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android 資源和國際化（續二）

編輯：初級開發

自定義View,eg:API LabelVIEw.Java
在res/values/
               |_arrays.XML
               |_attrs.XML
               |_colors.XML 關於該目錄
(一)，可以被編譯成很多中類型的資源XML文件
(二)，不象其他的/res/folder,他可以保存任意數量的文件，這些文件保存了要創建資源的描述，而不是資源本身，XML元素類型控制這些資源應該放在R類的什麼地方。 arrars.XML 定義數據
colors.XML 定義 color drawable 和顏色的字符串值（color string values）.使用Resource.getDrawable()和Resource.getColor()分別獲得這些資源。
dimens.XML 定義尺寸值（dimension value）,使用Resource.getDimension()獲得這些資源值
strings.XML
styles.XML 定義樣式(style)對象如下API中定一的一些文件
arrars.XML
<?XML version="1.0" encoding="utf-8"?>
 <resources>
    
    <string-array name="colors">
        <item>red</item>
        <item>orange</item>
        <item>yellow</item>
        <item>green</item>
        <item>blue</item>
        <item>violet</item>
    </string-array>
        
    <string-array name="planets">
        <item>Mercury</item>
        <item>Venus</item>
        <item>Earth</item>
        <item>Mars</item>
        <item>Jupiter</item>
        <item>Saturn</item>
        <item>Uranus</item>
        <item>Neptune</item>
        <item>Pluto</item>
    </string-array>     
    <string-array name="search_menuModes">
        <item>Search Key</item>
        <item>Menu Item</item>
        <item>Type-To-Search</item>
        <item>Disabled</item>
    </string-array>     
    <string-array name="select_dialog_items">
        <item>Command one</item>
        <item>Command two</item>
        <item>Command three</item>
        <item>Command four</item>
    </string-array>     <string-array name="select_dialog_items2">
        <item>Map</item>
        <item>Satellite</item>
        <item>Traffic</item>
        <item>Street vIEw</item>
    </string-array>     <string-array name="select_dialog_items3">
        <item>Every Monday</item>
        <item>Every Tuesday</item>
        <item>Every Wednesday</item>
        <item>Every Thursday</item>
        <item>Every Friday</item>
        <item>Every Saturday</item>
        <item>Every Sunday</item>
    </string-array>     
    <string-array name="entrIEs_list_preference">
        <item>Alpha Option 01</item>
        <item>Beta Option 02</item>
        <item>CharlIE Option 03</item>
    </string-array>     
    <string-array name="entryvalues_list_preference">
        <item>alpha</item>
        <item>beta</item>
        <item>charlIE</item>
    </string-array> </resources> attrs.XML
<?XML version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="LabelVIEw">
        <attr name="text" format="string" />
        <attr name="textColor" format="color" />
        <attr name="textSize" format="dimension" />
    </declare-styleable>
    <declare-styleable name="TestVIEw">
        <attr name="text1" format="string" />
        <attr name="textColor1" format="color" />
        <attr name="textSize1" format="dimension" />
    </declare-styleable>
</resources> colors.XML
<?XML version="1.0" encoding="utf-8"?>
 <resources>
    <drawable name="red">#7f00</drawable>
    <drawable name="blue">#770000ff</drawable>
    <drawable name="green">#7700ff00</drawable>
    <drawable name="yellow">#77ffff00</drawable>     <drawable name="screen_background_black">#ff000000</drawable>
    <drawable name="translucent_background">#e0000000</drawable>
    <drawable name="transparent_background">#00000000</drawable>     <color name="solid_red">#f00</color>
    <color name="solid_blue">#0000ff</color>
    <color name="solid_green">#f0f0</color>
    <color name="solid_yellow">#ffffff00</color> </resources>
LableVIEw.Java
// Need the following import to get Access to the app resources, since this
// class is in a sub-package.
import com.spt.test.R; import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.VIEw; /**
* Example of how to write a custom subclass of View. LabelVIEw
* is used to draw simple text vIEws. Note that it does not handle
* styled text or right-to-left writing systems. public class LabelView extends VIEw {
    private Paint mTextPaint;
    private String mText;
    private int mAscent;     /**
     * Constructor. This version is only needed if you will be instantiating
     * the object manually (not from a layout XML file).
     * @param context     public LabelVIEw(Context context) {
        super(context);
        initLabelVIEw();      * Construct object, initializing with any attributes we understand from a
     * layout file. These attributes are defined in
     * SDK/assets/res/any/classes.XML.      * @see android.view.View#VIEw(android.content.Context, android.util.AttributeSet)     public LabelVIEw(Context context, AttributeSet attrs) {
