[转]Android中设置TextView的颜色setTextColor

[转自]http://txlong-onz.iteye.com/blog/1249609

Android中设置TextView的颜色setTextColor

android中设置TextView的颜色有方法setTextColor，这个方法被重载了，可以传入两种参数。

 public void setTextColor(int color) {

     mTextColor = ColorStateList.valueOf(color);

     updateTextColors();

 }

 public void setTextColor(ColorStateList colors) {

     if (colors == null) {

         throw new NullPointerException();

     }

     mTextColor = colors;

     updateTextColors();

 }

下边就分别写出怎么使用这两个方法设置TextView的颜色：

 TextView tv = new TextView(this);

 tv.setText("Test set TextView's color.");

 //方案一：代码中通过argb值的方式

 tv.setTextColor(Color.rgb(255, 255, 255));

这种方法也就是传入int color值，这个int不是R文件中自动分配的int值，所以要注意。这是Color类中的静态方法构造出来的颜色int值。

 Resources resource = (Resources) getBaseContext().getResources();

 ColorStateList csl = (ColorStateList) resource.getColorStateList(R.color.my_color);

 if (csl != null) {

     tv.setTextColor(csl);

 }

这种方法是通过ColorStateList得到xml中的配置的颜色的。好多需要xml中配置的都要类似这样的映射xml文件。

还有种方法：

 XmlResourceParser xrp = getResources().getXml(R.color.my_color);

 try {

     ColorStateList csl = ColorStateList.createFromXml(getResources(), xrp);

     tv.setTextColor(csl);

 } catch (Exception e) {

 }

全部代码：

 package com.txlong;

 import android.app.Activity;

 import android.graphics.Color;

 import android.os.Bundle;

 import android.widget.TextView;

 public class ListViewDemoActivity extends Activity {

     // private ListView listView;

     /** Called when the activity is first created. */

     @Override

     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         TextView tv = new TextView(this);

         tv.setText("Test set TextView's color.");

         //方案一：通过ARGB值的方式

         /**

          * set the TextView color as the 0~255's ARGB，These component values

          * should be [0..255], but there is no range check performed, so if they

          * are out of range, the returned color is undefined

          */

 //        tv.setTextColor(Color.rgb(255, 255, 255));

         /**

          * set the TextView color as the #RRGGBB #AARRGGBB 'red', 'blue',

          * 'green', 'black', 'white', 'gray', 'cyan', 'magenta', 'yellow',

          * 'lightgray', 'darkgray'

          */

         tv.setTextColor(Color.parseColor("#FFFFFF"));

         /** 原来不知道有上边的方法，就用这个笨笨方法了 */

 //        String StrColor = null;

 //        StrColor = "FFFFFFFF";

 //        int length = StrColor.length();

 //        if (length == 6) {

 //            tv.setTextColor(Color.rgb(

 //                    Integer.valueOf(StrColor.substring(0, 2), 16),

 //                    Integer.valueOf(StrColor.substring(2, 4), 16),

 //                    Integer.valueOf(StrColor.substring(4, 6), 16)));

 //        } else if (length == 8) {

 //            tv.setTextColor(Color.argb(

 //                    Integer.valueOf(StrColor.substring(0, 2), 16),

 //                    Integer.valueOf(StrColor.substring(2, 4), 16),

 //                    Integer.valueOf(StrColor.substring(4, 6), 16),

 //                    Integer.valueOf(StrColor.substring(6, 8), 16)));

 //        }

         //方案二：通过资源引用

 //        tv.setTextColor(getResources().getColor(R.color.my_color));

         //方案三：通过资源文件写在String.xml中

 //        Resources resource = (Resources) getBaseContext().getResources();

 //        ColorStateList csl = (ColorStateList) resource.getColorStateList(R.color.my_color);

 //        if (csl != null) {

 //            tv.setTextColor(csl);

 //        }

         //方案四：通过xml文件，如/res/text_color.xml

 //        XmlPullParser xrp = getResources().getXml(R.color.text_color);

 //        try {

 //            ColorStateList csl = ColorStateList.createFromXml(getResources(), xrp);

 //            tv.setTextColor(csl);

 //        } catch (Exception e) {

 //        }

         // listView = new ListView(this);

         //

         // Cursor cursor = getContentResolver().query(

         // Uri.parse("content://contacts/people"), null, null, null, null);

         //

         // startManagingCursor(cursor);

         //

         // ListAdapter listAdapter = new SimpleCursorAdapter(this,

         // android.R.layout.simple_expandable_list_item_2, cursor,

         // new String[] { "name", "name" }, new int[] {

         // android.R.id.text1, android.R.id.text2 });

         //

         // listView.setAdapter(listAdapter);

         // setContentView(listView);

         setContentView(tv);

     }

 }

String.xml文件为：

 <?xml version="1.0" encoding="utf-8"?>

 <resources>

     <string name="hello">Hello World, ListViewDemoActivity!</string>

     <string name="app_name">ListViewDemo</string>

     <color name="my_color">#FFFFFF</color>

 </resources>

/res/color/text_color.xml

 <?xml version="1.0" encoding="utf-8"?>

 <selector xmlns:android="http://schemas.android.com/apk/res/android">

     <item android:state_pressed="true" android:color="#FF111111"/>

     <!-- pressed -->

     <item android:state_focused="true" android:color="#FF222222"/>

     <!-- focused -->

     <item android:state_selected="true" android:color="#FF333333"/>

     <!-- selected -->

     <item android:state_active="true" android:color="#FF444444"/>

     <!-- active -->

     <item android:state_checkable="true" android:color="#FF555555"/>

     <!-- checkable -->

     <item android:state_checked="true" android:color="#FF666666"/>

     <!-- checked -->

     <item android:state_enabled="true" android:color="#FF777777"/>

     <!-- enabled -->

     <item android:state_window_focused="true" android:color="#FF888888"/>

     <!-- window_focused -->

 </selector>