在RelativeLayout Android内部移动ImageView

Question

I have An imageView with android:scaleType="matrix"

<ImageView
    android:id="@+id/imageView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_below="@+id/textView1"
    android:layout_marginTop="20dp"
    android:scaleType="matrix"
    android:src="@drawable/ic_launcher" />

I want to drag this ImageView to left to look at the parts of image which were off screen.

In other words I want to move this image to the point where I mark the point on ImageView .

Please help. Thanks

Answer 1

Put your Imageview Inside Framelayout and use following code to move it :

Java Code:

_frameLayout.setX(Position);

_frameLayout.setY(Position);

Example XML :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/background_material_dark" >

    <ImageView 
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:background="@drawable/ic_launcher"/>

    <FrameLayout
        android:id="@+id/framelayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="40dp"
        android:background="#ffffff" >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >

            <ImageView
                android:id="@+id/img"
                android:layout_width="110dp"
                android:layout_height="200dp"
                android:layout_centerHorizontal="true"
                android:background="@drawable/ic_launcher" />
        </RelativeLayout>
    </FrameLayout>