Android调用系统摄像头拍照并且调整图像尺寸  

findViewById(R.id.camera).setOnClickListener(new OnClickListener() { 

    @Override
    public void onClick(View v) {
    // TODO Auto-generated method stub
    Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(intent, 1);
    }
}); 

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data); 

if (resultCode == RESULT_OK) { 

    // 拍照保存完成后
    if(requestCode == 1) {
    String imgPath = getAbsoluteImagePath(data.getData());
    myDeputyView.clear();
    myDeputyView.insertImg(getSmallBitmap(imgPath));
    }
}
} 

/**
* 根据路径获得图片并压缩，返回旋转90度的bitmap用于显示
* */ 
public static Bitmap getSmallBitmap(String filePath) { 

final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filePath, options); 

options.inSampleSize = calculateInSampleSize(options, 750, 200);
options.inJustDecodeBounds = false; 

int scaleHeight=576;
int scaleWidth=768; 

Matrix matrix = new Matrix();
matrix.reset();  
matrix.setRotate(90);  

Bitmap myBitmap = BitmapFactory.decodeFile(filePath, options);
float mWidth = (float)scaleWidth / (float)myBitmap.getWidth(); // target缩放到的宽度   src原始宽度，这样算出来是个比率
float mHeight = (float)scaleHeight / (float)myBitmap.getHeight();
matrix.postScale(mWidth, mHeight);
System.out.println(myBitmap.getWidth()+"====myBitmap.getWidth()="+myBitmap.getHeight());
myBitmap = Bitmap.createBitmap(myBitmap, 0, 0, myBitmap.getWidth(),
    myBitmap.getHeight(),matrix, true);  

return myBitmap;
}

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