撥打電話
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public
static
void
call(Context context, String phoneNumber) { context.startActivity( new
Intent(Intent.ACTION_CALL, Uri.parse( "tel:"
+ phoneNumber))); } |
跳轉至撥號界面
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public
static
void
callDial(Context context, String phoneNumber) { context.startActivity( new
Intent(Intent.ACTION_DIAL, Uri.parse( "tel:"
+ phoneNumber))); } |
發送短信
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public
static
void
sendSms(Context context, String phoneNumber, String
content) { Uri
uri = Uri.parse( "smsto:" +
(TextUtils.isEmpty(phoneNumber) ? ""
: phoneNumber)); Intent
intent = new
Intent(Intent.ACTION_SENDTO, uri); intent.putExtra( "sms_body" ,
TextUtils.isEmpty(content) ? ""
: content); context.startActivity(intent); } |
喚醒屏幕並解鎖
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public
static
void
wakeUpAndUnlock(Context context){ KeyguardManager
km= (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
KeyguardManager.KeyguardLock
kl = km.newKeyguardLock( "unLock" );
//解鎖
kl.disableKeyguard();
//獲取電源管理器對象
PowerManager
pm=(PowerManager) context.getSystemService(Context.POWER_SERVICE); //獲取PowerManager.WakeLock對象,後面的參數|表示同時傳入兩個值,最後的是LogCat裏用的Tag
PowerManager.WakeLock
wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_DIM_WAKE_LOCK, "bright" );
//點亮屏幕
wl.acquire();
//釋放
wl.release();
} |
需要添加權限
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<uses-permission
android:name= "android.permission.WAKE_LOCK"
/> <uses-permission
android:name= "android.permission.DISABLE_KEYGUARD"
/> |
判斷當前App處於前臺還是後臺狀態
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public
static
boolean
isApplicationBackground( final
Context context) { ActivityManager
am = (ActivityManager) context .getSystemService(Context.ACTIVITY_SERVICE); @SuppressWarnings ( "deprecation" ) List<ActivityManager.RunningTaskInfo>
tasks = am.getRunningTasks( 1 ); if
(!tasks.isEmpty()) { ComponentName
topActivity = tasks.get( 0 ).topActivity; if
(!topActivity.getPackageName().equals(context.getPackageName())) { return
true ; } } return
false ; } |
需要添加權限
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<uses-permission android:name= "android.permission.GET_TASKS"
/> |
判斷當前手機是否處於鎖屏(睡眠)狀態
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public
static
boolean
isSleeping(Context context) { KeyguardManager
kgMgr = (KeyguardManager) context .getSystemService(Context.KEYGUARD_SERVICE); boolean
isSleeping = kgMgr.inKeyguardRestrictedInputMode(); return
isSleeping; } |
判斷當前是否有網絡連接
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public
static
boolean
isOnline(Context context) { ConnectivityManager
manager = (ConnectivityManager) context .getSystemService(Activity.CONNECTIVITY_SERVICE); NetworkInfo
info = manager.getActiveNetworkInfo(); if
(info != null
&& info.isConnected()) { return
true ; } return
false ; } |
判斷當前是否是WIFI連接狀態
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public
static
boolean
isWifiConnected(Context context) { ConnectivityManager
connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo
wifiNetworkInfo = connectivityManager .getNetworkInfo(ConnectivityManager.TYPE_WIFI); if
(wifiNetworkInfo.isConnected()) { return
true ; } return
false ; } |
安裝APK
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public
