This article shares the specific code for Android custom Banner carousel effect display for your reference. The specific content is as follows
Customize View Layout
<RelativeLayout xmlns:andro
android:layout_width="match_parent"
android:layout_height="wrap_content">
<.
android:
android:layout_width="match_parent"
android:layout_height="200dp">
</.>
<LinearLayout
android:
android:layout_centerHorizontal="true"
android:layout_alignBottom="@+id/banner_view_pager"
android:layout_marginBottom="10dp"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</LinearLayout>
</RelativeLayout>
Customize View body content
public class CustomBanner extends FrameLayout {
@BindView(.banner_view_pager)
ViewPager bannerViewPager;
@BindView(.linear_bannner)
LinearLayout linearBannner;
private List<String> list;
private int time = 2;
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
if ( == 0) {
int currentItem = ();
(currentItem + 1);
//Send again sendEmptyMessageDelayed(0, time * 1000);
}
}
};
private List<ImageView> listDoc;
private OnClickLisner onClickLisner;
public CustomBanner(@NonNull Context context) {
super(context);
init();
}
public CustomBanner(@NonNull Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
init();
}
public CustomBanner(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
/**
* Initialization
*/
private void init() {
View view = (getContext(), .bannner_layout, this);
(this, view);
}
/**
* Provide external method of setting image path
*/
public void setImageUrls(List<String> list) {
= list;
if (list == null) {
return;
}
//Set the adapter LunBoAdapter lunBoAdapter = new LunBoAdapter(getContext(), list);
(lunBoAdapter);
initDoc();
//Show a certain position in the middle (() * 10000);
//Use handler to automatically carousel (0, time * 1000);
//Stection event of changing status (new () {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
// When selecting a certain page, switch the background of the dots for (int i = 0; i < (); i++) {
if (position % () == i) {
(i).setBackgroundResource(.shape_01);
} else {
(i).setBackgroundResource(.shape_02);
}
}
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}
/**
* Initialize small dots
*/
private void initDoc() {
//Create a collection to record these small dots listDoc = new ArrayList<>();
//Clear the layout ();
for (int i = 0; i < (); i++) {
ImageView docImage = new ImageView(getContext());
if (i == 0) {
(.shape_01);
} else {
(.shape_02);
}
//Add to collection (docImage);
//Add to linear layout params = new (.WRAP_CONTENT, .WRAP_CONTENT);
(5, 0, 5, 0);
(docImage, params);
}
}
/**
* Provide carousel time
*/
public void setTimeSecond(int time) {
= time;
}
/**
* Click Event
*
* @param onClickLisner
*/
public void setClickListner(OnClickLisner onClickLisner) {
= onClickLisner;
}
private class LunBoAdapter extends PagerAdapter {
private List<String> list;
private Context context;
public LunBoAdapter(Context context, List<String> list) {
= context;
= list;
}
@Override
public int getCount() {
return Integer.MAX_VALUE;
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
@Override
public Object instantiateItem(ViewGroup container, final int position) {
//Create imageView ImageView imageView = new ImageView(context);
(.FIT_XY);
//Load this picture (context).load((position % ())).into(imageView);
//Click event (new OnClickListener() {
@Override
public void onClick(View view) {
//trigger (position % ());
}
});
//Touch Event (new OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
switch (()) {
case MotionEvent.ACTION_DOWN:
//Cancel the message and callback on the handler (null);
break;
case MotionEvent.ACTION_MOVE:
(null);
break;
case MotionEvent.ACTION_CANCEL:
(0, time * 1000);
break;
case MotionEvent.ACTION_UP:
(0, time * 1000);
break;
}
return false;
}
});
//Add to container (imageView);
//return
return imageView;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
((View) object);
}
}
public interface OnClickLisner {
void onItemClick(int position);
}
}
Custom dots
public class CountView extends View implements {
private int count = 0;
public CountView(Context context) {
super(context);
init();
}
public CountView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
init();
}
public CountView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
//Initialization method private void init() {
(this);
}
@Override
protected void onDraw(Canvas canvas) {
(canvas);
Paint paint = new Paint();
();
(true);
();
//round (300,300,200,paint);
();
(100);
String text = (count);
//Get the width and height of the text Rect rect = new Rect();
(text,0,(),rect);
(text,()/2,300+()/2,paint);
}
@Override
public void onClick(View view) {
count ++;
//Repaint postInvalidate();
}
}
Small dot shapepe
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:andro> <solid android:color="#00ff00"/> <corners android:radius="10dp"/> <size android:height="10dp" android:width="10dp"/> </shape> <?xml version="1.0" encoding="utf-8"?> <shape xmlns:andro> <solid android:color="#ff0000"/> <corners android:radius="10dp"/> <size android:height="10dp" android:width="10dp"/> </shape>
Running in Main
public class MainActivity extends AppCompatActivity {
private CustomBanner customBanner;
@Override
protected void onCreate(Bundle savedInstanceState) {
(savedInstanceState);
setContentView(.activity_main);
customBanner = findViewById(.custom_banner);
getDataFromNet();
}
private void getDataFromNet() {
("/ad/getAd", new Callback() {
private List<String> list;
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
if (()){
String json = ().string();
final HomeBean detalBean = new Gson().fromJson(json,);
list = new ArrayList<>();
List<> data = ();
for (int i = 0; i < (); i++) {
String icon = (i).getIcon();
(icon);
}
runOnUiThread(new Runnable() {
@Override
public void run() {
//Set time (5);
//Set the display carousel (list);
// Events of the click to jump to the details page of banner (new OnBannerListener() {
@Override
public void OnBannerClick(int position) {
List<> datab = ();
if ((position).getType() == 0) {
Intent intent = new Intent(getActivity(), );
("databurl", (position).getUrl());
startActivity(intent);
} else {
(getContext(), "Redirect to product details page soon", Toast.LENGTH_SHORT).show();
}
}
});
}
});
}
}
});
}
}
WebView page
public class WebViewActivity extends AppCompatActivity {
private WebView web_view;
@Override
protected void onCreate(Bundle savedInstanceState) {
(savedInstanceState);
setContentView(.activity_web_view);
web_view = findViewById(.web_view);
String databurl = getIntent().getStringExtra("databurl");
web_view.loadUrl(databurl);
//A series of settings for webview web_view.setWebViewClient(new WebViewClient());//Open in the current application, instead of going to the browser WebSettings settings = web_view.getSettings();
(true);
(true);
}
}
The above is all the content of this article. I hope it will be helpful to everyone's study and I hope everyone will support me more.