Example usage for java.lang Class getDeclaredField

Introduction

In this page you can find the example usage for java.lang Class getDeclaredField.

Prototype

@CallerSensitive
public Field getDeclaredField(String name) throws NoSuchFieldException, SecurityException 

Source Link

Document

Returns a Field object that reflects the specified declared field of the class or interface represented by this Class object.

Usage

From source file:com.libframework.annotation.util.OtherUtils.java

/**
 * @param context if null, use the default format
 *                (Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 %sSafari/534.30).
 * @return/* ww w .  j  a va 2 s. c  om*/
 */
public static String getUserAgent(Context context) {
    String webUserAgent = null;
    if (context != null) {
        try {
            Class<?> sysResCls = Class.forName("com.android.internal.R$string");
            Field webUserAgentField = sysResCls.getDeclaredField("web_user_agent");
            Integer resId = (Integer) webUserAgentField.get(null);
            webUserAgent = context.getString(resId);
        } catch (Throwable ignored) {
        }
    }
    if (TextUtils.isEmpty(webUserAgent)) {
        webUserAgent = "Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 %sSafari/533.1";
    }

    Locale locale = Locale.getDefault();
    StringBuffer buffer = new StringBuffer();
    // Add version
    final String version = Build.VERSION.RELEASE;
    if (version.length() > 0) {
        buffer.append(version);
    } else {
        // default to "1.0"
        buffer.append("1.0");
    }
    buffer.append("; ");
    final String language = locale.getLanguage();
    if (language != null) {
        buffer.append(language.toLowerCase(Locale.getDefault()));
        final String country = locale.getCountry();
        if (country != null) {
            buffer.append("-");
            buffer.append(country.toLowerCase(Locale.getDefault()));
        }
    } else {
        // default to "en"
        buffer.append("en");
    }
    // add the model for the release build
    if ("REL".equals(Build.VERSION.CODENAME)) {
        final String model = Build.MODEL;
        if (model.length() > 0) {
            buffer.append("; ");
            buffer.append(model);
        }
    }
    final String id = Build.ID;
    if (id.length() > 0) {
        buffer.append(" Build/");
        buffer.append(id);
    }
    return String.format(webUserAgent, buffer, "Mobile ");
}

---

From source file:com.ddiiyy.xydz.xutils.util.OtherUtils.java

/**
 * @param context if null, use the default format
 *                (Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 %sSafari/534.30).
 * @return/*  w  w  w  . ja v a2 s. c om*/
 */
@SuppressLint("DefaultLocale")
@SuppressWarnings("rawtypes")
public static String getUserAgent(Context context) {
    String webUserAgent = null;
    if (context != null) {
        try {
            Class sysResCls = Class.forName("com.android.internal.R$string");
            Field webUserAgentField = sysResCls.getDeclaredField("web_user_agent");
            Integer resId = (Integer) webUserAgentField.get(null);
            webUserAgent = context.getString(resId);
        } catch (Throwable ignored) {
        }
    }
    if (TextUtils.isEmpty(webUserAgent)) {
        webUserAgent = "Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 %sSafari/533.1";
    }

    Locale locale = Locale.getDefault();
    StringBuffer buffer = new StringBuffer();
    // Add version
    final String version = Build.VERSION.RELEASE;
    if (version.length() > 0) {
        buffer.append(version);
    } else {
        // default to "1.0"
        buffer.append("1.0");
    }
    buffer.append("; ");
    final String language = locale.getLanguage();
    if (language != null) {
        buffer.append(language.toLowerCase());
        final String country = locale.getCountry();
        if (country != null) {
            buffer.append("-");
            buffer.append(country.toLowerCase());
        }
    } else {
        // default to "en"
        buffer.append("en");
    }
    // add the model for the release build
    if ("REL".equals(Build.VERSION.CODENAME)) {
        final String model = Build.MODEL;
        if (model.length() > 0) {
            buffer.append("; ");
            buffer.append(model);
        }
    }
    final String id = Build.ID;
    if (id.length() > 0) {
        buffer.append(" Build/");
        buffer.append(id);
    }
    return String.format(webUserAgent, buffer, "Mobile ");
}

