问题
I have a viewgroup like this image:
I want to not show those texts that are empty. For example, assume that I have no tips and promo then just Notes should be visible. When I test my program Notes (displayed with red background) does not expand to fill parent although its width set to match parent.
Any idea would be appreciated. Thanks.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/llNotesContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/tracking_bg_note"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/llNotes"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:padding="8dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/tracking_notes"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvNotes"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:maxLines="2"
android:ellipsize="end"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"
android:background="@color/red"/>
</LinearLayout>
<View
android:id="@+id/vVerticalSeparator"
android:layout_width="1dp"
android:layout_height="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:background="@color/tracking_separator"/>
<!-- Tips and Promos -->
<LinearLayout
android:id="@+id/llTipsPromos"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center_vertical">
<LinearLayout
android:id="@+id/llTips"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_vertical"
android:padding="8dp">
<TextView
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="@string/tracking_tips"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvTips"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"
android:singleLine="true"
android:ellipsize="end"/>
</LinearLayout>
<View
android:id="@+id/vHorizontalSeparator"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/tracking_separator"/>
<LinearLayout
android:id="@+id/llPromos"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_vertical"
android:padding="8dp">
<TextView
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="@string/tracking_promo"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvPromos"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"
android:singleLine="true"
android:ellipsize="end"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
In the code I have a method that call once I want to update UI. The method is:
private void showHideSeparators()
{
boolean notes = false;
boolean tips = false;
boolean promos = false;
if (!TextUtils.isEmpty(this.tvNotes.getText()))
{
notes = true;
}
if (!TextUtils.isEmpty(this.tvTips.getText()))
{
tips = true;
}
if (!TextUtils.isEmpty(this.tvPromos.getText()))
{
promos = true;
}
// We need to consider 8 configurations due to 3 variables
if (!notes && !tips && !promos)
{
this.llNotesContainer.setVisibility(View.GONE);
return;
}
if (!notes && !tips && promos)
{
this.llNotesToDriver.setVisibility(View.GONE);
this.llTips.setVisibility(View.GONE);
this.vVerticalSeparator.setVisibility(View.GONE);
this.vHorizontalSeparator.setVisibility(View.GONE);
return;
}
if (!notes && tips && !promos)
{
this.llNotesToDriver.setVisibility(View.GONE);
this.llPromos.setVisibility(View.GONE);
this.vVerticalSeparator.setVisibility(View.GONE);
this.vHorizontalSeparator.setVisibility(View.GONE);
return;
}
if (!notes && tips && promos)
{
this.llNotesToDriver.setVisibility(View.GONE);
this.vVerticalSeparator.setVisibility(View.GONE);
return;
}
if (notes && !tips && !promos)
{
this.llTips.setVisibility(View.GONE);
this.llPromos.setVisibility(View.GONE);
this.vVerticalSeparator.setVisibility(View.GONE);
this.vHorizontalSeparator.setVisibility(View.GONE);
return;
}
if (notes && !tips && promos)
{
this.llTips.setVisibility(View.GONE);
this.vVerticalSeparator.setVisibility(View.GONE);
return;
}
if (notes && tips && !promos)
{
this.llPromos.setVisibility(View.GONE);
this.vHorizontalSeparator.setVisibility(View.GONE);
return;
}
// this is default situation when all is true
if (notes && tips && promos)
{
return;
}
}
I even tried to invalidate my textView but nothing has changed. Result is like this when I just have notes.
回答1:
Your android:padding="8dp" is making this.
If you want to have padding just on top and bottom, use
android:paddingBottom="8dp"
android:paddingTop="8dp"
回答2:
If I understand correctly you want to remove the tips and promos field entirely when there are no tips and promos, and display the red notes section to match parent.
In which case make the LinearLayout llTipsPromos gone. This will fill the parent with the red notes section
回答3:
Try below code -
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/llNotesContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/tracking_bg_note">
<LinearLayout
android:id="@+id/llNotes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@+id/llTipsPromos"
android:layout_alignParentLeft="true"
android:orientation="vertical"
android:padding="8dp" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/tracking_notes"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvNotes"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:maxLines="2"
android:ellipsize="end"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"
android:background="@color/red"/>
</LinearLayout>
<View
android:id="@+id/vVerticalSeparator"
android:layout_toRightOf="@+id/llNotes"
android:layout_width="1dp"
android:layout_height="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:background="@color/tracking_separator"/>
Tips and Promos
<LinearLayout
android:id="@+id/llTipsPromos"
android:layout_width="wrap_content"
android:layout_alignParentRight="true"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center_vertical">
<LinearLayout
android:id="@+id/llTips"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:visibility="visible"
android:gravity="center_vertical"
android:padding="8dp">
<TextView
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="@string/tracking_tips"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvTips"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"
android:singleLine="true"
android:ellipsize="end"/>
</LinearLayout>
<View
android:id="@+id/vHorizontalSeparator"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/tracking_separator"/>
<LinearLayout
android:id="@+id/llPromos"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="visible"
android:orientation="horizontal"
android:gravity="center_vertical"
android:padding="8dp">
<TextView
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="@string/tracking_promo"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvPromos"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"
android:singleLine="true"
android:ellipsize="end"/>
</LinearLayout>
</LinearLayout>
when you want to show note view on full screen then hide your llTipsPromos LinearLayout.It will sure work for you.
回答4:
Finally I found a way to cope with the issue. This is the change. Hope helps you in case you have similar issue.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/llNotesContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/tracking_bg_note"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/llNotes"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:padding="8dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/tracking_notes"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvNotes"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"
android:background="@color/red"/>
</LinearLayout>
<View
android:id="@+id/vVerticalSeparator"
android:layout_width="1dp"
android:layout_height="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:background="@color/tracking_separator"/>
<!-- Tips and Promos -->
<LinearLayout
android:id="@+id/llTipsPromos"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center_vertical">
<LinearLayout
android:id="@+id/llTips"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_vertical"
android:padding="8dp">
<TextView
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="@string/tracking_tips"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvTips"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"/>
</LinearLayout>
<View
android:id="@+id/vHorizontalSeparator"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/tracking_separator"/>
<LinearLayout
android:id="@+id/llPromos"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_vertical"
android:padding="8dp">
<TextView
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="@string/tracking_promo"
android:textColor="@color/tracking_font_address"
android:textSize="13sp"/>
<TextView
android:id="@+id/tvPromos"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/tracking_font_note"
android:textSize="15sp"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
来源：https://stackoverflow.com/questions/29603055/android-textview-does-not-expand-to-match-parent