从我的
previous帖子继续,我能够为MultiAutoCompleteTextView设置多个元素,但是我无法用自定义背景和关闭按钮包装那些项目,就像链接图片一样.
我能够用单个元素做同样的事情,但是对于多个元素,运气不好.
这是我试过的.
// 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,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,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);
}
任何帮助是极大的赞赏.
编辑：
如果我做
mMultiAutoCompleteTextView.setText(mMultiAutoCompleteTextView.getText().toString()+","+sb);
我收到了多个文本,但它们没有自定义背景.
没有得到我错的地方.
编辑：
多个元素的示例看起来像这样
解决方法
试试这个：
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),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,v.getMeasuredWidth(),v.getMeasuredHeight());
drawable = new SpanDrawable();
drawable.setBounds(0,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;
}
}
}
在onCreate()中使用以下内容对其进行测试：
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);