---

From source file:Main.java

public static boolean hasPermission(Context appContext, String appOpsServiceId) throws UnknownError {

    ApplicationInfo appInfo = appContext.getApplicationInfo();

    String pkg = appContext.getPackageName();
    int uid = appInfo.uid;
    Class appOpsClass = null;
    Object appOps = appContext.getSystemService("appops");

    try {//from   w ww . ja v  a  2  s  .c o m

        appOpsClass = Class.forName("android.app.AppOpsManager");

        Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE,
                String.class);

        Field opValue = appOpsClass.getDeclaredField(appOpsServiceId);

        int value = (int) opValue.getInt(Integer.class);
        Object result = checkOpNoThrowMethod.invoke(appOps, value, uid, pkg);

        return Integer.parseInt(result.toString()) == 0; // AppOpsManager.MODE_ALLOWED

    } catch (ClassNotFoundException e) {
        throw new UnknownError("class not found");
    } catch (NoSuchMethodException e) {
        throw new UnknownError("no such method");
    } catch (NoSuchFieldException e) {
        throw new UnknownError("no such field");
    } catch (InvocationTargetException e) {
        throw new UnknownError("invocation target");
    } catch (IllegalAccessException e) {
        throw new UnknownError("illegal access");
    }

}

---

From source file:com.feilong.commons.core.lang.reflect.FieldUtil.java

/**
 *  Field ?? Class ?./*ww  w  .j  a v a 2 s . c  om*/
 * 
 * @param clz
 *            clz
 * @param name
 *            ??
 * @return  Field ?? Class ?
 * @throws ReflectException
 *             the reflect exception
 * @see java.lang.Class#getDeclaredField(String)
 */
public static Field getDeclaredField(Class<?> clz, String name) throws ReflectException {
    try {
        Field field = clz.getDeclaredField(name);
        return field;
    } catch (Exception e) {
        log.error(e.getClass().getName(), e);
        throw new ReflectException(e);
    }
}

---

From source file:com.lidroid.xutils.utils.OtherUtils.java

/**
 * @param context if null, use the default format
 *                (Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 %sSafari/534.30).
 * @return//from   w  ww.  j a v a  2 s.c o m
 */
@SuppressLint("DefaultLocale")
public static String getUserAgent(Context context) {
    String webUserAgent = null;
    if (context != null) {
        try {
            Class<?> sysResCls = Class.forName("com.android.internal.R$string");
            Field webUserAgentField = sysResCls.getDeclaredField("web_user_agent");
            Integer resId = (Integer) webUserAgentField.get(null);
            webUserAgent = context.getString(resId);
        } catch (Throwable ignored) {
        }
    }
    if (TextUtils.isEmpty(webUserAgent)) {
        webUserAgent = "Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 %sSafari/533.1";
    }

    Locale locale = Locale.getDefault();
    StringBuffer buffer = new StringBuffer();
    // Add version
    final String version = Build.VERSION.RELEASE;
    if (version.length() > 0) {
        buffer.append(version);
    } else {
        // default to "1.0"
        buffer.append("1.0");
    }
    buffer.append("; ");
    final String language = locale.getLanguage();
    if (language != null) {
        buffer.append(language.toLowerCase());
        final String country = locale.getCountry();
        if (country != null) {
            buffer.append("-");
            buffer.append(country.toLowerCase());
        }
    } else {
        // default to "en"
        buffer.append("en");
    }
    // add the model for the release build
    if ("REL".equals(Build.VERSION.CODENAME)) {
        final String model = Build.MODEL;
        if (model.length() > 0) {
            buffer.append("; ");
            buffer.append(model);
        }
    }
    final String id = Build.ID;
    if (id.length() > 0) {
        buffer.append(" Build/");
        buffer.append(id);
    }
    return String.format(webUserAgent, buffer, "Mobile ");
}

