androidifid
⑴ 安卓开发 创建按钮if语句
对按钮事件进行监听
public void onClick方法里面写按钮处理事件。
希望能帮到你
⑵ 如何修改android模拟器上的IMEI，IMSI，SIM card serial number
手机使用IMEI和IMSI登录到GSM网络的，由GSM网络侧负责将IMSI和映射成手机号(MSISDN)，以及执行相反方向的映射。
（一）、SIM card 号的修改：
SIM card号就是印制在SIM上的一串数字。
读SIM card号的AT命令为：AT+CRSM=176,12258,0,0,10
因此在andorid模拟其源码中找到该AT命令——在sim_card.c中：
const char*
asimcard_io( ASimCard sim, const char* cmd )
{
int nn;
#if ENABLE_DYNAMIC_RECORDS
int command, id, p1, p2, p3;
#endif
static const struct { const char* cmd; const char* answer; } answers[] =
{
{ "+CRSM=192,28436,0,0,15", "+CRSM: 144,0," },
{ "+CRSM=176,28436,0,0,20", "+CRSM: 144,0," },
{ "+CRSM=192,28433,0,0,15", "+CRSM: 144,0," },
{ "+CRSM=176,28433,0,0,1", "+CRSM: 144,0,55" },
{ "+CRSM=192,12258,0,0,15", "+CRSM: 144,0," },
{ "+CRSM=176,12258,0,0,10", "+CRSM: 144,0,98101430121181157002" },
...
...
因此用UE二进制方式打开emulator-arm.exe 或 emulator-x86.exe，并搜索字符串“98101430121181157002”，然后将其修改成需要的SIM card号。
比如：
00209a00h: 31 30 00 00 2B 43 52 53 4D 3A 20 31 34 34 2C 30 ; 10..+CRSM: 144,0
00209a10h: 2C 39 38 31 30 31 34 33 30 31 32 31 31 38 31 31 ; ,981014301211811
00209a20h: 35 37 30 30 32 00 2B 43 52 53 4D 3D 31 39 32 2C ; 57002.+CRSM=192,
（二）、IMEI、IMSI号的修改：
Java代码中获取手机的IMEI号与ISMI号途径为：
TelephonyManager manager = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
String imei = manager.getDeviceId();
String imsi = manager.getSubscriberId();
在android的源码树中找到类TelephonyManager的实现：
成员函数getDeviceId：
/**
* Returns the unique device ID, for example, the IMEI for GSM and the MEID
* or ESN for CDMA phones. Return null if device ID is not available.
*
* <p>Requires Permission:
* {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
*/
public String getDeviceId() {
try {
return getSubscriberInfo().getDeviceId();
} catch (RemoteException ex) {
return null;
} catch (NullPointerException ex) {
return null;
}
}
成员函数getSubscriberId：
/**
* Returns the unique subscriber ID, for example, the IMSI for a GSM phone.
* Return null if it is unavailable.
* <p>
* Requires Permission:
* {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
*/
public String getSubscriberId() {
try {
return getSubscriberInfo().getSubscriberId();
} catch (RemoteException ex) {
return null;
} catch (NullPointerException ex) {
// This could happen before phone restarts e to crashing
return null;
}
}
上面两个成员函数最终调用共同的一个私有成员函数getSubscriberInfo()：
private IPhoneSubInfo getSubscriberInfo() {
// get it each time because that process crashes a lot
return IPhoneSubInfo.Stub.asInterface(ServiceManager.getService("iphonesubinfo"));
}
而上面私有函数getSubscriberInfo获取的手机IMSI和IMEI号被硬编码在文件android_modem.c中：
/* the Android GSM stack checks that the operator's name has changed
* when roaming is on. If not, it will not update the Roaming status icon
*
* this means that we need to emulate two distinct operators:
* - the first one for the 'home' registration state, must also correspond
* to the emulated user's IMEI
*
* - the second one for the 'roaming' registration state, must have a
* different name and MCC/MNC
*/
#define OPERATOR_HOME_INDEX 0
#define OPERATOR_HOME_MCC 310
#define OPERATOR_HOME_MNC 260
#define OPERATOR_HOME_NAME "Android"
#define OPERATOR_HOME_MCCMNC STRINGIFY(OPERATOR_HOME_MCC) \
STRINGIFY(OPERATOR_HOME_MNC)
#define OPERATOR_ROAMING_INDEX 1
#define OPERATOR_ROAMING_MCC 310
#define OPERATOR_ROAMING_MNC 295
#define OPERATOR_ROAMING_NAME "TelKila"
#define OPERATOR_ROAMING_MCCMNC STRINGIFY(OPERATOR_ROAMING_MCC) \
STRINGIFY(OPERATOR_ROAMING_MNC)
/* a function used to deal with a non-trivial request */
typedef const char* (*ResponseHandler)(const char* cmd, AModem modem);
static const struct {
const char* cmd; /* command coming from libreference-ril.so, if first
character is '!', then the rest is a prefix only */
const char* answer; /* default answer, NULL if needs specific handling or
if OK is good enough */
ResponseHandler handler; /* specific handler, ignored if 'answer' is not NULL,
NULL if OK is good enough */
} sDefaultResponses[] =
{
/* see onRadioPowerOn() */
{ "%CPHS=1", NULL, NULL },
{ "%CTZV=1", NULL, NULL },
...
