IT. Expert System.

Android Reference

TypedArray


android.content.res

Class TypedArray

    • Method Summary

      Methods
      Modifier and Type Method and Description
      boolean getBoolean(int index, boolean defValue)
      Retrieve the boolean value for the attribute at index.
      int getColor(int index, int defValue)
      Retrieve the color value for the attribute at index.
      ColorStateList getColorStateList(int index)
      Retrieve the ColorStateList for the attribute at index.
      float getDimension(int index, float defValue)
      Retrieve a dimensional unit attribute at index.
      int getDimensionPixelOffset(int index, int defValue)
      Retrieve a dimensional unit attribute at index for use as an offset in raw pixels.
      int getDimensionPixelSize(int index, int defValue)
      Retrieve a dimensional unit attribute at index for use as a size in raw pixels.
      Drawable getDrawable(int index)
      Retrieve the Drawable for the attribute at index.
      float getFloat(int index, float defValue)
      Retrieve the float value for the attribute at index.
      float getFraction(int index, int base, int pbase, float defValue)
      Retrieve a fractional unit attribute at index.
      int getIndex(int at)
      Return an index in the array that has data.
      int getIndexCount()
      Return the number of indices in the array that actually have data.
      int getInt(int index, int defValue)
      Retrieve the integer value for the attribute at index.
      int getInteger(int index, int defValue)
      Retrieve the integer value for the attribute at index.
      int getLayoutDimension(int index, int defValue)
      Special version of getDimensionPixelSize(int, int) for retrieving ViewGroup's layout_width and layout_height attributes.
      int getLayoutDimension(int index, String name)
      Special version of getDimensionPixelSize(int, int) for retrieving ViewGroup's layout_width and layout_height attributes.
      String getNonConfigurationString(int index, int allowedChangingConfigs)
      String getNonResourceString(int index)
      Retrieve the string value for the attribute at index, but only if that string comes from an immediate value in an XML file.
      String getPositionDescription()
      Returns a message about the parser state suitable for printing error messages.
      int getResourceId(int index, int defValue)
      Retrieve the resource identifier for the attribute at index.
      Resources getResources()
      Return the Resources object this array was loaded from.
      String getString(int index)
      Retrieve the string value for the attribute at index.
      CharSequence getText(int index)
      Retrieve the styled string value for the attribute at index.
      CharSequence[] getTextArray(int index)
      Retrieve the CharSequence[] for the attribute at index.
      boolean getValue(int index, TypedValue outValue)
      Retrieve the raw TypedValue for the attribute at index.
      boolean hasValue(int index)
      Determines whether there is an attribute at index.
      int length()
      Return the number of values in this array.
      TypedValue peekValue(int index)
      Retrieve the raw TypedValue for the attribute at index and return a temporary object holding its data.
      void recycle()
      Give back a previously retrieved array, for later re-use.
      String toString()
      Returns a string containing a concise, human-readable description of this object.
    • Method Detail

      • length

        public int length()
        Return the number of values in this array.
      • getIndexCount

        public int getIndexCount()
        Return the number of indices in the array that actually have data.
      • getIndex

        public int getIndex(int at)
        Return an index in the array that has data.
        Parameters:
        at - The index you would like to returned, ranging from 0 to getIndexCount().
        Returns:
        The index at the given offset, which can be used with getValue(int, android.util.TypedValue) and related APIs.
      • getResources

        public Resources getResources()
        Return the Resources object this array was loaded from.
      • getText

        public CharSequence getText(int index)
        Retrieve the styled string value for the attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        CharSequence holding string data. May be styled. Returns null if the attribute is not defined.
      • getString

        public String getString(int index)
        Retrieve the string value for the attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        String holding string data. Any styling information is removed. Returns null if the attribute is not defined.
      • getNonResourceString

        public String getNonResourceString(int index)
        Retrieve the string value for the attribute at index, but only if that string comes from an immediate value in an XML file. That is, this does not allow references to string resources, string attributes, or conversions from other types. As such, this method will only return strings for TypedArray objects that come from attributes in an XML file.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        String holding string data. Any styling information is removed. Returns null if the attribute is not defined or is not an immediate string value.
      • getNonConfigurationString

        public String getNonConfigurationString(int index,
                                       int allowedChangingConfigs)
        Parameters:
        index - Index of attribute to retrieve.
        allowedChangingConfigs - Bit mask of configurations from ActivityInfo that are allowed to change.
        Returns:
        String holding string data. Any styling information is removed. Returns null if the attribute is not defined.
      • getBoolean

        public boolean getBoolean(int index,
                         boolean defValue)
        Retrieve the boolean value for the attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined.
        Returns:
        Attribute boolean value, or defValue if not defined.
      • getInt

        public int getInt(int index,
                 int defValue)
        Retrieve the integer value for the attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined.
        Returns:
        Attribute int value, or defValue if not defined.
      • getFloat

        public float getFloat(int index,
                     float defValue)
        Retrieve the float value for the attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        Attribute float value, or defValue if not defined..
      • getColor

        public int getColor(int index,
                   int defValue)
        Retrieve the color value for the attribute at index. If the attribute references a color resource holding a complex ColorStateList, then the default color from the set is returned.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined or not a resource.
        Returns:
        Attribute color value, or defValue if not defined.
      • getColorStateList

        public ColorStateList getColorStateList(int index)
        Retrieve the ColorStateList for the attribute at index. The value may be either a single solid color or a reference to a color or complex ColorStateList description.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        ColorStateList for the attribute, or null if not defined.
      • getInteger

