Android Databinding default variable value
I have this layout.
<data>
<import type="android.view.View" />
<variable
name="shouldBeVisible"
type="java.lang.Boolean" />
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CheckBox
android:id="@+id/checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="@={shouldBeVisible}" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE}" />
</LinearLayout>
shouldBeVisible is by default false. Is there a way to make shouldBeVisible true? I want to have LinearLayout visible in this one case.
So far I'm using binding.shouldBeVisible=true
android android-databinding asked Nov 12 '18 at 21:06
svkakasvkaka
579320
add a comment |
I have this layout.
<data>
<import type="android.view.View" />
<variable
name="shouldBeVisible"
type="java.lang.Boolean" />
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CheckBox
android:id="@+id/checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="@={shouldBeVisible}" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE}" />
</LinearLayout>
shouldBeVisible is by default false. Is there a way to make shouldBeVisible true? I want to have LinearLayout visible in this one case.
So far I'm using binding.shouldBeVisible=true
android android-databinding asked Nov 12 '18 at 21:06
svkakasvkaka
579320
add a comment |
I have this layout.
<data>
<import type="android.view.View" />
<variable
name="shouldBeVisible"
type="java.lang.Boolean" />
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CheckBox
android:id="@+id/checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="@={shouldBeVisible}" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE}" />
</LinearLayout>
shouldBeVisible is by default false. Is there a way to make shouldBeVisible true? I want to have LinearLayout visible in this one case.
So far I'm using binding.shouldBeVisible=true
android android-databinding asked Nov 12 '18 at 21:06
svkakasvkaka
579320
I have this layout.
<data>
<import type="android.view.View" />
<variable
name="shouldBeVisible"
type="java.lang.Boolean" />
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CheckBox
android:id="@+id/checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="@={shouldBeVisible}" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE}" />
</LinearLayout>
shouldBeVisible is by default false. Is there a way to make shouldBeVisible true? I want to have LinearLayout visible in this one case.
So far I'm using binding.shouldBeVisible=true
android android-databinding android android-databinding asked Nov 12 '18 at 21:06
svkakasvkaka
579320
asked Nov 12 '18 at 21:06
svkakasvkaka
579320
edited Nov 12 '18 at 21:17
svkaka
asked Nov 12 '18 at 21:06
svkakasvkaka
579320
asked Nov 12 '18 at 21:06
svkakasvkaka
579320
asked Nov 12 '18 at 21:06
svkakasvkaka
579320
579320
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
To solve that error you can use several ways:
1) You can use primitive boolean type with inverted logic (shouldBeVisible -> shouldBeHidden)
<variable name="shouldBeHidden" type="boolean" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeHidden ? View.GONE : View.VISIBLE}" />
2) Second way is to use boxed Boolean type (as you have now) and set default value in expressions
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{(shouldBeVisible ?? true) ? View.VISIBLE : View.GONE}" />
3) Third way - manually set it after inflating of binding (as you already do now)
binding.shouldBeVisible=true
4) Use default keyword in databining value
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE, default=View.GONE}" />
Choose the one best fits your needs.
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
3rd way did the trick
– svkaka
Nov 28 '18 at 11:58
Try to use 4-th approach
– ConstOrVar
Nov 28 '18 at 13:18
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
To solve that error you can use several ways:
1) You can use primitive boolean type with inverted logic (shouldBeVisible -> shouldBeHidden)
<variable name="shouldBeHidden" type="boolean" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeHidden ? View.GONE : View.VISIBLE}" />
2) Second way is to use boxed Boolean type (as you have now) and set default value in expressions
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{(shouldBeVisible ?? true) ? View.VISIBLE : View.GONE}" />
3) Third way - manually set it after inflating of binding (as you already do now)
binding.shouldBeVisible=true
4) Use default keyword in databining value
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE, default=View.GONE}" />
Choose the one best fits your needs.
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
3rd way did the trick
– svkaka
Nov 28 '18 at 11:58
Try to use 4-th approach
– ConstOrVar
Nov 28 '18 at 13:18
add a comment |
To solve that error you can use several ways:
1) You can use primitive boolean type with inverted logic (shouldBeVisible -> shouldBeHidden)
<variable name="shouldBeHidden" type="boolean" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeHidden ? View.GONE : View.VISIBLE}" />
2) Second way is to use boxed Boolean type (as you have now) and set default value in expressions
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{(shouldBeVisible ?? true) ? View.VISIBLE : View.GONE}" />
3) Third way - manually set it after inflating of binding (as you already do now)
binding.shouldBeVisible=true
4) Use default keyword in databining value
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE, default=View.GONE}" />
Choose the one best fits your needs.
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
3rd way did the trick
– svkaka
Nov 28 '18 at 11:58
Try to use 4-th approach
– ConstOrVar
Nov 28 '18 at 13:18
add a comment |
To solve that error you can use several ways:
1) You can use primitive boolean type with inverted logic (shouldBeVisible -> shouldBeHidden)
<variable name="shouldBeHidden" type="boolean" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeHidden ? View.GONE : View.VISIBLE}" />
2) Second way is to use boxed Boolean type (as you have now) and set default value in expressions
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{(shouldBeVisible ?? true) ? View.VISIBLE : View.GONE}" />
3) Third way - manually set it after inflating of binding (as you already do now)
binding.shouldBeVisible=true
4) Use default keyword in databining value
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE, default=View.GONE}" />
Choose the one best fits your needs.
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
To solve that error you can use several ways:
1) You can use primitive boolean type with inverted logic (shouldBeVisible -> shouldBeHidden)
<variable name="shouldBeHidden" type="boolean" />
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeHidden ? View.GONE : View.VISIBLE}" />
2) Second way is to use boxed Boolean type (as you have now) and set default value in expressions
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{(shouldBeVisible ?? true) ? View.VISIBLE : View.GONE}" />
3) Third way - manually set it after inflating of binding (as you already do now)
binding.shouldBeVisible=true
4) Use default keyword in databining value
<LinearLayout
android:layout_width="40dp"
android:layout_height="30dp"
android:background="#dd0"
android:visibility="@{shouldBeVisible ? View.VISIBLE : View.GONE, default=View.GONE}" />
Choose the one best fits your needs.
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
edited Nov 28 '18 at 13:18
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
answered Nov 13 '18 at 11:14
ConstOrVarConstOrVar
1,034149
1,034149
3rd way did the trick
– svkaka
Nov 28 '18 at 11:58
Try to use 4-th approach
– ConstOrVar
Nov 28 '18 at 13:18
add a comment |
3rd way did the trick
– svkaka
Nov 28 '18 at 11:58
Try to use 4-th approach
– ConstOrVar
Nov 28 '18 at 13:18
3rd way did the trick
– svkaka
Nov 28 '18 at 11:58
3rd way did the trick
– svkaka
Nov 28 '18 at 11:58
Try to use 4-th approach
– ConstOrVar
Nov 28 '18 at 13:18
Try to use 4-th approach
– ConstOrVar
Nov 28 '18 at 13:18
add a comment |
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