小编pks*_*pks的帖子

我正在使用自定义视图,并且我正在使用画布,用户可以在其中绘制任何内容,之后我想将该图像保存在SD卡中,但是无法做到这一点.不知道发生了什么.

else if(view.getId()==R.id.save_btn){
            //save drawing
            AlertDialog.Builder saveDialog = new AlertDialog.Builder(this);
            saveDialog.setTitle("Save drawing");
            saveDialog.setMessage("Save drawing to device Gallery?");
            saveDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener(){
                private FileOutputStream fOut;

                public void onClick(DialogInterface dialog, int which){
                    //save drawing
                    drawView.setDrawingCacheEnabled(true);

                    //attempt to save
                    String imgSaved = MediaStore.Images.Media.insertImage(
                            getContentResolver(), drawView.getDrawingCache(),
                            UUID.randomUUID().toString()+".png", "drawing");
                    //feedback
                    if(imgSaved!=null){
                        Toast savedToast = Toast.makeText(getApplicationContext(), 
                                "Drawing saved to Gallery!", Toast.LENGTH_SHORT);
                        savedToast.show();
                    }
                    else{
                        Toast unsavedToast = Toast.makeText(getApplicationContext(), 
                                "Oops! Image could not be saved.", Toast.LENGTH_SHORT);
                        unsavedToast.show();
                    }
                    drawView.destroyDrawingCache();
                }
            });
            saveDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener(){
                public void onClick(DialogInterface dialog, …

我试图在用户单击标记时从自定义infoWindow中的URL加载图像.我能够加载其他细节,但图像没有加载它.我正在使用Picasso库为我这样做.我搜索了许多相关主题并查看了解决方案,但无法理解应用哪种解决方案来解决我的问题.我正在使用Web服务调用来获取所需的数据.

这是我的代码:

  @Override
        public View getInfoContents(Marker arg0) {

            //marker.showInfoWindow();
            return null;
        }

        @Override
        public View getInfoWindow(Marker arg0) 
        {

            View v = getLayoutInflater().inflate(R.layout.map_infowindow, null);


             for(int i=0 ; i<lstMain.size();i++)
                {
                    Pojo b=lstMain.get(i);
                    double slat= Double.parseDouble(b.getLatitude());
                    double slng= Double.parseDouble(b.getLongitude());

                    double lat= Math.round(slat*100000.0)/100000.0;
                    double lng= Math.round(slng*100000.0)/100000.0;

                    String s1=String.valueOf(lat);
                    String s2=String.valueOf(lng);

                    Log.v("comparing latilongi pojo===>", lat+" , "+lng);
                    Log.v("comparing latilongi marker===>", Clickedlatitude+" , "+Clickedlongitude);

                    if(s1.equals(String.valueOf(Clickedlatitude)) && s2.equals(String.valueOf(Clickedlongitude)))
                    {
                        txtDname=(TextView)v.findViewById(R.id.infoDoctorName);
                        txtDspe=(TextView)v.findViewById(R.id.infoDoctorSpe);
                        txtDaddress=(TextView)v.findViewById(R.id.infoDoctorAddress);
                        imgUrl=(ImageView)v.findViewById(R.id.infoDoctorImage);
                        String url=b.getPhotoURL();

                        txtDname.setText(b.getDoctorName());
                        txtDspe.setText(b.getSpecialization());
                        txtDaddress.setText(b.getAddress1()+" , "+b.getAddress2());


                        Picasso.with(MapActivity.this)
                        .load(url)
                        .placeholder(R.drawable.ic_launcher)
                        .error(R.drawable.ic_launcher).resize(50, 50)
                        .into(imgUrl);


                    } …

我一直在尝试通过对讲来实现具有可访问性的 ViewPager2，但焦点没有移出第二个部分可见项目。我想通过对讲和可访问性来遍历和滚动 viewpager2，但无法实现这一点。

--------------
| <item> | <item> | <item> | <item> | <item> |
--------------

请帮助我。我已经搜索了很多尝试了各种东西，但没有任何对我有用。

 ViewPager2.accessibilityDelegate = object : AccessibilityDelegate() {
        override fun onRequestSendAccessibilityEvent(
            host: ViewGroup?,
            child: View?,
            event: AccessibilityEvent?
        ): Boolean {
            if (event?.eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED) {
                ViewPager2.currentItem = ViewPager2.indexOfChild(child)
            }
            return super.onRequestSendAccessibilityEvent(host, child, event)
        }
    }