Android快速开发之PackageUtils，PreferencesUtils
Android包相关工具类，可用于(root)安装应用、(root)卸载应用、判断是否系统应用等，如：install(Context, String) 安装应用，如果是系统应用或已经root，则静默安装，否则一般安装 uninstall(Context, String) 卸载应用，如果是系统应用或已经root，则静默卸载，否则一般卸载 isSystemApplication(Context, String) 判断应用是否为系统应用
import java.io.File;
import java.util.List;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Build;
import android.provider.Settings;
import android.util.Log;
import cn.trinea.android.common.util.ShellUtils.CommandResult;
/**
* PackageUtils
*
* Install package
* - {@link PackageUtils#installNormal(Context, String)}
* - {@link PackageUtils#installSilent(Context, String)}
* - {@link PackageUtils#install(Context, String)}
*
*
* Uninstall package
* - {@link PackageUtils#uninstallNormal(Context, String)}
* - {@link PackageUtils#uninstallSilent(Context, String)}
* - {@link PackageUtils#uninstall(Context, String)}
*
*
* Is system application
* - {@link PackageUtils#isSystemApplication(Context)}
* - {@link PackageUtils#isSystemApplication(Context, String)}
* - {@link PackageUtils#isSystemApplication(PackageManager, String)}
*
*
* Others
* - {@link PackageUtils#getInstallLocation()} get system install location
* - {@link PackageUtils#isTopActivity(Context, String)} whether the app whost package's name is packageName is on the
* top of the stack
* - {@link PackageUtils#startInstalledAppDetails(Context, String)} start InstalledAppDetails Activity
*/
public class PackageUtils {
public static final String TAG = "PackageUtils";
private PackageUtils() {
throw new AssertionError();
}
/**
* App installation location settings values, same to {@link #PackageHelper}
*/
public static final int APP_INSTALL_AUTO = 0;
public static final int APP_INSTALL_INTERNAL = 1;
public static final int APP_INSTALL_EXTERNAL = 2;
/**
* install according conditions
*
* - if system application or rooted, see {@link #installSilent(Context, String)}
* - else see {@link #installNormal(Context, String)}
*
*
* @param context
* @param filePath
* @return
*/
public static final int install(Context context, String filePath) {
if (PackageUtils.isSystemApplication(context) || ShellUtils.checkRootPermission()) {
return installSilent(context, filePath);
}
return installNormal(context, filePath) ? INSTALL_SUCCEEDED : INSTALL_FAILED_INVALID_URI;
}
/**
* install package normal by system intent
*
* @param context
* @param filePath file path of package
* @return whether apk exist
*/
public static boolean installNormal(Context context, String filePath) {
Intent i = new Intent(Intent.ACTION_VIEW);
File file = new File(filePath);
if (file == null || !file.exists() || !file.isFile() || file.length() <= 0) {
return false;
}
i.setDataAndType(Uri.parse("file://" + filePath), "application/vnd.android.package-archive");
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
return true;
}
/**
* install package silent by root
*
* Attentions:
* - Don't call this on the ui thread, it may costs some times.
* - You should add android.permission.INSTALL_PACKAGES in manifest, so no need to request root
* permission, if you are system app.
* - Default pm install params is "-r".
*
*
* @param context
* @param filePath file path of package
* @return {@link PackageUtils#INSTALL_SUCCEEDED} means install success, other means failed. details see
* {@link PackageUtils}.INSTALL_FAILED_*. same to {@link PackageManager}.INSTALL_*
* @see #installSilent(Context, String, String)
*/
public static int installSilent(Context context, String filePath) {
return installSilent(context, filePath, " -r " + getInstallLocationParams());
}
/**
* install package silent by root
*
* Attentions:
* - Don't call this on the ui thread, it may costs some times.
* - You should add android.permission.INSTALL_PACKAGES in manifest, so no need to request root
* permission, if you are system app.
