Example usage for android.content Context getClassLoader

Introduction

In this page you can find the example usage for android.content Context getClassLoader.

Prototype

public abstract ClassLoader getClassLoader();

Source Link

Document

Return a class loader you can use to retrieve classes in this package.

Usage

From source file:Main.java

static <T> T instantiateViewDelegate(Context context, String className) {
    try {//from  w  w  w  .ja v a 2s  .c o m
        Class<?> clazz = context.getClassLoader().loadClass(className);
        return newInstance(context, clazz, VIEW_DELEGATE_CONSTRUCTOR_SIGNATURE);
    } catch (Exception e) {
        Log.w(LOG_TAG, "Cannot instantiate class: " + className, e);
    }
    return null;
}

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From source file:Main.java

static <T> T instantiateTransformer(Context context, String className) {
    try {//from  w  ww .j av  a2s  .c o m
        Class<?> clazz = context.getClassLoader().loadClass(className);
        return newInstance(context, clazz, TRANSFORMER_CONSTRUCTOR_SIGNATURE);
    } catch (Exception e) {
        Log.w(LOG_TAG, "Cannot instantiate class: " + className, e);
    }
    return null;
}

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From source file:Main.java

public static String findJniLibrary(Context context, String libName) {
    String result = null;/*w w  w.  java  2  s.co m*/
    ClassLoader classLoader = (context.getClassLoader());
    if (classLoader != null) {
        try {
            Method findLibraryMethod = classLoader.getClass().getMethod("findLibrary",
                    new Class<?>[] { String.class });
            if (findLibraryMethod != null) {
                Object objPath = findLibraryMethod.invoke(classLoader, new Object[] { libName });
                if (objPath != null && objPath instanceof String) {
                    result = (String) objPath;
                }
            }
        } catch (Exception e) {
            Log.e(TAG, e.toString());
        }
    }

    return result;
}

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From source file:Main.java

public static String getSystemProperties(Context context, String str) throws IllegalArgumentException {
    try {/*from ww  w. j  av a  2  s .co  m*/
        Class loadClass = context.getClassLoader().loadClass("android.os.SystemProperties");
        return (String) loadClass.getMethod("get", String.class).invoke(loadClass, str);
    } catch (IllegalArgumentException e) {
        throw e;
    } catch (Exception e2) {
        return "";
    }
}

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From source file:Main.java

public static Object loadClass(Context context, String path) {
    try {//from   w  w  w .  j  ava  2 s  .  c o  m
        String dexPath = context.getApplicationInfo().sourceDir;
        PathClassLoader pathClassLoader = new PathClassLoader(dexPath, context.getClassLoader());
        Class<?> c = Class.forName(path, true, pathClassLoader);
        Object ret = c.newInstance();
        return ret;
    } catch (InstantiationException ex1) {
        ex1.printStackTrace();
    } catch (IllegalAccessException ex2) {
        ex2.printStackTrace();
    } catch (ClassNotFoundException ex3) {
        ex3.printStackTrace();
    }

    return null;
}

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From source file:Main.java

private static void loadApplicationResources(Context context, Map<String, String> iconPackResources,
        String packageName) {// w  ww .  ja  v  a 2 s .  co m
    Field[] drawableItems = null;
    try {
        Context appContext = context.createPackageContext(packageName,
                Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY);
        drawableItems = Class.forName(packageName + ".R$drawable", true, appContext.getClassLoader())
                .getFields();
    } catch (Exception e) {
        return;
    }
    for (Field f : drawableItems) {
        String name = f.getName();

        String icon = name.toLowerCase();
        name = name.replaceAll("_", ".");

        iconPackResources.put(name, icon);

        int activityIndex = name.lastIndexOf(".");
        if (activityIndex <= 0 || activityIndex == name.length() - 1) {
            continue;
        }

        String iconPackage = name.substring(0, activityIndex);
        if (TextUtils.isEmpty(iconPackage)) {
            continue;
        }
        iconPackResources.put(iconPackage, icon);

        String iconActivity = name.substring(activityIndex + 1);
        if (TextUtils.isEmpty(iconActivity)) {
            continue;
        }
        iconPackResources.put(iconPackage + "." + iconActivity, icon);
    }
}

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From source file:Main.java

public static DexClassLoader createDexClassLoader(Context context, String dexPath, String optimizedDir,
        String nativeLibDir, boolean isDependent) {
    ClassLoader parentClassLoader;
    if (isDependent) {
        parentClassLoader = ClassLoader.getSystemClassLoader().getParent();
    } else {/*  ww w . j  av  a 2 s  .  com*/
        parentClassLoader = context.getClassLoader();
    }
    return new DexClassLoader(dexPath, optimizedDir, nativeLibDir, parentClassLoader);
}

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From source file:com.google.android.apps.authenticator.testability.HttpClientFactory.java

private static HttpClient createHttpClientForFroyoAndHigher(Context context) throws ClassNotFoundException,
        NoSuchMethodException, IllegalAccessException, InvocationTargetException {
    // IMPLEMENTATION NOTE: We create the instance via Reflection API to avoid raising the
    // target SDK version to 8 because that will cause Eclipse to complain for no good reason.
    // The code below invokes:
    //   AndroidHttpClient.newInstance(null, getContext())
    Class<?> androidHttpClientClass = context.getClassLoader().loadClass("android.net.http.AndroidHttpClient");
    Method newInstanceMethod = androidHttpClientClass.getMethod("newInstance", String.class, Context.class);
    return (HttpClient) newInstanceMethod.invoke(null, null, context);
}

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From source file:im.ene.lab.design.widget.swipecards.TinderView.java

private static Style parseStyle(Context context, AttributeSet attrs, String name) {
    if (TextUtils.isEmpty(name)) {
        return null;
    } else {//  w w  w  .j a v a 2  s  .  c o m
        String fullName;
        if (name.startsWith(".")) {
            fullName = context.getPackageName() + name;
        } else if (name.indexOf(46) >= 0) {
            fullName = name;
        } else {
            fullName = WIDGET_PACKAGE_NAME + '.' + name;
        }

        try {
            Map e = (Map) sConstructors.get();
            if (e == null) {
                e = new HashMap();
                sConstructors.set(e);
            }

            Constructor c = (Constructor) e.get(fullName);
            if (c == null) {
                Class clazz = Class.forName(fullName, true, context.getClassLoader());
                c = clazz.getConstructor(CONSTRUCTOR_PARAMS);
                c.setAccessible(true);
                e.put(fullName, c);
            }

            return (Style) c.newInstance(context, attrs);
        } catch (Exception var7) {
            throw new RuntimeException("Could not inflate Style subclass " + fullName, var7);
        }
    }
}

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From source file:org.zywx.wbpalmstar.engine.EUtil.java

public static DexClassLoader loadDex(Context ctx, String dexAssertPath) {
    int index = dexAssertPath.lastIndexOf('/');
    if (index < 0) {
        return null;
    }/*www .j  ava2  s.c  om*/
    String dexName = dexAssertPath.substring(index);
    String dexPath = ctx.getDir("dex", Context.MODE_PRIVATE).getAbsolutePath() + dexName;
    File f = new File(dexPath);
    if (!f.exists()) {
        boolean ok = copyDex(ctx, dexAssertPath, dexPath);
        if (!ok) {
            return null;
        }
    }
    String dexOutputDir = ctx.getDir("outdex", Context.MODE_PRIVATE).getAbsolutePath();
    DexClassLoader cl = new DexClassLoader(dexPath, dexOutputDir, null, ctx.getClassLoader());
    return cl;
}

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