您好,我有两张图片,我正在使用画布合并这些图片
这是下面的代码
Intent intent = getIntent();
//bm is the image get from camera
bm = BitmapFactory.decodeFile(intent.getStringExtra("getdata"));
//this is simple white text image
bm1 = BitmapFactory.decodeResource(getResources(), R.drawable.txt_made_hawk_nelson);
imgSeletedPhoto = (ImageView) findViewById(R.id.imgSelectedPhoto);
int width = bm.getWidth();
int height = bm.getHeight();
int maxWidth = (width > bm1.getWidth() ? width : bm1.getWidth());
int maxHeight = (height > bm1.getHeight() ? height : bm1.getHeight());
// calculate the scale - in this case = 0.4f
float scaleWidth = ((float) maxWidth) / width;
float scaleHeight = ((float) maxHeight) / height;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
bmOverlay = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, true);
Canvas canvas = new Canvas(bmOverlay);
//canvas.drawBitmap(bm, 0, 0, null);
canvas.drawBitmap(bm1, 0, 50, null);
imgSeletedPhoto.setImageBitmap(bmOverlay);
} catch (Exception e) {
e.printStackTrace();
}
我想缩放图像,图像应该如下所示
但不是通过上面的代码,它看起来像
这个文件的 XML 代码是
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:weightSum="10" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="7" > // this is covering 70% of screen
<ImageView
android:id="@+id/imgSelectedPhoto"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerInParent="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:background="#baca9d"
android:gravity="center"
android:orientation="vertical"
android:paddingLeft="10dp"
android:paddingRight="10dp" >
任何人都可以帮助我如何拉伸图像并使其从底部和顶部充满并将文本放在中心