TextView显示表情图像和文字
2014-03-17 21:01 kingshow 阅读(2780) 评论(0) 编辑 收藏 举报
通过TextView显示出表情图像和文字。
一、建立工程,在drawable下放入五张表情图片
二、activity_main.xml代码
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="10dp" android:id="@+id/textview" android:background="#fff" /> </RelativeLayout>
三、MainActivity.java代码
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package com.study.android_textview2; import java.lang.reflect.Field; import android.R.drawable; import android.os.Bundle; import android.app.Activity; import android.graphics.Color; import android.graphics.drawable.Drawable; import android.text.Html; import android.text.Html.ImageGetter; import android.text.method.LinkMovementMethod; import android.view.Menu; import android.widget.TextView; public class MainActivity extends Activity { public int getResourceId(String name){ try { //根据资源的ID的变量名获得Field的对象,使用反射机制实现的 Field field = R.drawable.class.getField(name); //取得并返回资源的id的字段(静态变量)的值,使用反射机制 return Integer.parseInt(field.get(null).toString()); } catch (Exception e) { e.printStackTrace(); } return 0; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView textView = (TextView)this.findViewById(R.id.textview); textView.setTextColor(Color.BLACK); textView.setBackgroundColor(Color.WHITE); textView.setTextSize(20); String html = "图像1<img src='image1'/>图像2<img src='image2'/>图像3<img src='image3'/><p>"; html += "图像4<a href='http://www.baidu.com'><img src='image4'/></a>图像5<img src='image5'/>"; CharSequence charSequence = Html.fromHtml(html, new ImageGetter() { @Override public Drawable getDrawable(String source) { //获得系统资源的信息,比如图片信息 Drawable drawable = getResources().getDrawable(getResourceId(source)); //处理第三个图片文件按照50%的比例进行压缩 if (source.equals("image3")) { drawable.setBounds(0, 0, drawable.getIntrinsicWidth()/2, drawable.getIntrinsicHeight()/2); }else { drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); } return drawable; } }, null); textView.setText(charSequence); textView.setMovementMethod(LinkMovementMethod.getInstance()); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
四、效果图