原文网址:http://www.cnblogs.com/myphoebe/archive/2012/01/06/2314728.html
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>
- ListViewDemo.zip (14.5 KB)
- 下载次数: 14