下面列出了怎么用com.facebook.react.bridge.NoSuchKeyException的API类实例代码及写法，或者点击链接到github查看源代码。
private void assertNoSuchKeyExceptionThrown(
ReadableMap map,
String key,
String typeToAskFor) {
boolean gotException = false;
try {
mapGetByType(map, key, typeToAskFor);
} catch (NoSuchKeyException expected) {
gotException = true;
}
assertTrue(gotException);
}
/**
* Returns the value at {@code key} if it exists, coercing it if
* necessary.
*/
static String getString(ReadableMap map, String key, String defaultValue) {
if (map == null){
return defaultValue;
}
try {
ReadableType type = map.getType(key);
switch (type) {
case Number:
double value = map.getDouble(key);
if (value == (long) value) {
return String.valueOf((long) value);
} else {
return String.valueOf(value);
}
case Boolean:
return String.valueOf(map.getBoolean(key));
case String:
return map.getString(key);
case Null:
return null;
default:
return defaultValue;
}
} catch(NoSuchKeyException ex){
return defaultValue;
}
}
/**
* Returns the value at {@code index} if it exists, coercing it if
* necessary.
*/
static String getString(ReadableArray array, int index, String defaultValue) {
if (array == null){
return defaultValue;
}
try {
ReadableType type = array.getType(index);
switch (type) {
case Number:
double value = array.getDouble(index);
if (value == (long) value) {
return String.valueOf((long) value);
} else {
return String.valueOf(value);
}
case Boolean:
return String.valueOf(array.getBoolean(index));
case String:
return array.getString(index);
case Null:
return null;
default:
return defaultValue;
}
} catch(NoSuchKeyException ex){
return defaultValue;
}
}
static Object get(ReadableMap map,String key,Object defaultValue){
if (map == null){
return defaultValue;
}
try {
Object value = null;
ReadableType type = map.getType(key);
switch(type){
case Boolean:
value = map.getBoolean(key);
break;
case Number:
value = map.getDouble(key);
break;
case String:
value = map.getString(key);
break;
case Map:
value = map.getMap(key);
break;
case Array:
value = map.getArray(key);
break;
case Null:
value = null;
break;
}
return value;
} catch (NoSuchKeyException ex){
return defaultValue;
}
}
static Object get(ReadableArray array,int index,Object defaultValue){
if (array == null){
return defaultValue;
}
try {
Object value = null;
ReadableType type = array.getType(index);
switch(type){
case Boolean:
value = array.getBoolean(index);
break;
case Number:
value = array.getDouble(index);
break;
case String:
value = array.getString(index);
break;
case Map:
value = array.getMap(index);
break;
case Array:
value = array.getArray(index);
break;
case Null:
break;
}
return value;
} catch (NoSuchKeyException ex){
return defaultValue;
}
}
/**
* Returns the value at {@code key} if it exists, coercing it if
* necessary.
*/
static String getString(ReadableMap map, String key, String defaultValue) {
if (map == null){
return defaultValue;
}
try {
ReadableType type = map.getType(key);
switch (type) {
case Number:
double value = map.getDouble(key);
if (value == (long) value) {
return String.valueOf((long) value);
} else {
return String.valueOf(value);
}
case Boolean:
return String.valueOf(map.getBoolean(key));
case String:
return map.getString(key);
case Null:
return null;
default:
return defaultValue;
}
} catch(NoSuchKeyException ex){
return defaultValue;
}
}
/**
* Returns the value at {@code index} if it exists, coercing it if
* necessary.
*/
static String getString(ReadableArray array, int index, String defaultValue) {
if (array == null){
return defaultValue;
}
try {
ReadableType type = array.getType(index);
switch (type) {
case Number:
double value = array.getDouble(index);
if (value == (long) value) {
return String.valueOf((long) value);
} else {
return String.valueOf(value);
}
case Boolean:
return String.valueOf(array.getBoolean(index));
case String:
return array.getString(index);
case Null:
return null;
default:
return defaultValue;
}
} catch(NoSuchKeyException ex){
return defaultValue;
}
}
static Object get(ReadableMap map,String key,Object defaultValue){
if (map == null){
return defaultValue;
}
try {
Object value = null;
ReadableType type = map.getType(key);
switch(type){
case Boolean:
value = map.getBoolean(key);
break;
case Number:
value = map.getDouble(key);
break;
case String:
value = map.getString(key);
break;
case Map:
value = map.getMap(key);
break;
case Array:
value = map.getArray(key);
break;
case Null:
value = null;
break;
}
return value;
} catch (NoSuchKeyException ex){
return defaultValue;
}
}
static Object get(ReadableArray array,int index,Object defaultValue){
if (array == null){
return defaultValue;
}
try {
Object value = null;
ReadableType type = array.getType(index);
switch(type){
case Boolean:
value = array.getBoolean(index);
break;
case Number:
value = array.getDouble(index);
break;
case String:
value = array.getString(index);
break;
case Map:
value = array.getMap(index);
break;
case Array:
value = array.getArray(index);
break;
case Null:
break;
}
return value;
} catch (NoSuchKeyException ex){
return defaultValue;
}
}
public static String tryGetString(ReadableMap map, String key) {
try {
return map.getString(key);
} catch (NoSuchKeyException e) {
return null;
}
}