Android 如何使用毕加索更新选择器（StateListDrawable）图像

我想使用毕加索从他们自己的url加载两个图像，并将它们用作状态列表，如：

---

但它不起作用。

我认为您无法在运行时写入apk的drawable文件夹。但是您可以在代码中动态地执行您想要的操作

# Convert Picasso's Bitmap to Drawable
Drawable d = new BitmapDrawable(getResources(),bitmap); 

#Create StateListDrawable
StateListDrawable stateList = new StateListDrawable();
        stateList.addState(new int[] {android.R.attr.state_pressed},drawable1);
        stateList.addState(new int[] {android.R.attr.state_focused},drawable2);

#Add Background
MyButton.setBackgroundDrawable(stateList);

使用以下行上的代码从毕加索那里获取位图

//To Load image from Picasso
private Target target = new Target() {
      @Override
      public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {       
      }
      @Override
      public void onBitmapFailed() {
      }
}

private void someMethod() {
   Picasso.with(this).load("url").into(target);
}

@Override 
public void onDestroy() {  // could be in onPause or onStop
   Picasso.with(this).cancelRequest(target);
   super.onDestroy();
}

---

多亏了

Maddy

最终代码如下所示：

     final StateListDrawable drawable = new StateListDrawable();
        final Picasso picasso = Picasso.with(this.context);
        target_normal = new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                Drawable drawImage = new BitmapDrawable(context.getResources(), bitmap);

                drawable.addState(new int[]{android.R.attr.state_enabled}, drawImage);
                picasso.load(context.getString(R.string.server_address)+dItem.getIconNormal()).into
                        (target_normal);

                target_selected = new Target() {
                    @Override
                    public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                        Drawable drawImage = new BitmapDrawable(context.getResources(), bitmap);

                        drawable.addState(new int[]{android.R.attr.state_selected}, drawImage);
                        drawable.addState(new int[]{android.R.attr.state_checked}, drawImage);

                        picasso.load(context.getString(R.string.server_address)+dItem.getIconSelected())
                               .into(target_selected);
                        drawerHolder.icon.setImageDrawable(drawable);
                    }

                    @Override
                    public void onBitmapFailed(Drawable errorDrawable) {

                    }

                    @Override
                    public void onPrepareLoad(Drawable placeHolderDrawable) {

                    }
                };
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {

            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {

            }
        };

        final StateListDrawable stateListDrawable = new StateListDrawable();
        final Picasso picasso = Picasso.with(this.context);
         // selected and checked state
        target_selected = new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                Drawable drawImage = new BitmapDrawable(context.getResources(), bitmap);
                stateListDrawable.addState(new int[]{android.R.attr.state_selected}, drawImage);
                stateListDrawable.addState(new int[]{android.R.attr.state_activated}, drawImage);
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {

            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {

            }
        };
        picasso.load(context.getString(R.string.server_address_http) + dItem.getIconSelected())
               .into(target_selected);
        target_normal = new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                Drawable drawImage = new BitmapDrawable(context.getResources(), bitmap);
                stateListDrawable.addState(StateSet.WILD_CARD, drawImage);
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {

            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {

            }
        };
        picasso.load(context.getString(R.string.server_address_http) + dItem.getIconNormal())
               .into(target_normal);
        drawerHolder.icon.setImageDrawable(stateListDrawable);

---

我知道，但我不知道如何与毕加索一起使用它！谢谢你的帮助。我更新了我的问题，你能帮我更多吗？单独打电话给毕加索。用这个。加载（“url”）。到（目标）；不在onBitmapLoaded中。。。

        final StateListDrawable stateListDrawable = new StateListDrawable();
        final Picasso picasso = Picasso.with(this.context);
         // selected and checked state
        target_selected = new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                Drawable drawImage = new BitmapDrawable(context.getResources(), bitmap);
                stateListDrawable.addState(new int[]{android.R.attr.state_selected}, drawImage);
                stateListDrawable.addState(new int[]{android.R.attr.state_activated}, drawImage);
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {

            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {

            }
        };
        picasso.load(context.getString(R.string.server_address_http) + dItem.getIconSelected())
               .into(target_selected);
        target_normal = new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                Drawable drawImage = new BitmapDrawable(context.getResources(), bitmap);
                stateListDrawable.addState(StateSet.WILD_CARD, drawImage);
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {

            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {

            }
        };
        picasso.load(context.getString(R.string.server_address_http) + dItem.getIconNormal())
               .into(target_normal);
        drawerHolder.icon.setImageDrawable(stateListDrawable);