1.系统权限

android:sharedUserId=“android.uid.system”

2.签名

通过手动签名的方式，用系统的签名文件为程序签名解决签名的问题，将程序加入到系统进程中。

3.通过反射切换系统语言

//调用

// changeSystemLanguage("zh", "CN");

public void changeSystemLanguage(String language,String country) {

//Locale mLocale = new Locale("en", "ZA");

Locale mLocale = new Locale(language, country);

try {

Class iActivityManager = Class.forName("android.app.IActivityManager");

Class activityManagerNative = Class.forName("android.app.ActivityManagerNative");

Method getDefault = activityManagerNative.getDeclaredMethod("getDefault");

Object objIActMag = getDefault.invoke(activityManagerNative);

Method getConfiguration = iActivityManager.getDeclaredMethod("getConfiguration");

Configuration config = (Configuration) getConfiguration.invoke(objIActMag);

config.locale = mLocale;

Class clzConfig = Class.forName("android.content.res.Configuration");

java.lang.reflect.Field userSetLocale = clzConfig.getField("userSetLocale");

userSetLocale.set(config, true);

Class[] clzParams = {Configuration.class};

Method updateConfiguration = iActivityManager.getDeclaredMethod("updateConfiguration", clzParams);

updateConfiguration.invoke(objIActMag, config);

BackupManager.dataChanged("com.android.providers.settings");

} catch (Exception e) {

e.printStackTrace();

}

}

5.各语言关键字

zh_CN en_AU en_IN fr_FR it_IT es_ES et_EE de_DE nl_NL cs_CZ pl_PL ja_JP

zh_TW en_US zh_HK ru_RU ko_KR nb_NO es_US da_DK el_GR tr_TR pt_PT pt_BR rm_CH sv_SE bg_BG

ca_ES en_GB fi_FI hi_IN hr_HR hu_HU in_ID iw_IL lt_LT lv_LV ro_RO sk_SK sl_SI sr_RS uk_UA

vi_VN tl_PH ar_EG fa_IR th_TH sw_TZ ms_MY af_ZA zu_ZA am_ET hi_IN en_XA ar_XB fr_CA km_KH

lo_LA ne_NP si_LK mn_MN hy_AM az_AZ ka_GE my_MM mr_IN ml_IN is_IS mk_MK ky_KG eu_ES gl_ES

bn_BD ta_IN kn_IN te_IN uz_UZ ur_PK kk_KZ