*
*
* @param context
* @param filePath file path of package
* @param pmParams pm install params
* @return {@link PackageUtils#INSTALL_SUCCEEDED} means install success, other means failed. details see
* {@link PackageUtils}.INSTALL_FAILED_*. same to {@link PackageManager}.INSTALL_*
*/
public static int installSilent(Context context, String filePath, String pmParams) {
if (filePath == null || filePath.length() == 0) {
return INSTALL_FAILED_INVALID_URI;
}
File file = new File(filePath);
if (file == null || file.length() <= 0 || !file.exists() || !file.isFile()) {
return INSTALL_FAILED_INVALID_URI;
}
/**
* if context is system app, don't need root permission, but should add
* - if system application or rooted, see {@link #uninstallSilent(Context, String)}
* - else see {@link #uninstallNormal(Context, String)}
*
*
* @param context
* @param packageName package name of app
* @return whether package name is empty
* @return
*/
public static final int uninstall(Context context, String packageName) {
if (PackageUtils.isSystemApplication(context) || ShellUtils.checkRootPermission()) {
return uninstallSilent(context, packageName);
}
return uninstallNormal(context, packageName) ? DELETE_SUCCEEDED : DELETE_FAILED_INVALID_PACKAGE;
}
/**
* uninstall package normal by system intent
*
* @param context
* @param packageName package name of app
* @return whether package name is empty
*/
public static boolean uninstallNormal(Context context, String packageName) {
if (packageName == null || packageName.length() == 0) {
return false;
}
Intent i = new Intent(Intent.ACTION_DELETE, Uri.parse(new StringBuilder(32).append("package:")
.append(packageName).toString()));
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
return true;
}
/**
* uninstall package and clear data of app silent by root
*
* @param context
* @param packageName package name of app
* @return
* @see #uninstallSilent(Context, String, boolean)
*/
public static int uninstallSilent(Context context, String packageName) {
return uninstallSilent(context, packageName, true);
}
/**
* uninstall package silent by root
*
* Attentions:
* - Don't call this on the ui thread, it may costs some times.
* - You should add android.permission.DELETE_PACKAGES in manifest, so no need to request root
* permission, if you are system app.
*
*
* @param context file path of package
* @param packageName package name of app
* @param isKeepData whether keep the data and cache directories around after package removal
* @return
* - {@link #DELETE_SUCCEEDED} means uninstall success
* - {@link #DELETE_FAILED_INTERNAL_ERROR} means internal error
* - {@link #DELETE_FAILED_INVALID_PACKAGE} means package name error
* - {@link #DELETE_FAILED_PERMISSION_DENIED} means permission denied
*/
public static int uninstallSilent(Context context, String packageName, boolean isKeepData) {
if (packageName == null || packageName.length() == 0) {
return DELETE_FAILED_INVALID_PACKAGE;
}
/**
* if context is system app, don't need root permission, but should add
* - if packageManager is null, return false
* - if package name is null or is empty, return false
* - if package name not exit, return false
* - if package name exit, but not system app, return false
* - else return true
*
*/
public static boolean isSystemApplication(PackageManager packageManager, String packageName) {
if (packageManager == null || packageName == null || packageName.length() == 0) {
return false;
}
try {
ApplicationInfo app = packageManager.getApplicationInfo(packageName, 0);
return (app != null && (app.flags & ApplicationInfo.FLAG_SYSTEM) > 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
}
return false;
}
/**
* whether the app whost package's name is packageName is on the top of the stack
*
* Attentions:
* - You should add android.permission.GET_TASKS in manifest
*
*
* @param context
* @param packageName
* @return if params error or task stack is null, return null, otherwise retun whether the app is on the top of
* stack
*/
public static Boolean isTopActivity(Context context, String packageName) {
if (context == null || StringUtils.isEmpty(packageName)) {
return null;
}
ActivityManager activityManager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
List tasksInfo = activityManager.getRunningTasks(1);
if (ListUtils.isEmpty(tasksInfo)) {
return null;
}
try {
return packageName.equals(tasksInfo.get(0).topActivity.getPackageName());
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* get app version code
*
* @param context
* @return
*/
public static int getAppVersionCode(Context context) {
if (context != null) {
PackageManager pm = context.getPackageManager();
if (pm != null) {
PackageInfo pi;
try {
pi = pm.getPackageInfo(context.getPackageName(), 0);
if (pi != null) {
return pi.versionCode;
}
} catch (NameNotFoundException e) {
e.printStackTrace();
}
}
}
return -1;
}
/**
* get system install location
* can be set by System Menu Setting->Storage->Prefered install location
*
* @return
* @see {@link IPackageManager#getInstallLocation()}
*/
public static int getInstallLocation() {
CommandResult commandResult = ShellUtils.execCommand(
"LD_LIBRARY_PATH=/vendor/lib*:/system/lib* pm get-install-location", false, true);
if (commandResult.result == 0 && commandResult.successMsg != null && commandResult.successMsg.length() > 0) {
try {
int location = Integer.parseInt(commandResult.successMsg.substring(0, 1));
switch (location) {
case APP_INSTALL_INTERNAL:
return APP_INSTALL_INTERNAL;
case APP_INSTALL_EXTERNAL:
return APP_INSTALL_EXTERNAL;
}
} catch (NumberFormatException e) {
e.printStackTrace();
Log.e(TAG, "pm get-install-location error");
}
}
return APP_INSTALL_AUTO;
}
/**
* get params for pm install location
*
* @return
*/
private static String getInstallLocationParams() {
int location = getInstallLocation();
switch (location) {
case APP_INSTALL_INTERNAL:
return "-f";
case APP_INSTALL_EXTERNAL:
return "-s";
}
return "";
}
/**
* start InstalledAppDetails Activity
*
* @param context
* @param packageName
*/
public static void startInstalledAppDetails(Context context, String packageName) {
Intent intent = new Intent();
int sdkVersion = Build.VERSION.SDK_INT;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.setData(Uri.fromParts("package", packageName, null));
} else {
intent.setAction(Intent.ACTION_VIEW);
intent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
intent.putExtra((sdkVersion == Build.VERSION_CODES.FROYO ? "pkg"
: "com.android.settings.ApplicationPkgName"), packageName);
}
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
/**
* Installation return code
* install success.
