android.util.JsonWriter#endObject ( )源码实例Demo

public static String listToJsonStr(final List<Object> list) {
    if (list == null || list.isEmpty()) {
        return EMPTY_STRING;
    }
    final StringWriter sw = new StringWriter();
    final JsonWriter writer = new JsonWriter(sw);
    try {
        writer.beginArray();
        for (final Object o : list) {
            writer.beginObject();
            if (o instanceof Integer) {
                writer.name(INTEGER_CLASS_NAME).value((Integer)o);
            } else if (o instanceof String) {
                writer.name(STRING_CLASS_NAME).value((String)o);
            }
            writer.endObject();
        }
        writer.endArray();
        return sw.toString();
    } catch (final IOException e) {
    } finally {
        close(writer);
    }
    return EMPTY_STRING;
}
 

private String getDataSettings(Context context)throws IOException{
    String[]names=new String[]{"Settings","ScrapedTags"};
    StringWriter sw=new StringWriter();
    JsonWriter writer=new JsonWriter(sw);
    writer.setIndent("\t");

    writer.beginObject();
    for(String name:names)
        processSharedFromName(writer,context,name);
    writer.endObject();

    writer.flush();
    String settings=sw.toString();
    writer.close();

    LogUtility.d(settings);
    return settings;
}
 

public static String listToJsonStr(final List<Object> list) {
    if (list == null || list.isEmpty()) {
        return EMPTY_STRING;
    }
    final StringWriter sw = new StringWriter();
    final JsonWriter writer = new JsonWriter(sw);
    try {
        writer.beginArray();
        for (final Object o : list) {
            writer.beginObject();
            if (o instanceof Integer) {
                writer.name(INTEGER_CLASS_NAME).value((Integer)o);
            } else if (o instanceof String) {
                writer.name(STRING_CLASS_NAME).value((String)o);
            }
            writer.endObject();
        }
        writer.endArray();
        return sw.toString();
    } catch (final IOException e) {
    } finally {
        close(writer);
    }
    return EMPTY_STRING;
}
 

public void toJSON(JsonWriter writer) throws IOException {
    writer.beginObject();
    writer.name("qname").value(qname);
    writer.name("server").value(server);
    writer.name("qtype").value(qtype);
    writer.name("qclass").value(qclass);
    writer.name("protocol").value(protocol);
    writer.name("flag_rd").value(flag_RD);
    writer.name("flag_cd").value(flag_CD);
    writer.name("flag_do").value(flag_DO);
    writer.name("tcp").value(TCP);
    writer.name("port").value(port);


    writer.name("answer");
    if(answer != null){
        answer.toJSON(writer);
    } else {
        writer.nullValue();
    }

    writer.endObject();
}
 

public void toJSON(JsonWriter writer) throws IOException {
    writer.beginObject();
    writer.name("status").value(status);
    writer.name("rcode").value(rcode);
    writer.name("server").value(server);
    writer.name("qsize").value(qsize);
    writer.name("asize").value(asize);
    writer.name("flag_AA").value(flag_AA);
    writer.name("flag_TC").value(flag_TC);
    writer.name("flag_RD").value(flag_RD);
    writer.name("flag_RA").value(flag_RA);
    writer.name("flag_AD").value(flag_AD);
    writer.name("flag_CD").value(flag_CD);
    writer.name("answerText").value(answerText);
    writer.name("runtimestamp").value(runtimestamp);
    writer.name("duration").value(duration);
    writer.endObject();
}
 

public static String listToJsonStr(final List<Object> list) {
    if (list == null || list.isEmpty()) {
        return EMPTY_STRING;
    }
    final StringWriter sw = new StringWriter();
    final JsonWriter writer = new JsonWriter(sw);
    try {
        writer.beginArray();
        for (final Object o : list) {
            writer.beginObject();
            if (o instanceof Integer) {
                writer.name(INTEGER_CLASS_NAME).value((Integer)o);
            } else if (o instanceof String) {
                writer.name(STRING_CLASS_NAME).value((String)o);
            }
            writer.endObject();
        }
        writer.endArray();
        return sw.toString();
    } catch (final IOException e) {
    } finally {
        close(writer);
    }
    return EMPTY_STRING;
}
 

void writeJson(JsonWriter writer)throws IOException{
    writer.beginObject();
    writer.name("count").value(count);
    writer.name("type").value(getTypeSingleName());
    writer.name("id").value(id);
    writer.name("name").value(name);
    writer.endObject();
}
 

private static String serializeDetails(
        PaymentItem total, @Nullable List<PaymentItem> displayItems) {
    StringWriter stringWriter = new StringWriter();
    JsonWriter json = new JsonWriter(stringWriter);
    try {
        // details {{{
        json.beginObject();