static
void
installApk(Context context, File file) { Intent
intent = new
Intent(); intent.setAction( "android.intent.action.VIEW" ); intent.addCategory( "android.intent.category.DEFAULT" ); intent.setType( "application/vnd.android.package-archive" ); intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive" ); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent); } |
判斷當前設備是否爲手機
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public
static
boolean
isPhone(Context context) { TelephonyManager
telephony = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); if
(telephony.getPhoneType() == TelephonyManager.PHONE_TYPE_NONE) { return
false ; }
else
{ return
true ; } } |
獲取當前設備寬高,單位px
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@SuppressWarnings ( "deprecation" ) public
static
int
getDeviceWidth(Context context) { WindowManager
manager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); return
manager.getDefaultDisplay().getWidth(); } @SuppressWarnings ( "deprecation" ) public
static
int
getDeviceHeight(Context context) { WindowManager
manager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); return
manager.getDefaultDisplay().getHeight(); } |
獲取當前設備的IMEI,需要與上面的isPhone()一起使用
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@TargetApi (Build.VERSION_CODES.CUPCAKE) public
static
String getDeviceIMEI(Context context) { String
deviceId; if
(isPhone(context)) { TelephonyManager
telephony = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); deviceId
= telephony.getDeviceId(); }
else
{ deviceId
= Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID); } return
deviceId; } |
獲取當前設備的MAC地址
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public
static
String getMacAddress(Context context) { String
macAddress; WifiManager
wifi = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); WifiInfo
info = wifi.getConnectionInfo(); macAddress
= info.getMacAddress(); if
( null
== macAddress) { return
"" ; } macAddress
= macAddress.replace( ":" ,
"" ); return
macAddress; } |
獲取當前程序的版本號
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public
static
String getAppVersion(Context context) { String
version = "0" ; try
{ version
= context.getPackageManager().getPackageInfo( context.getPackageName(),
0 ).versionName; }
catch
(PackageManager.NameNotFoundException e) { e.printStackTrace(); } return
version; } |
收集設備信息,用於信息統計分析
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public
static
Properties collectDeviceInfo(Context context) { Properties
mDeviceCrashInfo = new
Properties(); try
{ PackageManager
pm = context.getPackageManager(); PackageInfo
pi = pm.getPackageInfo(context.getPackageName(), PackageManager.GET_ACTIVITIES); if
(pi != null )
{ mDeviceCrashInfo.put(VERSION_NAME, pi.versionName
== null
? "not
set"
: pi.versionName); mDeviceCrashInfo.put(VERSION_CODE,
pi.versionCode); } }
catch
(PackageManager.NameNotFoundException e) { Log.e(TAG,
"Error
while collect package info" ,
e); } Field[]
fields = Build. class .getDeclaredFields(); for
(Field field : fields) { try
{ field.setAccessible( true ); mDeviceCrashInfo.put(field.getName(),
field.get( null )); }
catch
(Exception e) { Log.e(TAG,
"Error
while collect crash info" ,
e); } } return
mDeviceCrashInfo; } public
static
String collectDeviceInfoStr(Context context) { Properties
