用TextView显示带图片的效果

为了实现在TextView中显示图片，有时对图片的宽度与高度有限制的话，可以对实现进行放大与缩小操作！ 



main.xml 

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     >
 <TextView
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="@string/hello"
     />
 <TextView android:text="TextView01" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
 <TextView android:text="TextView02" android:id="@+id/TextView02" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
 </LinearLayout>

GridView.java 

 package a.gridview;

 import android.app.Activity;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Matrix;
 import android.graphics.PixelFormat;
 import android.graphics.Rect;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.widget.TextView;

 public class GridView extends Activity {

         private TextView text;
         private TextView text1;
     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         text = (TextView) findViewById(R.id.TextView01);
         Drawable draw = this.getResources().getDrawable(R.drawable.srvmng);
         text.setCompoundDrawablesWithIntrinsicBounds(null, draw, null,null);
         text.setText("应用");

         text1 = (TextView) findViewById(R.id.TextView02);
         Drawable draw1 = this.getResources().getDrawable(R.drawable.srvmng);
         int w = draw1.getIntrinsicWidth();
         int h = draw1.getIntrinsicHeight();
         Rect rect = draw1.getBounds();
         text1.setCompoundDrawablesWithIntrinsicBounds(null, zoomDrawable(draw1,32,32), null,null);
         text1.setText("设置");
     }

     static Drawable zoomDrawable(Drawable drawable, int w, int h)
     {
               int width = drawable.getIntrinsicWidth();
               int height= drawable.getIntrinsicHeight();
               Bitmap oldbmp = drawableToBitmap(drawable); // drawable转换成bitmap
               Matrix matrix = new Matrix();   // 创建操作图片用的Matrix对象
               float scaleWidth = ((float)w / width);   // 计算缩放比例
               float scaleHeight = ((float)h / height);
               matrix.postScale(scaleWidth, scaleHeight);         // 设置缩放比例
               Bitmap newbmp = Bitmap.createBitmap(oldbmp, 0, 0, width, height, matrix, true);       // 建立新的bitmap，其内容是对原bitmap的缩放后的图
               return new BitmapDrawable(newbmp);       // 把bitmap转换成drawable并返回
     }

     static Bitmap drawableToBitmap(Drawable drawable) // drawable 转换成bitmap
     {
               int width = drawable.getIntrinsicWidth();   // 取drawable的长宽
               int height = drawable.getIntrinsicHeight();
               Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888:Bitmap.Config.RGB_565;         // 取drawable的颜色格式
               Bitmap bitmap = Bitmap.createBitmap(width, height, config);     // 建立对应bitmap
               Canvas canvas = new Canvas(bitmap);         // 建立对应bitmap的画布
               drawable.setBounds(0, 0, width, height);
               drawable.draw(canvas);      // 把drawable内容画到画布中
               return bitmap;
     }

 }

显示效果： 

 

转自： http://qq361119908.iteye.com/blog/632837