        // total {{{
        json.name("total");
        serializePaymentItem(total, json);
        // }}} total

        // displayitems {{{
        if (displayItems != null) {
            json.name("displayItems").beginArray();
            for (int i = 0; i < displayItems.size(); i++) {
                serializePaymentItem(displayItems.get(i), json);
            }
            json.endArray();
        }
        // }}} displayItems

        json.endObject();
        // }}} details
    } catch (IOException e) {
        return null;
    }

    return stringWriter.toString();
}
 

private static void serializeModifier(PaymentDetailsModifier modifier, JsonWriter json)
        throws IOException {
    // {{{
    json.beginObject();

    // total {{{
    if (modifier.total != null) {
        json.name("total");
        serializePaymentItem(modifier.total, json);
    } else {
        json.name("total").nullValue();
    }
    // }}} total

    // supportedMethods {{{
    json.name("supportedMethods").beginArray();
    for (String method : modifier.methodData.supportedMethods) {
        json.value(method);
    }
    json.endArray();
    // }}} supportedMethods

    // data {{{
    json.name("data").value(modifier.methodData.stringifiedData);
    // }}}

    json.endObject();
    // }}}
}
 

private static void writeTag(JsonWriter jw, Tag tag) throws IOException{
    jw.beginObject();
    jw.name("id").value(tag.getId());
    jw.name("name").value(tag.getName());
    jw.name("type").value(tag.getTypeSingleName());
    jw.endObject();
}
 

private void processSharedFromName(JsonWriter writer, Context context, String name)throws IOException{
    writer.name(name);
    writer.beginObject();
    SharedPreferences preferences=context.getSharedPreferences(name,0);
    for(Map.Entry<String,?> entry: preferences.getAll().entrySet()){
        writeEntry(writer,entry);
    }
    writer.endObject();
}
 

void writePlace(JsonWriter writer, Address address) throws IOException {
    writer.beginObject();
    writer.name("text").value(address.getText());
    writer.name("street_line").value(address.getStreetLine());
    writer.name("city").value(address.getCity());
    writer.name("state").value(address.getState());
    writer.endObject();
}
 

private static void encodeTuple(JsonWriter writer, ShareTuple tuple) throws IOException {
  if (tuple == ShareTuple.EMPTY_TUPLE) {
    writer.nullValue();
  } else {
    writer.beginObject();
    writer.name(WORKGROUP_KEY).value(tuple.mWorkgroup);
    writer.name(USERNAME_KEY).value(tuple.mUsername);
    writer.name(PASSWORD_KEY).value(tuple.mPassword);
    writer.name(MOUNT_KEY).value(tuple.mIsMounted);
    writer.endObject();
  }
}
 

@Test
public void testJsonWriter() throws Exception {
    StringWriter sw = new StringWriter();
    JsonWriter jw = new JsonWriter(sw);
    jw.beginObject();
    jw.name("test");
    jw.value("world");
    jw.endObject();
    jw.flush();

    assertEquals("{\"test\":\"world\"}", sw.toString());

}
 

@Test
public void testJsonWriter() throws Exception {
    StringWriter sw = new StringWriter();
    JsonWriter jw = new JsonWriter(sw);
    jw.beginObject();
    jw.name("test");
    jw.value("world");
    jw.endObject();
    jw.flush();

    assertEquals("{\"test\":\"world\"}", sw.toString());

}
 

void writePlace(JsonWriter writer, Place place) throws IOException {
    writer.beginObject();
    writer.name("description").value(place.description);
    writer.name("place_id").value(place.place_id);
    writer.name("matched_substrings");
    writeMatchedSubstringsArray(writer, place.matched_substrings);
    writer.name("terms");
    writeDescriptionTermsArray(writer, place.terms);
    writer.name("types");
    writePlaceTypesArray(writer, place.types);
    writer.endObject();
}
 