prop = collectDeviceInfo(context); Set
deviceInfos = prop.keySet(); StringBuilder
deviceInfoStr = new
StringBuilder( "{\n" ); for
(Iterator iter = deviceInfos.iterator(); iter.hasNext();) { Object
item = iter.next(); deviceInfoStr.append( "\t\t\t"
+ item + ":"
+ prop.get(item) +
",
\n" ); } deviceInfoStr.append( "}" ); return
deviceInfoStr.toString(); } |
是否有SD卡
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public
static
boolean
haveSDCard() { return
android.os.Environment.getExternalStorageState().equals( android.os.Environment.MEDIA_MOUNTED); } |
動態隱藏軟鍵盤
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@TargetApi (Build.VERSION_CODES.CUPCAKE) public
static
void
hideSoftInput(Activity activity) { View
view = activity.getWindow().peekDecorView(); if
(view != null )
{ InputMethodManager
inputmanger = (InputMethodManager) activity .getSystemService(Context.INPUT_METHOD_SERVICE); inputmanger.hideSoftInputFromWindow(view.getWindowToken(),
0 ); } } @TargetApi (Build.VERSION_CODES.CUPCAKE) public
static
void
hideSoftInput(Context context, EditText edit) { edit.clearFocus(); InputMethodManager
inputmanger = (InputMethodManager) context .getSystemService(Context.INPUT_METHOD_SERVICE); inputmanger.hideSoftInputFromWindow(edit.getWindowToken(),
0 ); } |
動態顯示軟鍵盤
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@TargetApi (Build.VERSION_CODES.CUPCAKE) public
static
void
showSoftInput(Context context, EditText edit) { edit.setFocusable( true ); edit.setFocusableInTouchMode( true ); edit.requestFocus(); InputMethodManager
inputManager = (InputMethodManager) context .getSystemService(Context.INPUT_METHOD_SERVICE); inputManager.showSoftInput(edit,
0 ); } |
動態顯示或者是隱藏軟鍵盤
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@TargetApi (Build.VERSION_CODES.CUPCAKE) public
static
void
toggleSoftInput(Context context, EditText edit) { edit.setFocusable( true ); edit.setFocusableInTouchMode( true ); edit.requestFocus(); InputMethodManager
inputManager = (InputMethodManager) context .getSystemService(Context.INPUT_METHOD_SERVICE); inputManager.toggleSoftInput(InputMethodManager.SHOW_FORCED,
0 ); } |
主動回到Home,後臺運行
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public
static
void
goHome(Context context) { Intent
mHomeIntent = new
Intent(Intent.ACTION_MAIN); mHomeIntent.addCategory(Intent.CATEGORY_HOME); mHomeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED); context.startActivity(mHomeIntent); } |
獲取狀態欄高度
注意,要在onWindowFocusChanged中調用,在onCreate中獲取高度爲0
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@TargetApi (Build.VERSION_CODES.CUPCAKE) public
static
int
getStatusBarHeight(Activity activity) { Rect
frame = new
Rect(); activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame); return
frame.top; } |
獲取狀態欄高度+標題欄(ActionBar)高度
(注意,如果沒有ActionBar,那麼獲取的高度將和上面的是一樣的,只有狀態欄的高度)
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public
static
int
getTopBarHeight(Activity activity) { return
activity.getWindow().findViewById(Window.ID_ANDROID_CONTENT) .getTop(); } |
獲取MCC+MNC代碼 (SIM卡運營商國家代碼和運營商網絡代碼)
僅當用戶已在網絡註冊時有效, CDMA 可能會無效(中國移動:46000 46002, 中國聯通:46001,中國電信:46003)
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public
static
String getNetworkOperator(Context context) { TelephonyManager
telephonyManager = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); return
