dynamic set image path
in my project there are number of images having back and forward images and all images having common layout.on clicking back and next buttons new images should displayed.
private int imageCounter = 0;
private ImageView imageView;
private int[] imageArray = {R.drawable.image_w_lbl_0, R.drawable.image_w_lbl_1,};
private int index_count = 0;
@Override
public void onCreate(Bundle savedInstanceState)
{
setContentView(R.layout.frame0);//this one is the common parent layout for all imageviews
super.onCreate(savedInstanceState);
imageView = new ImageView(this);
ImageButton next = (ImageButton) findViewById(R.id.next);
ImageButton back = (ImageButton) findViewById(R.id.back);
next.setOnClickListener(this);
back.setOnClickListener(this);
//show the default image
this.loadImage(imageArray[0]);
}
@Override
public void onClick(View v)
{
int imagePath = 0;
// TODO Auto-generated method stub
switch (v.getId())
{
case R.id.next:
if(imageCounter < 25)
{
imagePath = imageArray[index_count];
}
imageCounter++;
break;
case R.id.back:
if(imageCounter > 0)
{
//imagePath =
}
imageCounter--;
break;
}
this.loadImage(imagePath);
}
private void loadImage(int imagePath)
{
imageView.setImageResource(imagePath);
}
I am able to see my layout only in output having back and forward buttons with black background not any image from my drawable folder.Layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
>
<ImageButton android:id="@+id/back" android:src="@drawable/btn_back"
android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="left" />
<ImageButton
android:id="@+id/next" android:src="@drawable/btn_next" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" />
</LinearLayout>
来自资源的图像数组(例如res / drawable-mdpi):
Integer[] imageArray = { "R.drawable.img1", "R.drawable.img2" }
...
imageView.setImageResource(imageArray[0]); // displays img1
Not very clear what you are asking, but do you want to do something like this:
imagePath=R.drawable.image_wo_lbl_0;
You can store image path in this way, if you actually want to do this.
imageView.setImageResource(R.drawable.img1)
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