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Android修改记录《一》

启动其他Activity
private void startOtherActivity(Context context){
Intent i = new Intent();
ComponentName comp =
new ComponentName("packageName","PackageName+ActivityName");
i.setComponent(comp);
i.setAction("android.intent.action.MAIN");
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
打开gps 需要添加权限，并且是系统apk
android.permission.WRITE_SECURE_SETTINGS
Settings.Secure.setLocationProviderEnabled(context.getContentResolver(), LocationManager.GPS_PROVIDER, true);
Settings.Secure.putInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE,android.provider.Settings.Secure.LOCATION_MODE_HIGH_ACCURACY);
第二种方式
Intent GPSIntent =new Intent();
GPSIntent.setClassName("com.android.settings",
"com.android.settings.widget.SettingsAppWidgetProvider");
GPSIntent.addCategory("android.intent.category.ALTERNATIVE");
GPSIntent.setData(Uri.parse("custom:3"));
try {
PendingIntent.getBroadcast(this, 0, GPSIntent, 0).send();
}catch (PendingIntent.CanceledException e) {
e.printStackTrace();
}
关闭gps
Settings.Secure.putInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE
, android.provider.Settings.Secure.LOCATION_MODE_OFF);
【Android修改记录《一》】同样也需要添加权限，作为系统apk
获取gps状态
public boolean getGPSState( ) {
LocationManager locationManager= (LocationManager)this.getSystemService(Context.LOCATION_SERVICE);
boolean gps = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
boolean network = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (gps || network) return true;
return false;
}
开关wifi
需要添加权限
android.permission.CHANGE_WIFI_STATE + android.permission.ACCESS_WIFI_STATE
private void switchWiFi(Context context, boolean enabled) {
WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
wm.setWifiEnabled(enabled);
}
限制某个应用的网络权限
需要在源码里面编译，不知道能不能通过反射来实现
PackageManager pm = context.getPackageManager();
List apps = pm.getInstalledApplications(PackageManager.GET_META_DATA);
int uid =0;
for (ApplicationInfo app:apps){
if(app !=null &&app.packageName.equals("packageName")){
uid = app.uid;
}
}
INetworkManagementService network = INetworkManagementService.Stub.asInterface(
ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE));
if ( (uid !=0) && (network !=null) ) {
try{
network.setFirewallUidRule(FIREWALL_CHAIN_STANDBY,uid,NetworkPolicyManager.FIREWALL_RULE_DENY);
//FIREWALL_CHAIN_STANDBY FIREWALL_RULE_DENY都是2
}catch(RemoteException e){
e.printStackTrace();
}
}
开关飞行模式
private void setAirplaneModeOn(boolean enabling,Context context) {
Settings.Global.putInt(context.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON,
enabling ?1 :0);
Intent intent =new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
intent.putExtra("state", enabling);
context.sendBroadcast(intent);
}
需要添加android.permission.WRITE_SECURE_SETTINGS权限
时间转换
private long turnTime(String time){
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
long millionSeconds =0;
try {
millionSeconds = sdf.parse(time).getTime();
} catch (ParseException e) {
e.printStackTrace();
}
return millionSeconds;
}
new SimpleDateFormat("yyyy-MM-dd hh:mm:ss").format(SystemClock.currentThreadTimeMillis());
某一天的时间设置 Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.setTimeZone(TimeZone.getTimeZone("GMT+8"));
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.HOUR_OF_DAY, 4);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
long selectTime = calendar.getTimeInMillis();
wifi开关
private void openOrCloseWifiAP(Context context,boolean status){
WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
wifiManager.setWifiApEnabled(wifiManager.getWifiApConfiguration(),status);
}

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