*/
public static final int INSTALL_SUCCEEDED = 1;
/**
* Installation return code
* the package is already installed.
*/
public static final int INSTALL_FAILED_ALREADY_EXISTS = -1;
/**
* Installation return code
* the package archive file is invalid.
*/
public static final int INSTALL_FAILED_INVALID_APK = -2;
/**
* Installation return code
* the URI passed in is invalid.
*/
public static final int INSTALL_FAILED_INVALID_URI = -3;
/**
* Installation return code
* the package manager service found that the device didn't have enough storage space to install the app.
*/
public static final int INSTALL_FAILED_INSUFFICIENT_STORAGE = -4;
/**
* Installation return code
* a package is already installed with the same name.
*/
public static final int INSTALL_FAILED_DUPLICATE_PACKAGE = -5;
/**
* Installation return code
* the requested shared user does not exist.
*/
public static final int INSTALL_FAILED_NO_SHARED_USER = -6;
/**
* Installation return code
* a previously installed package of the same name has a different signature than the new package (and the old
* package's data was not removed).
*/
public static final int INSTALL_FAILED_UPDATE_INCOMPATIBLE = -7;
/**
* Installation return code
* the new package is requested a shared user which is already installed on the device and does not have matching
* signature.
*/
public static final int INSTALL_FAILED_SHARED_USER_INCOMPATIBLE = -8;
/**
* Installation return code
* the new package uses a shared library that is not available.
*/
public static final int INSTALL_FAILED_MISSING_SHARED_LIBRARY = -9;
/**
* Installation return code
* the new package uses a shared library that is not available.
*/
public static final int INSTALL_FAILED_REPLACE_COULDNT_DELETE = -10;
/**
* Installation return code
* the new package failed while optimizing and validating its dex files, either because there was not enough storage
* or the validation failed.
*/
public static final int INSTALL_FAILED_DEXOPT = -11;
/**
* Installation return code
* the new package failed because the current SDK version is older than that required by the package.
*/
public static final int INSTALL_FAILED_OLDER_SDK = -12;
/**
* Installation return code
* the new package failed because it contains a content provider with the same authority as a provider already
* installed in the system.
*/
public static final int INSTALL_FAILED_CONFLICTING_PROVIDER = -13;
/**
* Installation return code
* the new package failed because the current SDK version is newer than that required by the package.
*/
public static final int INSTALL_FAILED_NEWER_SDK = -14;
/**
* Installation return code
* the new package failed because it has specified that it is a test-only package and the caller has not supplied
* the {@link #INSTALL_ALLOW_TEST} flag.
*/
public static final int INSTALL_FAILED_TEST_ONLY = -15;
/**
* Installation return code
* the package being installed contains native code, but none that is compatible with the the device's CPU_ABI.
*/
public static final int INSTALL_FAILED_CPU_ABI_INCOMPATIBLE = -16;
/**
* Installation return code
* the new package uses a feature that is not available.
*/
public static final int INSTALL_FAILED_MISSING_FEATURE = -17;
/**
* Installation return code
* a secure container mount point couldn't be accessed on external media.
*/
public static final int INSTALL_FAILED_CONTAINER_ERROR = -18;
/**
* Installation return code
* the new package couldn't be installed in the specified install location.
*/
public static final int INSTALL_FAILED_INVALID_INSTALL_LOCATION = -19;
/**
* Installation return code
* the new package couldn't be installed in the specified install location because the media is not available.
*/
public static final int INSTALL_FAILED_MEDIA_UNAVAILABLE = -20;
/**
* Installation return code
* the new package couldn't be installed because the verification timed out.
*/
public static final int INSTALL_FAILED_VERIFICATION_TIMEOUT = -21;
/**
* Installation return code
* the new package couldn't be installed because the verification did not succeed.
