ContentValues怎么用的？

一般使用ContentValues

ContentValues contentValues = new ContentValues();
contentValues.put(key, value);
context.getContentResolver().insert(url, contentValues);//其中url是Uri类型的

挺好奇的，就看了一下ContentValues源码，本来想着应该是个键值对神马的，hashmap之类的，结果。。

源码中的ContentValues看着挺奇怪的

package android.content;
public final class ContentValues
  implements android.os.Parcelable
{
public  ContentValues() { throw new RuntimeException("Stub!"); }
public  ContentValues(int size) { throw new RuntimeException("Stub!"); }
public  ContentValues(android.content.ContentValues from) { throw new RuntimeException("Stub!"); }
public  boolean equals(java.lang.Object object) { throw new RuntimeException("Stub!"); }
public  int hashCode() { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.String value) { throw new RuntimeException("Stub!"); }
public  void putAll(android.content.ContentValues other) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.Byte value) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.Short value) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.Integer value) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.Long value) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.Float value) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.Double value) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, java.lang.Boolean value) { throw new RuntimeException("Stub!"); }
public  void put(java.lang.String key, byte[] value) { throw new RuntimeException("Stub!"); }
public  void putNull(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  int size() { throw new RuntimeException("Stub!"); }
public  void remove(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  void clear() { throw new RuntimeException("Stub!"); }
public  boolean containsKey(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Object get(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.String getAsString(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Long getAsLong(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Integer getAsInteger(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Short getAsShort(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Byte getAsByte(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Double getAsDouble(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Float getAsFloat(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.lang.Boolean getAsBoolean(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  byte[] getAsByteArray(java.lang.String key) { throw new RuntimeException("Stub!"); }
public  java.util.Set> valueSet() { throw new RuntimeException("Stub!"); }
public  java.util.Set keySet() { throw new RuntimeException("Stub!"); }
public  int describeContents() { throw new RuntimeException("Stub!"); }
@java.lang.SuppressWarnings(value={"deprecation"})
public  void writeToParcel(android.os.Parcel parcel, int flags) { throw new RuntimeException("Stub!"); }
public  java.lang.String toString() { throw new RuntimeException("Stub!"); }
public static final java.lang.String TAG = "ContentValues";
public static final android.os.Parcelable.Creator CREATOR;
static { CREATOR = null; }
}