我正在开发一个应用程序,其中选定的联系人添加到EditText
并带有关闭标记图像,当我点击关闭标记图像联系人时应该删除。我已完成代码显示关闭标记图像,但我不知道如何处理这些关闭标记图像。请建议我如何。
我的代码:
for (int i = 0; i < selectedItems.size(); i++) {
String na = selectedItems.get(i);
TextView tv = createContactTextView(na);
BitmapDrawable bd = (BitmapDrawable) convertViewToDrawable(tv);
bd.setBounds(0, 0, bd.getIntrinsicWidth(),
bd.getIntrinsicHeight());
sb.append(na + ",");
sb.setSpan(new ImageSpan(bd), sb.length()
- (na.length() + 1), sb.length() - 1,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
txt.setText(sb);
private Object convertViewToDrawable(TextView 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);
}
private TextView createContactTextView(String text) {
TextView tv = new TextView(this);
tv.setText(text);
tv.setTextSize(25);
tv.setBackgroundResource(R.drawable.oval_small);
tv.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.close, 0);
return tv;
}
答案 0 :(得分:6)
ClickableSpan
就是你想要的:
for (int i = 0; i < selectedItems.size(); i++) {
String na = selectedItems.get(i);
TextView tv = createContactTextView(na);
BitmapDrawable bd = (BitmapDrawable) convertViewToDrawable(tv);
bd.setBounds(0, 0, bd.getIntrinsicWidth(),bd.getIntrinsicHeight());
sb.append(na + ",");
sb.setSpan(new ImageSpan(bd), sb.length()
- (na.length() + 1), sb.length() - 1,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
final int index = i;
sb.setSpan(new ClickableSpan() {
@Override
public void onClick(View widget) {
// here add your code
// delete your selectedItems[index]
// recreate your SpannedString and set to txt
}
}, sb.length()
- (na.length() + 1), sb.length() - 1,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
txt.setText(sb);
txt.setMovementMethod(LinkMovementMethod.getInstance()); // important
不要忘记最后一行
答案 1 :(得分:1)
您要做的事情的最佳方式是使用AOSP *“官方”芯片库。
例如,当您开始在默认短信应用中输入数字时,这将显示可能匹配的联系人列表。一旦你选择了一个联系人或号码匹配一个,那么它将变成一个“芯片”,用“x”按钮将其从接收者列表中删除。
要获得此行为,请直接从AOSP使用此库: https://android.googlesource.com/platform/frameworks/opt/chips/+/master
在这里可以找到一个简短的解释,由在谷歌工作的Android开发者倡导者Roman Nurik提供: https://plus.google.com/+RomanNurik/posts/WUd7GrfZfiZ
* AOSP代表Android开源项目