@SuppressWarnings("deprecation")
private void addProperties(JsonWriter j, View v) throws IOException {
    final Class<?> viewClass = v.getClass();
    boolean processable = true;
    for (final PropertyDescription desc : mProperties) {
        if (desc.targetClass.isAssignableFrom(viewClass) && null != desc.accessor) {
            final Object value = desc.accessor.applyMethod(v);

            if (processable) {
                if (!TextUtils.isEmpty(desc.name)) {
                    if ("clickable".equals(desc.name)) {
                        boolean isClickable = (Boolean) value;
                        if (!isClickable || v instanceof AbsListView || v instanceof AbsoluteLayout) {
                            processable = false;
                        }
                    } else if ("alpha".equals(desc.name)) {
                        float alpha = (Float) value;
                        // 透明度是0则不可见
                        if (alpha == 0) {
                            processable = false;
                        }
                    } else if ("hidden".equals(desc.name)) {
                        int hide = (Integer) value;
                        // hidden是0则隐藏
                        if (hide != 0) {
                            processable = false;
                        }
                    }
                }
            }
            j.name("processable").value(processable ? "1" : "0");
            if (null == value) {
                // Don't produce anything in this case
            } else if (value instanceof Number) {
                j.name(desc.name).value((Number) value);
            } else if (value instanceof Boolean) {
                j.name(desc.name).value((Boolean) value);
            } else if (value instanceof ColorStateList) {
                j.name(desc.name).value((Integer) ((ColorStateList) value).getDefaultColor());
            } else if (value instanceof Drawable) {
                final Drawable drawable = (Drawable) value;
                final Rect bounds = drawable.getBounds();
                j.name(desc.name);
                j.beginObject();
                j.name("classes");
                j.beginArray();
                Class<?> klass = drawable.getClass();
                while (klass != Object.class) {
                    j.value(klass.getCanonicalName());
                    klass = klass.getSuperclass();
                }
                j.endArray();
                j.name("dimensions");
                j.beginObject();
                j.name("left").value(bounds.left);
                j.name("right").value(bounds.right);
                j.name("top").value(bounds.top);
                j.name("bottom").value(bounds.bottom);
                j.endObject();
                if (drawable instanceof ColorDrawable) {
                    final ColorDrawable colorDrawable = (ColorDrawable) drawable;
                    j.name("color").value(colorDrawable.getColor());
                }
                j.endObject();
            } else {
                j.name(desc.name).value(value.toString());
            }
        }
    }
}
 

@Override
public void onFullCardDetails(CreditCard card, String cvc) {
    StringWriter stringWriter = new StringWriter();
    JsonWriter json = new JsonWriter(stringWriter);
    try {
        json.beginObject();

        json.name("cardholderName").value(card.getName());
        json.name("cardNumber").value(card.getNumber());
        json.name("expiryMonth").value(card.getMonth());
        json.name("expiryYear").value(card.getYear());
        json.name("cardSecurityCode").value(cvc);

        if (mBillingAddress != null) {
            json.name("billingAddress").beginObject();

            json.name("country").value(ensureNotNull(mBillingAddress.getCountryCode()));
            json.name("region").value(ensureNotNull(mBillingAddress.getRegion()));
            json.name("city").value(ensureNotNull(mBillingAddress.getLocality()));
            json.name("dependentLocality")
                    .value(ensureNotNull(mBillingAddress.getDependentLocality()));

            json.name("addressLine").beginArray();
            String multipleLines = ensureNotNull(mBillingAddress.getStreetAddress());
            if (!TextUtils.isEmpty(multipleLines)) {
                String[] lines = multipleLines.split("\n");
                for (int i = 0; i < lines.length; i++) {
                    json.value(lines[i]);
                }
            }
            json.endArray();

            json.name("postalCode").value(ensureNotNull(mBillingAddress.getPostalCode()));
            json.name("sortingCode").value(ensureNotNull(mBillingAddress.getSortingCode()));
            json.name("languageCode").value(ensureNotNull(mBillingAddress.getLanguageCode()));
            json.name("organization").value(ensureNotNull(mBillingAddress.getCompanyName()));
            json.name("recipient").value(ensureNotNull(mBillingAddress.getFullName()));
            json.name("careOf").value("");
            json.name("phone").value(ensureNotNull(mBillingAddress.getPhoneNumber()));

