android > 图片旋转

T3Activity.java

package t3.com;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Matrix;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.widget.ImageView;public class T3Activity extends Activity {    /** Called when the activity is first created. */private ImageView iv;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        iv = (ImageView)findViewById(R.id.iv);                Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),                 R.drawable.t);        int width = bitmapOrg.getWidth();         int height = bitmapOrg.getHeight();                 // 创建操作图片用的matrix对象        Matrix matrix =  new Matrix();        matrix.postRotate(270);//旋转度数                 Bitmap resizedBitmap = Bitmap.createBitmap(bitmapOrg, 0, 0,                 width, height, matrix, true);         BitmapDrawable bmd = new BitmapDrawable(resizedBitmap);         iv.setImageDrawable(bmd);            }  //\\}

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" ><RelativeLayout     android:layout_width="fill_parent"    android:layout_height="wrap_content"    > <ImageView      android:id="@+id/iv"        android:layout_width="wrap_content"        android:layout_centerInParent="true"        android:layout_height="wrap_content"        android:background="@android:color/transparent"            /></RelativeLayout></LinearLayout>

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