*/
public static final int INSTALL_FAILED_VERIFICATION_FAILURE = -22;
/**
* Installation return code
* the package changed from what the calling program expected.
*/
public static final int INSTALL_FAILED_PACKAGE_CHANGED = -23;
/**
* Installation return code
* the new package is assigned a different UID than it previously held.
*/
public static final int INSTALL_FAILED_UID_CHANGED = -24;
/**
* Installation return code
* if the parser was given a path that is not a file, or does not end with the expected '.apk' extension.
*/
public static final int INSTALL_PARSE_FAILED_NOT_APK = -100;
/**
* Installation return code
* if the parser was unable to retrieve the AndroidManifest.xml file.
*/
public static final int INSTALL_PARSE_FAILED_BAD_MANIFEST = -101;
/**
* Installation return code
* if the parser encountered an unexpected exception.
*/
public static final int INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION = -102;
/**
* Installation return code
* if the parser did not find any certificates in the .apk.
*/
public static final int INSTALL_PARSE_FAILED_NO_CERTIFICATES = -103;
/**
* Installation return code
* if the parser found inconsistent certificates on the files in the .apk.
*/
public static final int INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES = -104;
/**
* Installation return code
* if the parser encountered a CertificateEncodingException in one of the files in the .apk.
*/
public static final int INSTALL_PARSE_FAILED_CERTIFICATE_ENCODING = -105;
/**
* Installation return code
* if the parser encountered a bad or missing package name in the manifest.
*/
public static final int INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME = -106;
/**
* Installation return code
* if the parser encountered a bad shared user id name in the manifest.
*/
public static final int INSTALL_PARSE_FAILED_BAD_SHARED_USER_ID = -107;
/**
* Installation return code
* if the parser encountered some structural problem in the manifest.
*/
public static final int INSTALL_PARSE_FAILED_MANIFEST_MALFORMED = -108;
/**
* Installation return code
* if the parser did not find any actionable tags (instrumentation or application) in the manifest.
*/
public static final int INSTALL_PARSE_FAILED_MANIFEST_EMPTY = -109;
/**
* Installation return code
* if the system failed to install the package because of system issues.
*/
public static final int INSTALL_FAILED_INTERNAL_ERROR = -110;
/**
* Installation return code
* other reason
*/
public static final int INSTALL_FAILED_OTHER = -1000000;
/**
* Uninstall return code
* uninstall success.
*/
public static final int DELETE_SUCCEEDED = 1;
/**
* Uninstall return code
* uninstall fail if the system failed to delete the package for an unspecified reason.
*/
public static final int DELETE_FAILED_INTERNAL_ERROR = -1;
/**
* Uninstall return code
* uninstall fail if the system failed to delete the package because it is the active DevicePolicy manager.
*/
public static final int DELETE_FAILED_DEVICE_POLICY_MANAGER = -2;
/**
* Uninstall return code
* uninstall fail if pcakge name is invalid
*/
public static final int DELETE_FAILED_INVALID_PACKAGE = -3;
/**
* Uninstall return code
* uninstall fail if permission denied
*/
public static final int DELETE_FAILED_PERMISSION_DENIED = -4;
} PreferencesUtils
Android SharedPreferences相关工具类，可用于方便的向SharedPreferences中读取和写入相关类型数据，如：putString(Context, String, String) 保存string类型数据
putInt(Context, String, int) 保存int类型数据
getString(Context, String) 获取string类型数据
getInt(Context, String) 获取int类型数据
可通过修改PREFERENCE_NAME变量修改preference name
import android.content.Context;
import android.content.SharedPreferences;
/**
* PreferencesUtils, easy to get or put data
*
* Preference Name
* - you can change preference name by {@link #PREFERENCE_NAME}
*
*
* Put Value
* - put string {@link #putString(Context, String, String)}
* - put int {@link #putInt(Context, String, int)}
* - put long {@link #putLong(Context, String, long)}
* - put float {@link #putFloat(Context, String, float)}
* - put boolean {@link #putBoolean(Context, String, boolean)}
*
*
* Get Value
* - get string {@link #getString(Context, String)}, {@link #getString(Context, String, String)}
* - get int {@link #getInt(Context, String)}, {@link #getInt(Context, String, int)}
* - get long {@link #getLong(Context, String)}, {@link #getLong(Context, String, long)}
* - get float {@link #getFloat(Context, String)}, {@link #getFloat(Context, String, float)}
* - get boolean {@link #getBoolean(Context, String)}, {@link #getBoolean(Context, String, boolean)}
*
*/
public class PreferencesUtils {
public static String PREFERENCE_NAME = "TrineaAndroidCommon";
private PreferencesUtils() {
throw new AssertionError();
}
/**
* put string preferences
*
* @param context
* @param key The name of the preference to modify
* @param value The new value for the preference
* @return True if the new values were successfully written to persistent storage.
