SpannableString使用详解

怼烎@ 2022-08-27 07:49 139阅读 0赞

转载：     http://blog.csdn.net/ah200614435/article/details/7914459

package com.maizi.activity;
    
    import com.maizi.demo.R;
    
    import android.app.Activity;
    import android.graphics.Color;
    import android.graphics.Typeface;
    import android.graphics.drawable.Drawable;
    import android.os.Bundle;
    import android.text.Spannable;
    import android.text.SpannableString;
    import android.text.style.AbsoluteSizeSpan;
    import android.text.style.BackgroundColorSpan;
    import android.text.style.ForegroundColorSpan;
    import android.text.style.ImageSpan;
    import android.text.style.StrikethroughSpan;
    import android.text.style.StyleSpan;
    import android.text.style.URLSpan;
    import android.text.style.UnderlineSpan;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.EditText;
    
    public class SpannableStringActivity extends Activity implements OnClickListener {
    
    	private EditText tv;
    	private Button underline_btn;
    	private Button strike_btn;
    	private Button style_btn;
    	private Button font_btn;
    	private Button color_btn1;
    	private Button color_btn2;
    	private Button url_btn;
    	private Button image_btn;
    
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.main);
    		tv = (EditText) this.findViewById(R.id.tv);
    		underline_btn = (Button) this.findViewById(R.id.underline_btn);
    		strike_btn = (Button) this.findViewById(R.id.strike_btn);
    		style_btn = (Button) this.findViewById(R.id.style_btn);
    		font_btn = (Button) this.findViewById(R.id.font_btn);
    		color_btn1 = (Button) this.findViewById(R.id.color_btn1);
    		color_btn2 = (Button) this.findViewById(R.id.color_btn2);
    		url_btn = (Button) this.findViewById(R.id.url_btn);
    		image_btn = (Button) this.findViewById(R.id.image_btn);
    
    		underline_btn.setOnClickListener(this);
    		strike_btn.setOnClickListener(this);
    		style_btn.setOnClickListener(this);
    		font_btn.setOnClickListener(this);
    		color_btn1.setOnClickListener(this);
    		color_btn2.setOnClickListener(this);
    		url_btn.setOnClickListener(this);
    		image_btn.setOnClickListener(this);
    	}
    
    	@Override
    	public void onClick(View v) {
    		switch (v.getId()) {
    		case R.id.underline_btn:
    			addUnderLineSpan();
    			break;
    		case R.id.strike_btn:
    			addStrikeSpan();
    			break;
    		case R.id.style_btn:
    			addStyleSpan();
    			break;
    		case R.id.font_btn:
    			addFontSpan();
    			break;
    		case R.id.color_btn1:
    			addForeColorSpan();
    			break;
    		case R.id.color_btn2:
    			addBackColorSpan();
    			break;
    		case R.id.url_btn:
    			addUrlSpan();
    			break;
    		case R.id.image_btn:
    			addImageSpan();
    			break;
    		}
    	}
    
    	/**
    	 * 超链接
    	 */
    	private void addUrlSpan() {
    		SpannableString spanString = new SpannableString("超链接");
    		URLSpan span = new URLSpan("tel:0123456789");
    		spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    
    	/**
    	 * 文字背景颜色
    	 */
    	private void addBackColorSpan() {
    		SpannableString spanString = new SpannableString("颜色2");
    		BackgroundColorSpan span = new BackgroundColorSpan(Color.YELLOW);
    		spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    
    	/**
    	 * 文字颜色
    	 */
    	private void addForeColorSpan() {
    		SpannableString spanString = new SpannableString("颜色1");
    		ForegroundColorSpan span = new ForegroundColorSpan(Color.BLUE);
    		spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    
    	/**
    	 * 字体大小
    	 */
    	private void addFontSpan() {
    		SpannableString spanString = new SpannableString("36号字体");
    		AbsoluteSizeSpan span = new AbsoluteSizeSpan(36);
    		spanString.setSpan(span, 0, 5, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    
    	/**
    	 * 粗体，斜体
    	 */
    	private void addStyleSpan() {
    		SpannableString spanString = new SpannableString("BIBI");
    		StyleSpan span = new StyleSpan(Typeface.BOLD_ITALIC);
    		spanString.setSpan(span, 0, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    
    	/**
    	 * 删除线
    	 */
    	private void addStrikeSpan() {
    		SpannableString spanString = new SpannableString("删除线");
    		StrikethroughSpan span = new StrikethroughSpan();
    		spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    
    	/**
    	 * 下划线
    	 */
    	private void addUnderLineSpan() {
    		SpannableString spanString = new SpannableString("下划线");
    		UnderlineSpan span = new UnderlineSpan();
    		spanString.setSpan(span, 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    
    	/**
    	 * 图片
    	 */
    	private void addImageSpan() {
    		SpannableString spanString = new SpannableString(" ");
    		Drawable d = getResources().getDrawable(R.drawable.ic_launcher);
    		d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
    		ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);
    		spanString.setSpan(span, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    		tv.append(spanString);
    	}
    }