本文介绍了将多个自定义元素设置为MultiAutoCompleteTextView：Android的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
继续我的文章后，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。
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）;
}
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 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.
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);
}
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);
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