        public int getInteger(int index,
                     int defValue)
        Retrieve the integer value for the attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined or not a resource.
        Returns:
        Attribute integer value, or defValue if not defined.
      • getDimension

        public float getDimension(int index,
                         float defValue)
        Retrieve a dimensional unit attribute at index. Unit conversions are based on the current DisplayMetrics associated with the resources this TypedArray object came from.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined or not a resource.
        Returns:
        Attribute dimension value multiplied by the appropriate metric, or defValue if not defined.
        See Also:
        getDimensionPixelOffset(int, int), getDimensionPixelSize(int, int)
      • getDimensionPixelOffset

        public int getDimensionPixelOffset(int index,
                                  int defValue)
        Retrieve a dimensional unit attribute at index for use as an offset in raw pixels. This is the same as getDimension(int, float), except the returned value is converted to integer pixels for you. An offset conversion involves simply truncating the base value to an integer.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined or not a resource.
        Returns:
        Attribute dimension value multiplied by the appropriate metric and truncated to integer pixels, or defValue if not defined.
        See Also:
        getDimension(int, float), getDimensionPixelSize(int, int)
      • getDimensionPixelSize

        public int getDimensionPixelSize(int index,
                                int defValue)
        Retrieve a dimensional unit attribute at index for use as a size in raw pixels. This is the same as getDimension(int, float), except the returned value is converted to integer pixels for use as a size. A size conversion involves rounding the base value, and ensuring that a non-zero base value is at least one pixel in size.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined or not a resource.
        Returns:
        Attribute dimension value multiplied by the appropriate metric and truncated to integer pixels, or defValue if not defined.
        See Also:
        getDimension(int, float), getDimensionPixelOffset(int, int)
      • getLayoutDimension

        public int getLayoutDimension(int index,
                             String name)
        Special version of getDimensionPixelSize(int, int) for retrieving ViewGroup's layout_width and layout_height attributes. This is only here for performance reasons; applications should use getDimensionPixelSize(int, int).
        Parameters:
        index - Index of the attribute to retrieve.
        name - Textual name of attribute for error reporting.
        Returns:
        Attribute dimension value multiplied by the appropriate metric and truncated to integer pixels.
      • getLayoutDimension

        public int getLayoutDimension(int index,
                             int defValue)
        Special version of getDimensionPixelSize(int, int) for retrieving ViewGroup's layout_width and layout_height attributes. This is only here for performance reasons; applications should use getDimensionPixelSize(int, int).
        Parameters:
        index - Index of the attribute to retrieve.
        defValue - The default value to return if this attribute is not default or contains the wrong type of data.
        Returns:
        Attribute dimension value multiplied by the appropriate metric and truncated to integer pixels.
      • getFraction

        public float getFraction(int index,
                        int base,
                        int pbase,
                        float defValue)
        Retrieve a fractional unit attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        base - The base value of this fraction. In other words, a standard fraction is multiplied by this value.
        pbase - The parent base value of this fraction. In other words, a parent fraction (nn%p) is multiplied by this value.
        defValue - Value to return if the attribute is not defined or not a resource.
        Returns:
        Attribute fractional value multiplied by the appropriate base value, or defValue if not defined.
      • getResourceId

        public int getResourceId(int index,
                        int defValue)
        Retrieve the resource identifier for the attribute at index. Note that attribute resource as resolved when the overall TypedArray object is retrieved. As a result, this function will return the resource identifier of the final resource value that was found, not necessarily the original resource that was specified by the attribute.
        Parameters:
        index - Index of attribute to retrieve.
        defValue - Value to return if the attribute is not defined or not a resource.
        Returns:
        Attribute resource identifier, or defValue if not defined.
      • getDrawable

        public Drawable getDrawable(int index)
        Retrieve the Drawable for the attribute at index. This gets the resource ID of the selected attribute, and uses Resources.getDrawable of the owning Resources object to retrieve its Drawable.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        Drawable for the attribute, or null if not defined.
      • getTextArray

        public CharSequence[] getTextArray(int index)
        Retrieve the CharSequence[] for the attribute at index. This gets the resource ID of the selected attribute, and uses Resources.getTextArray of the owning Resources object to retrieve its String[].
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        CharSequence[] for the attribute, or null if not defined.
      • getValue

        public boolean getValue(int index,
                       TypedValue outValue)
        Retrieve the raw TypedValue for the attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        outValue - TypedValue object in which to place the attribute's data.
        Returns:
        Returns true if the value was retrieved, else false.
      • hasValue

        public boolean hasValue(int index)
        Determines whether there is an attribute at index.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        True if the attribute has a value, false otherwise.
      • peekValue

        public TypedValue peekValue(int index)
        Retrieve the raw TypedValue for the attribute at index and return a temporary object holding its data. This object is only valid until the next call on to TypedArray.
        Parameters:
        index - Index of attribute to retrieve.
        Returns:
        Returns a TypedValue object if the attribute is defined, containing its data; otherwise returns null. (You will not receive a TypedValue whose type is TYPE_NULL.)
      • getPositionDescription

        public String getPositionDescription()
        Returns a message about the parser state suitable for printing error messages.
      • recycle

        public void recycle()
        Give back a previously retrieved array, for later re-use.
      • toString

        public String toString()
        Description copied from class: Object
        Returns a string containing a concise, human-readable description of this object. Subclasses are encouraged to override this method and provide an implementation that takes into account the object's type and data. The default implementation is equivalent to the following expression:
           getClass().getName() + '@' + Integer.toHexString(hashCode())

        See Writing a useful toString method if you intend implementing your own toString method.

        Overrides:
        toString in class Object
        Returns:
        a printable representation of this object.


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