telephonyManager.getNetworkOperator(); } |
返回移動網絡運營商的名字
(例:中國聯通、中國移動、中國電信) 僅當用戶已在網絡註冊時有效, CDMA 可能會無效)
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public
static
String getNetworkOperatorName(Context context) { TelephonyManager
telephonyManager = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); return
telephonyManager.getNetworkOperatorName(); } |
返回移動終端類型
- PHONE_TYPE_NONE :0 手機制式未知
- PHONE_TYPE_GSM :1 手機制式爲GSM,移動和聯通
- PHONE_TYPE_CDMA :2 手機制式爲CDMA,電信
- PHONE_TYPE_SIP:3
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public
static
int
getPhoneType(Context context) { TelephonyManager
telephonyManager = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); return
telephonyManager.getPhoneType(); } |
判斷手機連接的網絡類型(2G,3G,4G)
聯通的3G爲UMTS或HSDPA,移動和聯通的2G爲GPRS或EGDE,電信的2G爲CDMA,電信的3G爲EVDO
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public
class
Constants { /** *
Unknown network class */ public
static
final
int
NETWORK_CLASS_UNKNOWN = 0 ; /** *
wifi net work */ public
static
final
int
NETWORK_WIFI = 1 ; /** *
"2G" networks */ public
static
final
int
NETWORK_CLASS_2_G = 2 ; /** *
"3G" networks */ public
static
final
int
NETWORK_CLASS_3_G = 3 ; /** *
"4G" networks */ public
static
final
int
NETWORK_CLASS_4_G = 4 ; } public
static
int
getNetWorkClass(Context context) { TelephonyManager
telephonyManager = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); switch
(telephonyManager.getNetworkType()) { case
TelephonyManager.NETWORK_TYPE_GPRS: case
TelephonyManager.NETWORK_TYPE_EDGE: case
TelephonyManager.NETWORK_TYPE_CDMA: case
TelephonyManager.NETWORK_TYPE_1xRTT: case
TelephonyManager.NETWORK_TYPE_IDEN: return
Constants.NETWORK_CLASS_2_G; case
TelephonyManager.NETWORK_TYPE_UMTS: case
TelephonyManager.NETWORK_TYPE_EVDO_0: case
TelephonyManager.NETWORK_TYPE_EVDO_A: case
TelephonyManager.NETWORK_TYPE_HSDPA: case
TelephonyManager.NETWORK_TYPE_HSUPA: case
TelephonyManager.NETWORK_TYPE_HSPA: case
TelephonyManager.NETWORK_TYPE_EVDO_B: case
TelephonyManager.NETWORK_TYPE_EHRPD: case
TelephonyManager.NETWORK_TYPE_HSPAP: return
Constants.NETWORK_CLASS_3_G; case
TelephonyManager.NETWORK_TYPE_LTE: return
Constants.NETWORK_CLASS_4_G; default : return
Constants.NETWORK_CLASS_UNKNOWN; } } |
判斷當前手機的網絡類型(WIFI還是2,3,4G)
需要用到上面的方法
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public
static
int
getNetWorkStatus(Context context) { int
netWorkType = Constants.NETWORK_CLASS_UNKNOWN; ConnectivityManager
connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo
networkInfo = connectivityManager.getActiveNetworkInfo(); if
(networkInfo != null
&& networkInfo.isConnected()) { int
type = networkInfo.getType(); if
(type == ConnectivityManager.TYPE_WIFI) { netWorkType
= Constants.NETWORK_WIFI; }
else
if
(type == ConnectivityManager.TYPE_MOBILE) { netWorkType
= getNetWorkClass(context); } } return
netWorkType; } |
px-dp轉換
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public
static
int
dip2px(Context context, float
dpValue) { final
float
scale = context.getResources().getDisplayMetrics().density; return
( int )
(dpValue * scale + 0 .5f); } public
static
int
px2dip(Context context, float
pxValue) { final
float
scale = context.getResources().getDisplayMetrics().density; return
( int )
(pxValue / scale + 0 .5f); } |
px-sp轉換
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public
static
