将多个自定义元素设置为MultiAutoCompleteTextView：Android [英] Setting multiple custom elements to MultiAutoCompleteTextView : Android

问题描述

继续我的上一篇文章后，我可以设置多个元素到 MultiAutoCompleteTextView ，但我无法包装那些项目与自定义背景和关闭按钮在该链接图片。

我可以用单个元素做同样的事情，但对于多个，运气不好。

是我尝试的。

//将文本设置为MultiAutoCompleteTextView

  private void setTextSample（String contactName）{
 
 final SpannableStringBuilder sb = new SpannableStringBuilder 
 TextView tv =（TextView）LayoutInflater.from（this）.inflate（R.layout.textview，null）; 
 tv.setText（contactName）; 
 BitmapDrawable bd =（BitmapDrawable）convertViewToDrawable（tv）; 
 bd.setBounds（0，0，bd.getIntrinsicWidth（），bd.getIntrinsicHeight（））; 
 
 sb.append（contactName +，）; 
 sb.setSpan（new ImageSpan（bd），sb.length（） - （contactName.length（）+ 1），
 sb.length（） -  1，Spannable.SPAN_EXCLUSIVE_EXCLUSIVE）; 
 
 mMultiAutoCompleteTextView.setText（sb）; 
} 
  

p>

  private static Object convertViewToDrawable（View view）{
 int spec = MeasureSpec.makeMeasureSpec 0，MeasureSpec.UNSPECIFIED）; 
 view.measure（spec，spec）; 
 view.layout（0，0，view.getMeasuredWidth（），view.getMeasuredHeight（））; 
 Bitmap b = Bitmap.createBitmap（view.getMeasuredWidth（），view.getMeasuredHeight（），
 Bitmap.Config.ARGB_8888）; 
 Canvas c = new Canvas（b）; 
 c.translate（-view.getScrollX（），-view.getScrollY（））; 
 view.draw（c）; 
 view.setDrawingCacheEnabled（true）; 
 Bitmap cacheBmp = view.getDrawingCache（）; 
 Bitmap viewBmp = cacheBmp.copy（Bitmap.Config.ARGB_8888，true）; 
 view.destroyDrawingCache（）; 
 return new BitmapDrawable（viewBmp）; 
} 
  

非常感谢任何帮助。

编辑：

如果我这样做

  mMultiAutoCompleteTextView.setText（mMultiAutoCompleteTextView.getText（）。toString（）+，+ sb）; 
  

我收到多个文本，但他们没有自定义背景。 >多个元素的示例如下所示：

 
  class MyMultiAutoCompleteTextView extends MultiAutoCompleteTextView {
 
 public MyMultiAutoCompleteTextView（Context context）{
 super（context）; 
} 
 
 @Override 
 protected void replaceText（CharSequence text）{
 Log.d（TAG，replaceText+ text.getClass（）++文本）; 
 super.replaceText（getSpanned（text.toString（）））; 
} 
} 
 
 private Spanned getSpanned（String name）{
 TextView tv =（TextView）LayoutInflater.from（this）.inflate（R.layout.test ， 空值）; 
 tv.setText（name）; 
 SpannableStringBuilder sb = new SpannableStringBuilder（name）; 
 sb.setSpan（new ViewReplacementSpan（tv），0，sb.length（），Spannable.SPAN_EXCLUSIVE_EXCLUSIVE）; 
 return sb; 
} 
 
类ViewReplacementSpan extends DynamicDrawableSpan {
 private View v; 
 private drawable drawable; 
 
 public ViewReplacementSpan（View v）{
 super（ALIGN_BOTTOM）; 
 this.v = v; 
 int spec = MeasureSpec.makeMeasureSpec（0，MeasureSpec.UNSPECIFIED）; 
 v.measure（spec，spec）; 
 v.layout（0，0，v.getMeasuredWidth（），v.getMeasuredHeight（））; 
 drawable = new SpanDrawable（）; 
 drawable.setBounds（0，0，v.getMeasuredWidth（），v.getMeasuredHeight（））; 
} 
 
 @Override 
 public Drawable getDrawable（）{
 return drawable; 
} 
 
 class SpanDrawable extends Drawable {
 @Override 
 public void draw（Canvas canvas）{
 canvas.clipRect（getBounds（））; 
 v.draw（canvas）; 
} 
 
 @Override 
 public void setAlpha（int alpha）{
} 
 
 @Override 
 public void setColorFilter ColorFilter cf）{
} 
 
 @Override 
 public int getOpacity（）{
 return PixelFormat.TRANSLUCENT; 
} 
} 
} 
  

onCreate（）：

  LinearLayout ll = new LinearLayout（this）; 
 ll.setOrientation（LinearLayout.VERTICAL）; 
 
 MultiAutoCompleteTextView mactv = new MyMultiAutoCompleteTextView（this）; 
 ArrayAdapter< Spanned> a = new ArrayAdapter< Spanned>（this，android.R.layout.simple_dropdown_item_1line）; 
 String [] names = {Jane，John，Mary，Mark}; 
 for（String name：names）{
 a.add（getSpanned（name））; 
} 
 
