我正在使用 Timertask 使用 viewpager 滚动图像。我需要显示所有图像，然后它会自动移动到类别（无点击操作）。
public class GalleryActviity extends AppCompatActivity {
Timer timer;
LinearLayout images_lay;
ArrayList<String> arraylist = new ArrayList<String>();
List<String> tempimages = new ArrayList<String>();
ViewPager mPager ;
private static int currentPage = 0
List<String> dealimages = new ArrayList<>();
ArrayList<DetailImage> detail_images = new ArrayList<DetailImage>();
@Override
protected void onCreate( Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gallery);
images_lay =(LinearLayout)findViewById(R.id.images_lay);
mPager = (ViewPager) findViewById(R.id.pager);
Intent in = getIntent();
Log.v("Tag_resid",""+in.getStringExtra("restid"));
String restid = in.getStringExtra("restid");
restaurntrestid(restid);
}
private void restaurntrestid(String restid) {
ServiceClient serviceClient = ServiceUtil.getServiceClient();
serviceClient.restaurntrestid(restid, restidcallback);
}
Callback<JsonObject> restidcallback = new Callback<JsonObject>() {
@Override
public void success(final JsonObject cusinerestaurantsinfo, Response response) {
imagesDeatail(cusinerestaurantsinfo);
}
@Override
public void failure(RetrofitError error) {
}
};
private void imagesDeatail(JsonObject cusinerestaurantsinfo) {
try {
JsonArray restaurant_imagesarray = cusinerestaurantsinfo.get("restaurant_images")
.getAsJsonArray();
for (int i = 0; i < restaurant_imagesarray.size(); i++) {
String url = restaurant_imagesarray.get(i).getAsJsonObject().get("url").getAsString();
String type = restaurant_imagesarray.get(i).getAsJsonObject().get("type").getAsString();
if(!arraylist.contains(type)){
arraylist.add(type);
// type means category like food, menu, logo...etc(dynamic data)
}
dealimages.add(url);
DetailImage detail = new DetailImage();
detail.setType(type);
detail.setUrl(url);
detail_images.add(detail);
}
mPager.setAdapter(new DealAdapter(GalleryActviity.this, dealimages));
imageRotator(1);
imageshow();
} catch (Exception e) {
e.printStackTrace();
}
}
public void imageRotator(int seconds) {
currentPage = 0;
timer = new Timer();
timer.scheduleAtFixedRate(new ImageRotateTask(), 0, seconds * 3000);
}
class ImageRotateTask extends TimerTask {
@Override
public void run() {
runOnUiThread(new Runnable() {
public void run() {
if (currentPage == dealimages.size() ) {
timer.cancel();
//Something here
}
else {
mPager.setCurrentItem(currentPage++, true);
}
}
});
}
}
private void imageshow(){
for(int i = 0; i < arraylist.size(); i++) {
final Button txtview = new Button(this);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
layoutParams.setMargins(0, 0, 0, 0);
if(i == 0){
txtview.setText("All");
txtview.setBackgroundColor(getResources().getColor(R.color.navigationBarwhite));
txtview.setTextColor(getResources().getColor(R.color.colorPrimary));
}
else {
txtview.setText(arraylist.get(i));
txtview.setBackgroundColor(getResources().getColor(R.color.navigationBarwhite));
txtview.setTextColor(getResources().getColor(R.color.navigationBarColor));
}
txtview.setLayoutParams(layoutParams);
txtview.setTextSize(12);
txtview.setAllCaps(false);
txtview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(!txtview.getText().toString().equalsIgnoreCase("All")){
//image_display(txtview.getText().toString().trim());
txtview.setBackgroundColor(getResources().getColor(R.color.navigationBarwhite));
txtview.setTextColor(getResources().getColor(R.color.colorPrimary));
}
else if(txtview.getText().toString().equalsIgnoreCase("All")){
imageRotator(1);
mPager.setAdapter(new DealAdapter(GalleryActviity.this, dealimages));
}
}
});
images_lay.addView(txtview);
}
}
}
在这里，我在“全部”部分显示所有图像。如何显示每个类别的剩余图像。我添加了将显示图像的屏幕截图。“全部”表示将在此部分显示的每个类别类型的图像。
在这里，我可以显示“全部”部分中的所有图像，现在如何移动以根据类别自动显示图像。
