* 获取当前App进程的id
*
* @return int
*/
public static int getAppProcessId() {
return android.os.Process.myPid();
}
/**
* 获取当前App进程的Name
*
* @param context context
* @param processId processId
* @return String
*/
public static String getAppProcessName(Context context, int processId) {
String processName = null;
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
// 获取所有运行App的进程集合
List l = am.getRunningAppProcesses();
Iterator i = l.iterator();
PackageManager pm = context.getPackageManager();
while (i.hasNext()) {
ActivityManager.RunningAppProcessInfo info
= (ActivityManager.RunningAppProcessInfo) (i.next());
try {
if (info.pid == processId) {
CharSequence c = pm.getApplicationLabel(
pm.getApplicationInfo(info.processName, PackageManager.GET_META_DATA));
processName = info.processName;
return processName;
}
} catch (Exception e) {
Log.e(DeviceUtils.class.getName(), e.getMessage(), e);
}
}
return processName;
}
/**
* 创建App文件夹
*
* @param appName appName
* @param application application
* @return String
*/
public static String createAPPFolder(String appName, Application application) {
return createAPPFolder(appName, application, null);
}
/**
* 创建App文件夹
*
* @param appName appName
* @param application application
* @param folderName folderName
* @return String
*/
public static String createAPPFolder(String appName, Application application, String folderName) {
File root = Environment.getExternalStorageDirectory();
File folder;
/**
* 如果存在SD卡
*/
if (DeviceUtils.isSDCardAvailable() && root != null) {
folder = new File(root, appName);
if (!folder.exists()) {
folder.mkdirs();
}
} else {
/**
* 不存在SD卡，就放到缓存文件夹内
*/
root = application.getCacheDir();
folder = new File(root, appName);
if (!folder.exists()) {
folder.mkdirs();
}
}
if (folderName != null) {
folder = new File(folder, folderName);
if (!folder.exists()) {
folder.mkdirs();
}
}
return folder.getAbsolutePath();
}
/**
* 通过Uri找到File
*
* @param context context
* @param uri uri
* @return File
*/
public static File uri2File(Activity context, Uri uri) {
File file;
String[] project = { MediaStore.Images.Media.DATA };
Cursor actualImageCursor = context.getContentResolver()
.query(uri, project, null, null, null);
if (actualImageCursor != null) {
int actual_image_column_index = actualImageCursor.getColumnIndexOrThrow(
MediaStore.Images.Media.DATA);
actualImageCursor.moveToFirst();
String img_path = actualImageCursor.getString(actual_image_column_index);
file = new File(img_path);
} else {
file = new File(uri.getPath());
}
if (actualImageCursor != null) actualImageCursor.close();
return file;
}
/**
* 获取AndroidManifest.xml里 <meta-data>的值
*
* @param context context
* @param name name
* @return String
*/
public static String getMetaData(Context context, String name) {
String value = null;
try {
ApplicationInfo appInfo = context.getPackageManager()
.getApplicationInfo(context.getPackageName(),
PackageManager.GET_META_DATA);
value = appInfo.metaData.getString(name);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return value;
}
/**
* 复制到剪贴板
*
* @param context context
* @param content content
*/
public static void copy2Clipboard(Context context, String content) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
android.content.ClipboardManager clipboardManager
= (android.content.ClipboardManager) context.getSystemService(
Context.CLIPBOARD_SERVICE);
ClipData clipData = ClipData.newPlainText(context.getString(R.string.app_name),
content);
clipboardManager.setPrimaryClip(clipData);
} else {
android.text.ClipboardManager clipboardManager = (android.text.ClipboardManager) context
.getSystemService(Context.CLIPBOARD_SERVICE);
clipboardManager.setText(content);
}
}
}