*/
public static boolean putString(Context context, String key, String value) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putString(key, value);
return editor.commit();
}
/**
* get string preferences
*
* @param context
* @param key The name of the preference to retrieve
* @return The preference value if it exists, or null. Throws ClassCastException if there is a preference with this
* name that is not a string
* @see #getString(Context, String, String)
*/
public static String getString(Context context, String key) {
return getString(context, key, null);
}
/**
* get string preferences
*
* @param context
* @param key The name of the preference to retrieve
* @param defaultValue Value to return if this preference does not exist
* @return The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with
* this name that is not a string
*/
public static String getString(Context context, String key, String defaultValue) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
return settings.getString(key, defaultValue);
}
/**
* put int preferences
*
* @param context
* @param key The name of the preference to modify
* @param value The new value for the preference
* @return True if the new values were successfully written to persistent storage.
*/
public static boolean putInt(Context context, String key, int value) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putInt(key, value);
return editor.commit();
}
/**
* get int preferences
*
* @param context
* @param key The name of the preference to retrieve
* @return The preference value if it exists, or -1. Throws ClassCastException if there is a preference with this
* name that is not a int
* @see #getInt(Context, String, int)
*/
public static int getInt(Context context, String key) {
return getInt(context, key, -1);
}
/**
* get int preferences
*
* @param context
* @param key The name of the preference to retrieve
* @param defaultValue Value to return if this preference does not exist
* @return The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with
* this name that is not a int
*/
public static int getInt(Context context, String key, int defaultValue) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
return settings.getInt(key, defaultValue);
}
/**
* put long preferences
*
* @param context
* @param key The name of the preference to modify
* @param value The new value for the preference
* @return True if the new values were successfully written to persistent storage.
*/
public static boolean putLong(Context context, String key, long value) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putLong(key, value);
return editor.commit();
}
/**
* get long preferences
*
* @param context
* @param key The name of the preference to retrieve
* @return The preference value if it exists, or -1. Throws ClassCastException if there is a preference with this
* name that is not a long
* @see #getLong(Context, String, long)
*/
public static long getLong(Context context, String key) {
return getLong(context, key, -1);
}
/**
* get long preferences
*
* @param context
* @param key The name of the preference to retrieve
* @param defaultValue Value to return if this preference does not exist
* @return The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with
* this name that is not a long
*/
public static long getLong(Context context, String key, long defaultValue) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
return settings.getLong(key, defaultValue);
}
/**
* put float preferences
*
* @param context
* @param key The name of the preference to modify
* @param value The new value for the preference
* @return True if the new values were successfully written to persistent storage.
*/
public static boolean putFloat(Context context, String key, float value) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putFloat(key, value);
return editor.commit();
}
/**
* get float preferences
*
* @param context
* @param key The name of the preference to retrieve
* @return The preference value if it exists, or -1. Throws ClassCastException if there is a preference with this
* name that is not a float
* @see #getFloat(Context, String, float)
*/
public static float getFloat(Context context, String key) {
return getFloat(context, key, -1);
}
/**
* get float preferences
*
* @param context
* @param key The name of the preference to retrieve
* @param defaultValue Value to return if this preference does not exist
* @return The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with
* this name that is not a float
*/
public static float getFloat(Context context, String key, float defaultValue) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
return settings.getFloat(key, defaultValue);
}
/**
* put boolean preferences
*
* @param context
* @param key The name of the preference to modify
* @param value The new value for the preference
* @return True if the new values were successfully written to persistent storage.
*/
public static boolean putBoolean(Context context, String key, boolean value) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putBoolean(key, value);
return editor.commit();
}
/**
* get boolean preferences, default is false
*
* @param context
* @param key The name of the preference to retrieve
* @return The preference value if it exists, or false. Throws ClassCastException if there is a preference with this
* name that is not a boolean
* @see #getBoolean(Context, String, boolean)
*/
public static boolean getBoolean(Context context, String key) {
return getBoolean(context, key, false);
}
/**
* get boolean preferences
*
* @param context
* @param key The name of the preference to retrieve
* @param defaultValue Value to return if this preference does not exist
* @return The preference value if it exists, or defValue. Throws ClassCastException if there is a preference with
* this name that is not a boolean
*/
public static boolean getBoolean(Context context, String key, boolean defaultValue) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
return settings.getBoolean(key, defaultValue);
}
}