 Tokenizer tokenizer = new MultiAutoCompleteTextView.CommaTokenizer（）; 
 mactv.setTokenizer（tokenizer）; 
 mactv.setAdapter（a）; 
 mactv.setThreshold（1）; 
 SpannableStringBuilder sb = new SpannableStringBuilder（）; 
 for（int i = 0; i <2; i ++）{
 sb.append（tokenizer.terminateToken（a.getItem（i）））; 
} 
 mactv.setText（sb）; 
 ll.addView（mactv）; 
 
 TextView tv = new TextView（this）; 
 tv.setGravity（Gravity.CENTER）; 
 tv.setText（try：Jane，John，Mary or Mark）; 
 tv.setTextSize（32）; 
 ll.addView（tv）; 
 setContentView（ll）; 
  

Continuing from my previous post, I was able to set multiple elements to the MultiAutoCompleteTextView but I was not able to wrap those items with custom background and close button as in that link picture.

I was able to do the same with single element but for multiple, ran out of luck.

This is what I tried.

// set text to MultiAutoCompleteTextView

private void setTextSample(String contactName) {

    final SpannableStringBuilder sb = new SpannableStringBuilder();
    TextView tv = (TextView) LayoutInflater.from(this).inflate(R.layout.textview, null);
    tv.setText(contactName);
    BitmapDrawable bd = (BitmapDrawable) convertViewToDrawable(tv);
    bd.setBounds(0, 0, bd.getIntrinsicWidth(), bd.getIntrinsicHeight());

    sb.append(contactName + ",");
    sb.setSpan(new ImageSpan(bd), sb.length()-(contactName.length()+1), 
            sb.length()-1,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

    mMultiAutoCompleteTextView.setText(sb);
}

// wrap text with custom elements

private static Object convertViewToDrawable(View view) {
  int spec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
  view.measure(spec, spec);
  view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
  Bitmap b = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(),
            Bitmap.Config.ARGB_8888);
  Canvas c = new Canvas(b);
  c.translate(-view.getScrollX(), -view.getScrollY());
  view.draw(c);
  view.setDrawingCacheEnabled(true);
  Bitmap cacheBmp = view.getDrawingCache();
  Bitmap viewBmp = cacheBmp.copy(Bitmap.Config.ARGB_8888, true);
  view.destroyDrawingCache();
  return new BitmapDrawable(viewBmp);
}

Any help is greatly appreciated.

Edit :

If I do

mMultiAutoCompleteTextView.setText(mMultiAutoCompleteTextView.getText().toString()+", "+sb);

I am getting multiple texts but they are not wrapped with custom background. Not getting where I am going wrong.

Edit :

Sample multiple elements would look something like this

解决方案

try this:

class MyMultiAutoCompleteTextView extends MultiAutoCompleteTextView {

    public MyMultiAutoCompleteTextView(Context context) {
        super(context);
    }

    @Override
    protected void replaceText(CharSequence text) {
        Log.d(TAG, "replaceText " + text.getClass() + " " + text);
        super.replaceText(getSpanned(text.toString()));
    }
}

private Spanned getSpanned(String name) {
    TextView tv = (TextView) LayoutInflater.from(this).inflate(R.layout.test, null);
    tv.setText(name);
    SpannableStringBuilder sb = new SpannableStringBuilder(name);
    sb.setSpan(new ViewReplacementSpan(tv), 0, sb.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    return sb;
}

class ViewReplacementSpan extends DynamicDrawableSpan {
    private View v;
    private Drawable drawable;

    public ViewReplacementSpan(View v) {
        super(ALIGN_BOTTOM);
        this.v = v;
        int spec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
        v.measure(spec, spec);
        v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
        drawable = new SpanDrawable();
        drawable.setBounds(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
    }

    @Override
    public Drawable getDrawable() {
        return drawable;
    }

    class SpanDrawable extends Drawable {
        @Override
        public void draw(Canvas canvas) {
            canvas.clipRect(getBounds());
            v.draw(canvas);
        }

        @Override
        public void setAlpha(int alpha) {
        }

        @Override
        public void setColorFilter(ColorFilter cf) {
        }

        @Override
        public int getOpacity() {
            return PixelFormat.TRANSLUCENT;
        }
    }
}

test it with the following in onCreate():

LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);

MultiAutoCompleteTextView mactv = new MyMultiAutoCompleteTextView(this);
ArrayAdapter<Spanned> a = new ArrayAdapter<Spanned>(this, android.R.layout.simple_dropdown_item_1line);
String[] names = { "Jane", "John", "Mary", "Mark" };
for (String name: names) {
    a.add(getSpanned(name));
}

Tokenizer tokenizer = new MultiAutoCompleteTextView.CommaTokenizer();
mactv.setTokenizer(tokenizer);
mactv.setAdapter(a);
mactv.setThreshold(1);
SpannableStringBuilder sb = new SpannableStringBuilder();
for (int i = 0; i < 2; i++) {
    sb.append(tokenizer.terminateToken(a.getItem(i)));
}
mactv.setText(sb);
ll.addView(mactv);

TextView tv = new TextView(this);
tv.setGravity(Gravity.CENTER);
tv.setText("try: Jane, John, Mary or Mark");
tv.setTextSize(32);
ll.addView(tv);
setContentView(ll);

这篇关于将多个自定义元素设置为MultiAutoCompleteTextView：Android的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！