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我在從相對視圖中刪除視圖時遇到問題。下面的代碼以編程方式添加電話字段，然後在下面添加開關。當添加字段時，這一切都很好，但是我無法找到輕鬆刪除它們的方法，即有三個字段，我想刪除下面的第二個或第三個字段，而不是將它們錨定到的視圖。如何刪除相對對齊的視圖並保持其他視圖不變？
代碼：
private int lastCreatedView;
private int tokensIteration;
private int addButtonId, switch1Id, switch2Id;
private ArrayList<Integer> editTextsIds = new ArrayList<>();
private Contact contact;
private void setPhoneField(String number){
EditText editText = new EditText(new ContextThemeWrapper(this, R.style.ContactDetailsEditText));
editText.setId(View.generateViewId());
editText.setText(number);
editText.setHint(R.string.contact_details_activity_hint_phone_number);
editText.setTextColor(getResources().getColor(android.R.color.white));
editText.setEms(10);
editText.setInputType(InputType.TYPE_CLASS_PHONE);
editText.setImeOptions(tokenizer != null && tokenizer.hasMoreTokens()
? EditorInfo.IME_ACTION_NEXT : EditorInfo.IME_ACTION_DONE);
LinearLayout.LayoutParams editTextParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
editText.setLayoutParams(editTextParams);
editTextsIds.add(editText.getId());
TextInputLayout til = new TextInputLayout(new ContextThemeWrapper(this, R.style.ContactDetailsEditText));
til.setId(View.generateViewId());
RelativeLayout.LayoutParams textInputLayoutParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
int viewToAttach = lastCreatedView == 0 ? R.id.input_layout_company : lastCreatedView;
textInputLayoutParams.addRule(RelativeLayout.BELOW, viewToAttach);
textInputLayoutParams.addRule(RelativeLayout.END_OF, R.id.contact_photo);
til.setLayoutParams(textInputLayoutParams);
til.setTag(editTextsIds.size());
lastCreatedView = til.getId();
ImageView phoneButton = new ImageView(this);
phoneButton.setImageResource(R.drawable.ic_phone_black_48dp);
phoneButton.setPadding(5,5,5,5);
phoneButton.setScaleType(ImageView.ScaleType.FIT_END);
phoneButton.setColorFilter(Color.argb(255, 255, 255, 255));
RelativeLayout.LayoutParams phoneButtonParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
phoneButtonParams.addRule(RelativeLayout.START_OF, til.getId());
phoneButtonParams.addRule(RelativeLayout.ALIGN_TOP, til.getId());
phoneButtonParams.addRule(RelativeLayout.ALIGN_BOTTOM, til.getId());
phoneButton.setLayoutParams(phoneButtonParams);
phoneButton.setTag(editTextsIds.size());
phoneButton.setOnClickListener(view -> {
Intent call = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + number));
startActivity(call);
});
til.addView(editText);
contactContainer.addView(til);
contactContainer.addView(phoneButton);
ImageView removeNumber = new ImageView(this);
removeNumber.setId(View.generateViewId());
removeNumber.setVisibility(tokensIteration > 0 ? View.VISIBLE : View.GONE);
removeNumber.setImageResource(R.drawable.minus);
RelativeLayout.LayoutParams removeNumberParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
removeNumberParams.addRule(RelativeLayout.END_OF, til.getId());
removeNumberParams.addRule(RelativeLayout.ALIGN_TOP, til.getId());
removeNumberParams.addRule(RelativeLayout.ALIGN_BOTTOM, til.getId());
removeNumber.setLayoutParams(removeNumberParams);
removeNumber.setTag(editTextsIds.size());
removeNumber.setOnClickListener(view -> {
for(View v : getViewsByTag(contactContainer, view.getTag()))
contactContainer.removeView(v);
});
if(tokensIteration > 0) contactContainer.removeView(findViewById(addButtonId));
ImageView addNumber = new ImageView(this);
addNumber.setId(View.generateViewId());
addNumber.setImageResource(R.drawable.plus);
addNumber.setPadding(tokensIteration > 0 ? 5 : 0, 0, 0, 0);
RelativeLayout.LayoutParams addNumberParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
addNumberParams.addRule(RelativeLayout.END_OF, removeNumber.getId());
addNumberParams.addRule(RelativeLayout.ALIGN_TOP, removeNumber.getId());
addNumberParams.addRule(RelativeLayout.ALIGN_BOTTOM, removeNumber.getId());
addNumber.setLayoutParams(addNumberParams);
addNumber.setTag(editTextsIds.size());
addNumber.setOnClickListener(view -> {
//Toast.makeText(this, "Function not available", Toast.LENGTH_SHORT).show();
setPhoneField("");
setSwitches();
}
);
addButtonId = addNumber.getId();
contactContainer.addView(removeNumber);
contactContainer.addView(addNumber);
setSwitches();
}
void setSwitches(){
RelativeLayout.LayoutParams recordCallsParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
recordCallsParams.addRule(RelativeLayout.BELOW, lastCreatedView);
recordCallsParams.addRule(RelativeLayout.ALIGN_START, lastCreatedView);
recordCallsParams.addRule(RelativeLayout.ALIGN_END, lastCreatedView);
if(switch1Id != 0 && switch2Id != 0){
contactContainer.updateViewLayout(findViewById(switch1Id), recordCallsParams);
return;
}
Switch recordCalls = new Switch(this);
recordCalls.setText(R.string.contact_details_activity_record_calls);
recordCalls.setTextColor(getResources().getColor(R.color.white));
recordCalls.setSwitchPadding(5);
recordCalls.setId(View.generateViewId());
recordCalls.setLayoutParams(recordCallsParams);
recordCalls.setChecked(contact != null && contact.getIsRecordCalls());
switch1Id = recordCalls.getId();
Switch switchPrivate = new Switch(this);
switchPrivate.setText(R.string.contact_details_activity_private_contact);
switchPrivate.setTextColor(getResources().getColor(R.color.white));
switchPrivate.setSwitchPadding(5);
switchPrivate.setId(View.generateViewId());
RelativeLayout.LayoutParams switchPrivateParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
switchPrivateParams.addRule(RelativeLayout.BELOW, recordCalls.getId());
switchPrivateParams.addRule(RelativeLayout.ALIGN_START, recordCalls.getId());
switchPrivateParams.addRule(RelativeLayout.ALIGN_END, recordCalls.getId());
switchPrivate.setLayoutParams(switchPrivateParams);
switchPrivate.setChecked(contact != null && contact.getIsPrivateContact());
switch2Id = switchPrivate.getId();
contactContainer.addView(recordCalls);
contactContainer.addView(switchPrivate);
}
private static ArrayList<View> getViewsByTag(ViewGroup root, Object tag){
ArrayList<View> views = new ArrayList<>();
final int childCount = root.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = root.getChildAt(i);
if (child instanceof ViewGroup) {
views.addAll(getViewsByTag((ViewGroup) child, tag));
}
final Object tagObj = child.getTag();
if (tagObj != null && tagObj.equals(tag)) {
views.add(child);
}
}
return views;
我同意下面的donfuxx的回覆，但如果不是選項爲你也許你可以組織在一個列表視圖中的字段。這樣它可以更加動態。 –
請您詳細說明一下嗎？你的意思是整個'phoneField'作爲放入列表中的對象/視圖？ –
您可以在ListView中使用包含edittext的佈局來創建佈局。因此，ListView的每一行都將是一個EditText。無論何時需要添加/刪除字段，都可以更新ListView。 –