{ "!+VTS=", NULL, handleSetDialTone },
{ "+CIMI", OPERATOR_HOME_MCCMNC "000000000", NULL }, /* request internation subscriber identification number */
{ "+CGSN", "000000000000000", NULL }, /* request model version */
{ "+CUSD=2",NULL, NULL }, /* Cancel USSD */
...
/* end of list */
{NULL, NULL, NULL}
};
因此用UE二进制方式打开emulator-arm.exe 或 emulator-x86.exe，并搜索字符串"+CGSN"修改为需要的IMEI号；搜索"+CIMI"修改为需要的IMSI号。需要注意的是 IMSI 号的头六个数字"310260"不能修改，否则模拟器无法与网络连接。
例如：
001fc700h: 33 00 41 00 48 00 21 2B 56 54 53 3D 00 2B 43 49 ; 3.A.H.!+VTS=.+CI
001fc710h: 4D 49 00 33 31 30 32 36 30 30 30 30 30 30 30 30 ; MI.3102600000000
001fc720h: 30 30 00 2B 43 47 53 4E 00 30 30 30 30 30 30 30 ; 00.+CGSN.0000000
001fc730h: 30 30 30 30 30 30 30 30 00 2B 43 55 53 44 3D 32 ; 00000000.+CUSD=2
⑶ android动态创建的Textview怎么获取或者给他设置一个ID
ID本身是个int类型的，就算设置也只能给一个随机不重复的int数字，但是如果想要通过字符串去实现，用个HashMap把键值对存下来
final static HashMap<String, Integer> listView = new HashMap<String, Integer>();
赋值ID linearLayout.setId(唯一id);
键值对 listView.put(字符串id, 前边定义的唯一int ID);
获取：
public static Integer getViewIdById(String id){
if (listView.containsKey(id))
return listView.get(id);
else
return -1;
}
⑷ android 怎么判断当前id
下面是通过linux命令来获取进程ID的
Process psProcess = Runtime.getRuntime().exec("sh");
DataOutputStream out = new DataOutputStream( psProcess.getOutputStream() );
InputStream is = psProcess.getInputStream();
out.writeBytes( "ps | grep 'vpnloader' | cut -c 10-14\n" );
out.writeBytes( "ps\n" );
out.flush();
try {
psProcess.waitFor();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();}
if(is.read() != 0)
{
byte firstByte = (byte)is.read();
int available = is.available();
byte[] characters = new byte[available + 1];
characters[0] = firstByte;
is.read( characters, 1, available );
String re = new String( characters );
｝
⑸ Android L 判断是否有NavigationBar的方式
Android L中，如何得知是否有虚拟按键呢。查看了下PhoneWindowManager中的代码，这会在这整理处如下方法：
获取是否存在NavigationBar：
private static boolean checkDeviceHasNavigationBar(Context context) {
boolean hasNavigationBar = false;
Resources rs = context.getResources();
int id = rs.getIdentifier("config_showNavigationBar", "bool", "android");
if (id > 0) {
hasNavigationBar = rs.getBoolean(id);
}
try {
Class systemPropertiesClass = Class.forName("android.os.SystemProperties");
Method m = systemPropertiesClass.getMethod("get", String.class);
String navBarOverride = (String) m.invoke(systemPropertiesClass, "qemu.hw.mainkeys");
if ("1".equals(navBarOverride)) {
hasNavigationBar = false;
} else if ("0".equals(navBarOverride)) {
hasNavigationBar = true;
}
} catch (Exception e) {
Log.w(TAG, e);
}
return hasNavigationBar;
}
获取NavigationBar的高度：
private static int getNavigationBarHeight(Context context) {
int navigationBarHeight = 0;
Resources rs = context.getResources();
int id = rs.getIdentifier("navigation_bar_height", "dimen", "android");
if (id > 0 && checkDeviceHasNavigationBar(context)) {
navigationBarHeight = rs.getDimensionPixelSize(id);
}
return navigationBarHeight;
}
⑹ android studio if语句问题，要求布尔型的，可我按钮是int型，按老师课上讲的打出来的，求解
==是等于，=是赋值
⑺ 如何获取 android device id
因为在工作中要统计一些用户的数据，以及爱好等等..所以就要统计不同用户!所以刚开始用device id 如下:/**
Java代码
* 获取机器唯一标识
* @param _context
* @return
*/
public String getLocaldeviceId(Context _context){
TelephonyManager tm = (TelephonyManager) _context
.getSystemService(Context.TELEPHONY_SERVICE);
String deviceId = tm.getDeviceId();
if (deviceId == null
|| deviceId.trim().length() == 0) {
deviceId = String.valueOf(System
.currentTimeMillis());
}
return deviceId ;
}
我理解为类似手机的出厂标号，但是有很多的是无法获取到device id的！所以，就要获取mac地址
mac地址很好理解，就是用户上网的上网许可证，这个买手机的时候，你翻开电池就知道里面有一个标签！
下面是获取mac地址的代码
Java代码
/**
* 获取mac地址
* @param context
* @return
*/
public String getLocalMacAddress(Context context) {
WifiManager wifi = (WifiManager) context.getSystemService(
Context.WIFI_SERVICE);
WifiInfo info = wifi.getConnectionInfo();
return info.getMacAddress();
}