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>  




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