            json.endObject();
        }

        json.endObject();
    } catch (IOException e) {
        mCallback.onInstrumentDetailsError();
        return;
    }

    mCallback.onInstrumentDetailsReady(card.getBasicCardPaymentType(), stringWriter.toString());
}
 

private static void writeViewProperties(JsonWriter j, View v, ViewSnapshotConfig snapshotConfig) throws IOException {
    final Class<?> viewClass = v.getClass();
    for (final ViewProperty desc : snapshotConfig.propertyDescriptionList) {
        if (desc.target.isAssignableFrom(viewClass) && null != desc.accessor) {
            final Object value = desc.accessor.invokeMethod(v);
            //noinspection StatementWithEmptyBody
            if (null == value) {
                // no-op
            }  else if (value instanceof Boolean) {
                j.name(desc.name).value((Boolean) value);
            } else if (value instanceof Number) {
                j.name(desc.name).value((Number) value);
            } else if (value instanceof ColorStateList) {
                j.name(desc.name).value((Integer) ((ColorStateList) value).getDefaultColor());
            } else if (value instanceof Drawable) {
                final Drawable drawable = (Drawable) value;
                final Rect bounds = drawable.getBounds();
                j.name(desc.name);
                j.beginObject();
                j.name("classes");
                j.beginArray();
                Class klass = drawable.getClass();
                while (klass != Object.class) {
                    if (klass != null) {
                        j.value(klass.getCanonicalName());
                        klass = klass.getSuperclass();
                    }
                }
                j.endArray();
                j.name("dimensions");
                j.beginObject();
                j.name("left").value(bounds.left);
                j.name("right").value(bounds.right);
                j.name("top").value(bounds.top);
                j.name("bottom").value(bounds.bottom);
                j.endObject();
                if (drawable instanceof ColorDrawable) {
                    final ColorDrawable colorDrawable = (ColorDrawable) drawable;
                    j.name("color").value(colorDrawable.getColor());
                }
                j.endObject();
            } else {
                j.name(desc.name).value(value.toString());
            }
        }
    }
}
 

private void addProperties(JsonWriter j, View v)
        throws IOException {
    final Class<?> viewClass = v.getClass();
    for (final PropertyDescription desc : mProperties) {
        if (desc.targetClass.isAssignableFrom(viewClass) && null != desc.accessor) {
            final Object value = desc.accessor.applyMethod(v);
            if (null == value) {
                // Don't produce anything in this case
            } else if (value instanceof Number) {
                j.name(desc.name).value((Number) value);
            } else if (value instanceof Boolean) {
                boolean clickable = (boolean) value;
                if (TextUtils.equals("clickable", desc.name)) {
                    if (VisualUtil.isSupportClick(v)) {
                        clickable = true;
                    } else if (VisualUtil.isForbiddenClick(v)) {
                        clickable = false;
                    }
                }
                j.name(desc.name).value(clickable);
            } else if (value instanceof ColorStateList) {
                j.name(desc.name).value((Integer) ((ColorStateList) value).getDefaultColor());
            } else if (value instanceof Drawable) {
                final Drawable drawable = (Drawable) value;
                final Rect bounds = drawable.getBounds();
                j.name(desc.name);
                j.beginObject();
                j.name("classes");
                j.beginArray();
                Class klass = drawable.getClass();
                while (klass != Object.class) {
                    j.value(klass.getCanonicalName());
                    klass = klass.getSuperclass();
                }
                j.endArray();
                j.name("dimensions");
                j.beginObject();
                j.name("left").value(bounds.left);
                j.name("right").value(bounds.right);
                j.name("top").value(bounds.top);
                j.name("bottom").value(bounds.bottom);
                j.endObject();
                if (drawable instanceof ColorDrawable) {
                    final ColorDrawable colorDrawable = (ColorDrawable) drawable;
                    j.name("color").value(colorDrawable.getColor());
                }
                j.endObject();
            } else {
                j.name(desc.name).value(value.toString());
            }
        }
    }
}