int
px2sp(Context context, float
pxValue) { final
float
fontScale = context.getResources().getDisplayMetrics().scaledDensity; return
( int )
(pxValue / fontScale + 0 .5f); } public
static
int
sp2px(Context context, float
spValue) { final
float
fontScale = context.getResources().getDisplayMetrics().scaledDensity; return
( int )
(spValue * fontScale + 0 .5f); } |
把一個毫秒數轉化成時間字符串
格式爲小時/分/秒/毫秒(如:24903600 –> 06小時55分03秒600毫秒)
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/** *
@param millis *
要轉化的毫秒數。 *
@param isWhole *
是否強制全部顯示小時/分/秒/毫秒。 *
@param isFormat *
時間數字是否要格式化,如果true:少位數前面補全;如果false:少位數前面不補全。 *
@return 返回時間字符串:小時/分/秒/毫秒的格式(如:24903600 --> 06小時55分03秒600毫秒)。 */ public
static
String millisToString( long
millis, boolean
isWhole, boolean
isFormat) { String
h = "" ; String
m = "" ; String
s = "" ; String
mi = "" ; if
(isWhole) { h
= isFormat ? "00小時"
: "0小時" ; m
= isFormat ? "00分"
: "0分" ; s
= isFormat ? "00秒"
: "0秒" ; mi
= isFormat ? "00毫秒"
: "0毫秒" ; } long
temp = millis; long
hper = 60
* 60
* 1000 ; long
mper = 60
* 1000 ; long
sper = 1000 ; if
(temp / hper > 0 )
{ if
(isFormat) { h
= temp / hper < 10
? "0"
+ temp / hper : temp / hper + "" ; }
else
{ h
= temp / hper + "" ; } h
+= "小時" ; } temp
= temp % hper; if
(temp / mper > 0 )
{ if
(isFormat) { m
= temp / mper < 10
? "0"
+ temp / mper : temp / mper + "" ; }
else
{ m
= temp / mper + "" ; } m
+= "分" ; } temp
= temp % mper; if
(temp / sper > 0 )
{ if
(isFormat) { s
= temp / sper < 10
? "0"
+ temp / sper : temp / sper + "" ; }
else
{ s
= temp / sper + "" ; } s
+= "秒" ; } temp
= temp % sper; mi
= temp + "" ; if
(isFormat) { if
(temp < 100
&& temp >= 10 )
{ mi
= "0"
+ temp; } if
(temp < 10 )
{ mi
= "00"
+ temp; } } mi
+= "毫秒" ; return
h + m + s + mi; } |
格式爲小時/分/秒/毫秒(如:24903600 –> 06小時55分03秒)。
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/** * *
@param millis *
要轉化的毫秒數。 *
@param isWhole *
是否強制全部顯示小時/分/秒/毫秒。 *
@param isFormat *
時間數字是否要格式化,如果true:少位數前面補全;如果false:少位數前面不補全。 *
@return 返回時間字符串:小時/分/秒/毫秒的格式(如:24903600 --> 06小時55分03秒)。 */ public
static
String millisToStringMiddle( long
millis, boolean
isWhole, boolean
isFormat) { return
millisToStringMiddle(millis, isWhole, isFormat, "小時" ,
"分鐘" ,
"秒" ); } public
static
String millisToStringMiddle( long
millis, boolean
isWhole, boolean
isFormat, String hUnit, String mUnit, String sUnit) { String
h = "" ; String
m = "" ; String
s = "" ; if
(isWhole) { h
= isFormat ? "00"
+ hUnit : "0"
+ hUnit; m
= isFormat ? "00"
+ mUnit : "0"
+ mUnit; s
= isFormat ? "00"
+ sUnit : "0"
+ sUnit; } long
temp = millis; long
hper = 60
* 60
* 1000 ; long
mper = 60
* 1000 ; long
sper = 1000 ; if
(temp / hper > 0 )
{ if
(isFormat) { h
= temp / hper < 10
? "0"
+ temp / hper : temp / hper + "" ; }
else
{ h
= temp / hper + "" ; } h
+= hUnit; } temp
= temp % hper; if
(temp / mper > 0 )
{ if
(isFormat) { m
= temp / mper < 10
? "0"
+ temp / mper : temp / mper + "" ; }
else
{ m
= temp / mper + "" ; } m
+= mUnit; } temp
= temp % mper; if
(temp / sper > 0 )
{ if
(isFormat) { s
= temp / sper < 10
? "0"
+ temp / sper : temp / sper + "" ; }
else
{ s
= temp / sper + "" ; } s
+= sUnit; } return
h + m + s; } |
把一個毫秒數轉化成時間字符串。格式爲小時/分/秒/毫秒(如:24903600 –> 06小時55分鐘)
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/** * *
@param millis *
要轉化的毫秒數。 *
@param isWhole *
是否強制全部顯示小時/分。 *
@param isFormat *