        super(context, attrs);
        initLabelVIEw();
        TypedArray a = context.obtainStyledAttributes(attrs,
                R.styleable.LabelView);         CharSequence s = a.getString(R.styleable.LabelVIEw_text);
        if (s != null) {
            setText(s.toString());
        }         // Retrieve the color(s) to be used for this vIEw and apply them.
        // Note, if you only care about supporting a single color, that you
        // can instead call a.getColor() and pass that to setTextColor().
        setTextColor(a.getColor(R.styleable.LabelView_textColor, 0xFF000000));         int textSize = a.getDimensionPixelOffset(R.styleable.LabelVIEw_textSize, 0);
        if (textSize > 0) {
            setTextSize(textSize);
        }         a.recycle();
    }     private final void initLabelVIEw() {
        mTextPaint = new Paint();
        mTextPaint.setAntiAlias(true);
        mTextPaint.setTextSize(16);
        mTextPaint.setColor(0xFF000000);
        setPadding(3, 3, 3, 3);      * Sets the text to display in this label
     * @param text The text to display. This will be drawn as one line.     public void setText(String text) {
        mText = text;
        requestLayout();
        invalidate();      * Sets the text size for this label
     * @param size Font size     public void setTextSize(int size) {
        mTextPaint.setTextSize(size);
        requestLayout();
        invalidate();      * Sets the text color for this label.
     * @param color ARGB value for the text     public void setTextColor(int color) {
        mTextPaint.setColor(color);
        invalidate();      * @see android.view.VIEw#measure(int, int)     @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        setMeasuredDimension(measureWidth(widthMeasureSpec),
                measureHeight(heightMeasureSpec));      * Determines the width of this vIEw
     * @param measureSpec A measureSpec packed into an int
     * @return The width of the vIEw, honoring constraints from measureSpec     private int measureWidth(int measureSpec) {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);         if (specMode == MeasureSpec.EXACTLY) {
            // We were told how big to be
            result = specSize;
        } else {
            // Measure the text
            result = (int) mTextPaint.measureText(mText) + getPaddingLeft()
                    + getPaddingRight();
            if (specMode == MeasureSpec.AT_MOST) {
                // Respect AT_MOST value if that was what is called for by measureSpec
                result = Math.min(result, specSize);         }         return result;      * Determines the height of this vIEw
     * @param measureSpec A measureSpec packed into an int
     * @return The height of the vIEw, honoring constraints from measureSpec     private int measureHeight(int measureSpec) {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);         mAscent = (int) mTextPaint.ascent();
        if (specMode == MeasureSpec.EXACTLY) {
            // We were told how big to be
            result = specSize;
        } else {
            // Measure the text (beware: ascent is a negative number)
            result = (int) (-mAscent + mTextPaint.descent()) + getPaddingTop()
                    + getPaddingBottom();
            if (specMode == MeasureSpec.AT_MOST) {
                // Respect AT_MOST value if that was what is called for by measureSpec
                result = Math.min(result, specSize);         }
        return result;      * Render the text      * @see android.view.VIEw#onDraw(android.graphics.Canvas)     @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.drawText(mText, getPaddingLeft(), getPaddingTop() - mAscent, mTextPaint); }
custom_vIEw_1.XML
<?XML version="1.0" encoding="utf-8"?>
  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android"
        XMLns:app="http://schemas.android.com/apk/res/custom_vIEw_dir"
        android:orIEntation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">     <custom_vIEw_dir
            android:background="@drawable/red"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            app:text="Red"/>     <custom_vIEw_dir
            android:background="@drawable/blue"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            app:text="Blue" app:textSize="20dp"/>     <custom_vIEw_dir
            android:background="@drawable/green"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            app:text="Green" app:textColor="#ffffffff" /> </LinearLayout>

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