Android 调整自动旋转的位图的大小

我有一个代码，在该代码中，我调用gallery来选择我在imageview中显示的图像。这可以很好地工作并保持纵横比。 问题是当图像大小大于2048 x 2048时 在这种情况下，我使用此代码：

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

uriIsNowAbitmap= MediaStore.Images.Media.getBitmap（this.getContentResolver（）， 选择eImage（URI）

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

}

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

也可以正常工作，但有问题。图像不是所示的类型

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

为了解释，我举了这个例子。这是画廊的图片：

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

当我选择图片并将其指定给imageview时，会旋转显示：

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

我不明白为什么。我已经尝试了一千种方法，阅读了很多关于调整大小的信息，我已经阅读了这个网站（）的线程和示例代码，还有更多。。。但没有任何帮助。 其目的是以这种方式显示……使用photoshop制作：）

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

我很感激任何帮助，花了很多时间试图修复它

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

---

关于

首先，您必须检测方向的变化，当您检测到横向方向的变化时，您只需相应地旋转位图。为了在下面的onConfigurationChanged（）方法中访问位图，您必须将位图虚拟缩放声明为全局变量：

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

使用活动的OnConfiguration Changed方法检测方向的更改。请参阅以下代码：

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);

if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Matrix matrix = new Matrix();
matrix.postRotate(90);
Bitmap rotated = Bitmap.createBitmap(avatarScaled, 0, 0, avatarScaled.getWidth(),
                                     avatarScaled.getHeight(), matrix, true);
previewNewAvatar.setImageBitmap(rotated);
} 
}

您还必须编辑清单文件中的相应元素，以包含android:configChanges，请参见下面的代码：

              //...

          int height = uriIsNowAbitmap.getHeight();
          int width = uriIsNowAbitmap.getWidth();

          if ((width>=2048)||(height>=2048)) {

              int newheight  = height/10; // height in pixels
              int newwidth = width/10; // width in pixels    
              Bitmap avatarScaled = Bitmap.createScaledBitmap(uriIsNowAbitmap,  newwidth, newheight, true);

              previewNewAvatar.setImageBitmap(avatarScaled);

<activity android:name=".MyActivity"
      android:configChanges="orientation|keyboardHidden"
      android:label="@string/app_name">

不幸的是，您提出的解决方案无法正常工作，因为同样的情况仍然存在。非常感谢您的关注。还有其他想法吗？@MiguelC你能发布更多的代码吗，最好是这个问题出现的整个活动？你解决了吗？我也有同样的问题。你是如何处理这个问题的？？