Android/画像/画像path表示

activity_main.xml

<ImageView
               android:id="@+id/image1"
               android:layout_width="match_parent"
               android:layout_height="match_parent" />

MainActivity.java

File imgFile = new File("/sdcard/test1.png");
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
iv.setImageBitmap(myBitmap);