联系气泡编辑文本

Question

我正在尝试在 MultiAutoCompleteTextView 中创建联系人气泡，类似于它在 Google+ 应用程序中的实现方式。下面是一个屏幕截图：

.

我试图扩展 DynamicDrawableSpan 类，以便在一段文本的背景中获得可跨越的可绘制对象

public class BubbleSpan extends DynamicDrawableSpan {
  private Context c;

  public BubbleSpan(Context context) {
    super();
    c = context;
  }

  @Override
  public Drawable getDrawable() {
    Resources res = c.getResources();
    Drawable d = res.getDrawable(R.drawable.oval);
    d.setBounds(0, 0, 100, 20);
    return d;
  }
}

我的 oval.xml 可绘制对象定义如下：

 <?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
  <solid android:color="#352765"/>
  <padding android:left="7dp" android:top="7dp"
    android:right="7dp" android:bottom="7dp" />
  <corners android:radius="6dp" />
</shape>

在我的 Activity 类中有 MulitAutoCompleteTextView ，我设置气泡跨度如下：

 final Editable e = tv.getEditableText();
final SpannableStringBuilder sb = new SpannableStringBuilder();
sb.append("some sample text");
sb.setSpan(new BubbleSpan(getApplicationContext()), 0, 6, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
e.append(sb);

但是，在字符串的前 6 个字符后面显示的不是椭圆形，而是这些字符不可见，背景中也没有椭圆形可绘制对象。

如果我将 BubbleSpan 的 getDrawable() 方法更改为使用 .png 而不是可绘制的形状：

 public Drawable getDrawable() {
  Resources res = c.getResources();
  Drawable d = res.getDrawable(android.R.drawable.bottom_bar);
  d.setBounds(0, 0, 100, 20);
  return d;
}

然后 .png 将显示，但字符串中作为跨度一部分的字符将不会显示。我怎样才能使 span 中的字符显示在前景中，同时自定义形状 drawable 显示在背景中？

我也尝试使用 ImageSpan 而不是子类 DynamicDrawableSpan 但没有成功。

原文由 Etienne Lawlor 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

感谢@chrish 提供的所有帮助。所以我是这样做的：

 final SpannableStringBuilder sb = new SpannableStringBuilder();
TextView tv = createContactTextView(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);
to_input.setText(sb);

public TextView createContactTextView(String text){
  //creating textview dynamically
  TextView tv = new TextView(this);
  tv.setText(text);
  tv.setTextSize(20);
  tv.setBackgroundResource(R.drawable.oval);
  tv.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_clear_search_api_holo_light, 0);
  return tv;
}

public 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);

}

原文由 Etienne Lawlor 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

这里有一个完整的解决方案给你

//creating textview dynamicalyy
TextView textView=new TextView(context);
textview.setText("Lauren amos");
textview.setbackgroundResource(r.color.urovalshape);
textView.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.icon_cross, 0);

BitmapDrawable dd = (BitmapDrawable) SmsUtil.getDrawableFromTExtView(textView);
edittext.settext(addSmily(dd));

//convert image to spannableString
public SpannableStringBuilder addSmily(Drawable dd) {
 dd.setBounds(0, 0, dd.getIntrinsicWidth(),dd.getIntrinsicHeight());
SpannableStringBuilder builder = new SpannableStringBuilder();
builder.append(":-)");
builder.setSpan(new ImageSpan(dd), builder.length() - ":-)".length(),builder.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

return builder;
}

  //convert view to drawable
  public static Object getDrawableFromTExtView(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.getWidth(), view.getHeight(),
            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);

}

这是完整的项目文件，如果你想使用 Spannble

原文由 Krishna Shrestha 发布，翻译遵循 CC BY-SA 3.0 许可协议