public class MainActivity extends AppCompatActivity {
private ImageSwitcher imageSwitcher;
private Gallery gallery;
private ImageAdapter imageAdapter;
@RequiresApi(api = Build.VERSION_CODES.M)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageSwitcher = (ImageSwitcher) findViewById(R.id.imageswitch);
gallery = (Gallery) findViewById(R.id.gallery);
imageSwitcher.setInAnimation(this,android.R.anim.fade_in);
imageSwitcher.setOutAnimation(this,android.R.anim.fade_out);
imageSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
@Override
public View makeView() {
ImageView view = new ImageView(MainActivity.this);
view.setScaleType(ImageView.ScaleType.FIT_CENTER);
view.setLayoutParams(new ImageSwitcher.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT ));
//这种也可以,不过一定是FrameLayout
View inflate = LayoutInflater.from(MainActivity.this).inflate(R.layout.image_item, null);
return inflate;
}
});
imageAdapter = new ImageAdapter(MainActivity.this);
gallery.setAdapter(imageAdapter);
gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Integer[] integers = imageAdapter.getmImageIds();
// imageSwitcher.setImageResource(integers[position%integers.length]);
ImageView image = (ImageView) imageSwitcher.findViewById(R.id.image);
image.setImageResource(integers[position%integers.length]);
}
});
}
}
//视图中间的位置不知怎么获取