時間數字是否要格式化,如果true:少位數前面補全;如果false:少位數前面不補全。 *
@return 返回時間字符串:小時/分/秒/毫秒的格式(如:24903600 --> 06小時55分鐘)。 */ public
static
String millisToStringShort( long
millis, boolean
isWhole, boolean
isFormat) { String
h = "" ; String
m = "" ; if
(isWhole) { h
= isFormat ? "00小時"
: "0小時" ; m
= isFormat ? "00分鐘"
: "0分鐘" ; } long
temp = millis; long
hper = 60
* 60
* 1000 ; long
mper = 60
* 1000 ; long
sper = 1000 ; if
(temp / hper > 0 )
{ if
(isFormat) { h
= temp / hper < 10
? "0"
+ temp / hper : temp / hper + "" ; }
else
{ h
= temp / hper + "" ; } h
+= "小時" ; } temp
= temp % hper; if
(temp / mper > 0 )
{ if
(isFormat) { m
= temp / mper < 10
? "0"
+ temp / mper : temp / mper + "" ; }
else
{ m
= temp / mper + "" ; } m
+= "分鐘" ; } return
h + m; } |
把日期毫秒轉化爲字符串
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/** *
@param millis *
要轉化的日期毫秒數。 *
@param pattern *
要轉化爲的字符串格式(如:yyyy-MM-dd HH:mm:ss)。 *
@return 返回日期字符串。 */ public
static
String millisToStringDate( long
millis, String pattern) { SimpleDateFormat
format = new
SimpleDateFormat(pattern, Locale.getDefault()); return
format.format( new
Date(millis)); } |
把日期毫秒轉化爲字符串(文件名)
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/** *
@param millis *
要轉化的日期毫秒數。 *
@param pattern *
要轉化爲的字符串格式(如:yyyy-MM-dd HH:mm:ss)。 *
@return 返回日期字符串(yyyy_MM_dd_HH_mm_ss)。 */ public
static
String millisToStringFilename( long
millis, String pattern) { String
dateStr = millisToStringDate(millis, pattern); return
dateStr.replaceAll( "[-
:]" ,
"_" ); } |
轉換當前時間爲易用時間格式
1小時內用,多少分鐘前; 超過1小時,顯示時間而無日期; 如果是昨天,則顯示昨天 超過昨天再顯示日期; 超過1年再顯示年。
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public
static
long
oneHourMillis = 60
* 60
* 1000 ;
//
一小時的毫秒數 public
static
long
oneDayMillis = 24
* oneHourMillis; //
一天的毫秒數 public
static
long
oneYearMillis = 365
* oneDayMillis; //
一年的毫秒數 public
static
String millisToLifeString( long
millis) { long
now = System.currentTimeMillis(); long
todayStart = string2Millis(millisToStringDate(now, "yyyy-MM-dd" ), "yyyy-MM-dd" ); //
一小時內 if
(now - millis <= oneHourMillis && now - millis > 0l) { String
m = millisToStringShort(now - millis, false ,
false ); return
"" .equals(m)
? "1分鐘內"
: m + "前" ; } //
大於今天開始開始值,小於今天開始值加一天(即今天結束值) if
(millis >= todayStart && millis <= oneDayMillis + todayStart) { return
"今天 "
+ millisToStringDate(millis, "HH:mm" ); } //
大於(今天開始值減一天,即昨天開始值) if
(millis > todayStart - oneDayMillis) { return
"昨天 "
+ millisToStringDate(millis, "HH:mm" ); } long
thisYearStart = string2Millis(millisToStringDate(now, "yyyy" ), "yyyy" ); //
大於今天小於今年 if
(millis > thisYearStart) { return
millisToStringDate(millis, "MM月dd日
HH:mm" ); } return
millisToStringDate(millis, "yyyy年MM月dd日
HH:mm" ); } |
字符串解析成毫秒數
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public
static
long
string2Millis(String str, String pattern) { SimpleDateFormat
format = new
SimpleDateFormat(pattern, Locale.getDefault()); long
millis = 0 ; try
{ millis
= format.parse(str).getTime(); }
catch
(ParseException e) { Log.e( "TAG" ,
e.getMessage()); } return
millis; } |
手機號碼正則
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public
static
final
String REG_PHONE_CHINA = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$" ; |
郵箱正則
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public
static
final
String REG_EMAIL = "\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*" ; |