---

From source file:com.ruint.core.utils.OtherUtils.java

/**
 * @param context/*from   www. j  a  v a  2  s.c  o  m*/
 *          if null, use the default format (Mozilla/5.0 (Linux; U; Android
 *          %s) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0
 *          %sSafari/534.30).
 * @return
 */
@SuppressWarnings("rawtypes")
public static String getUserAgent(Context context) {
    String webUserAgent = null;
    if (context != null) {
        try {
            Class sysResCls = Class.forName("com.android.internal.R$string");
            Field webUserAgentField = sysResCls.getDeclaredField("web_user_agent");
            Integer resId = (Integer) webUserAgentField.get(null);
            webUserAgent = context.getString(resId);
        } catch (Throwable ignored) {
        }
    }
    if (TextUtils.isEmpty(webUserAgent)) {
        webUserAgent = "Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 %sSafari/533.1";
    }

    Locale locale = Locale.getDefault();
    StringBuffer buffer = new StringBuffer();
    // Add version
    final String version = Build.VERSION.RELEASE;
    if (version.length() > 0) {
        buffer.append(version);
    } else {
        // default to "1.0"
        buffer.append("1.0");
    }
    buffer.append("; ");
    final String language = locale.getLanguage();
    if (language != null) {
        buffer.append(language.toLowerCase());
        final String country = locale.getCountry();
        if (country != null) {
            buffer.append("-");
            buffer.append(country.toLowerCase());
        }
    } else {
        // default to "en"
        buffer.append("en");
    }
    // add the model for the release build
    if ("REL".equals(Build.VERSION.CODENAME)) {
        final String model = Build.MODEL;
        if (model.length() > 0) {
            buffer.append("; ");
            buffer.append(model);
        }
    }
    final String id = Build.ID;
    if (id.length() > 0) {
        buffer.append(" Build/");
        buffer.append(id);
    }
    return String.format(webUserAgent, buffer, "Mobile ");
}

---

From source file:com.relicum.ipsum.Reflection.ReflectionUtil.java

/**
 * Gets a {@link Field} in a given {@link Class} object.
 *
 * @param clazz Class object/*from  w  w  w. ja  v a2 s.  c o m*/
 * @param name  Field nameame
 * @return The field, or null if none exists.
 */
public static final Field getField(Class<?> clazz, String name) {
    Validate.notNull(clazz, "clazz cannot be null!");
    Validate.notNull(name, "name cannot be null!");

    try {
        Field field = clazz.getDeclaredField(name);
        if (field != null)
            return field;

        return clazz.getField(name);
    } catch (Throwable ex) {
    }
    return null;
}

---

From source file:io.servicecomb.config.TestConfigUtil.java

@SuppressWarnings("unchecked")
private static void setEnv(String key, String value) throws IllegalAccessException, NoSuchFieldException {
    Class<?>[] classes = Collections.class.getDeclaredClasses();
    Map<String, String> env = System.getenv();
    for (Class<?> cl : classes) {
        if ("java.util.Collections$UnmodifiableMap".equals(cl.getName())) {
            Field field = cl.getDeclaredField("m");
            field.setAccessible(true);/*from   w w  w .  j  a  v a 2  s. com*/
            Object obj = field.get(env);
            Map<String, String> map = (Map<String, String>) obj;
            map.put(key, value);
        }
    }
}

---

From source file:edu.umd.cs.marmoset.utilities.MarmosetUtilities.java

/**
 * Uses reflection to extract the pid, a private field of the private class UNIXProcess.
 * This will fail on any non-Unix platform that doesn't use UNIXProcess.  It may
 * fail if the UNIXProcess class changes at all.  It may fail anyway for unpredictable
 * reasons./*w  w w. j a  v  a  2  s  .  c  o  m*/
 * @param process The process
 * @return the pid of this process
 */
public static int getPid(Process process) {
    try {
        Class<? extends Process> processClass = process.getClass();
        Field pidField = processClass.getDeclaredField("pid");
        pidField.setAccessible(true);
        return pidField.getInt(process);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

---

From source file:Main.java

/**
 * get field form object and it's parent
 *///w  w  w.j  av a2  s . c o m
public static Field getDeclaredField(Object object, String fieldName) {
    Field field = null;

    Class<?> clazz = object.getClass();

    for (; clazz != Object.class; clazz = clazz.getSuperclass()) {
        try {
            field = clazz.getDeclaredField(fieldName);
            return field;
        } catch (Exception e) {

        }
    }

    return null;
}

---

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