我有一个大约 3000 行的 xml 布局,用作问卷类型应用程序的布局。问卷的每一页都在不同的线性布局内,我使用View.GONE
或设置代码中线性布局的可见性View.VISIBLE
。通过这种方式,用户可以浏览页面而无需intents
每次都加载新的。
但是,当我在应用程序中快速导航时(只需按下一个 button
浏览屏幕),一些应该View.GONE
显示的元素会出现并重叠在VISIBLE项目上。这只发生在其中包含列表视图的线性布局中。对于所有其他页面。
我可以快速滚动浏览它们,但是View.GONE
当我导航太快时,有时会显示元素中具有列表视图的那些。我怎样才能解决这个问题 ?如果您想要代码,请告诉我...但是 xml 非常大。
TIA
编辑
这是我的 xml 代码的示例,我的 xml 中有 3000 行这样的重复...
<LinearLayout
android:id="@+id/package_normal_samplesblood"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="70dp"
android:orientation="vertical">
<TextView
android:id="@+id/textview_heading_b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="23sp"
android:layout_marginLeft="13dp"
android:layout_marginRight="10dp"
android:layout_marginTop="12dp"
android:layout_marginBottom="12dp"
android:textColor="#6f6f6f"
android:layout_gravity="left"
android:text="Blood Samples"/>
<Button
android:id="@+id/button_samples_blood"
android:text="Add Blood Samples"
android:layout_width="fill_parent"
android:layout_height="65dp"
android:textSize="20sp"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"/>
<ListView
android:id="@+id/listview_samples_blood"
android:scrollbarSize="0dp"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:orientation="vertical"
/>
</LinearLayout>
<RelativeLayout
android:orientation="horizontal"
android:background="#ffffff"
android:layout_width="fill_parent"
android:layout_height="75dp"
android:layout_marginTop="-75dp"
>
<View
android:layout_width="fill_parent"
android:layout_alignParentTop="true"
android:layout_height="1dp"
android:background="#DEDEDE"
android:layout_marginTop="2dp"/>
<ImageButton
android:id="@+id/left9"
android:background="@null"
android:scaleType="fitEnd"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:layout_width="70px"
android:layout_height="70px"
android:src="@drawable/left"/>
<TextView
android:id="@+id/textview_heading2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25sp"
android:layout_centerInParent="true"
android:layout_marginTop="10dp"
android:textColor="#6f6f6f"
android:layout_gravity="center"
android:text="RhODIS®"/>
<ImageButton
android:id="@+id/right9"
android:background="@null"
android:scaleType="fitEnd"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_marginTop="10dp"
android:layout_marginRight="10dp"
android:layout_width="70px"
android:layout_height="70px"
android:src="@drawable/right"/>
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/package_normal_sampleshair"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="70dp"
android:orientation="vertical">
<TextView
android:id="@+id/textview_heading_b2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="23sp"
android:layout_marginLeft="13dp"
android:layout_marginRight="10dp"
android:layout_marginTop="12dp"
android:layout_marginBottom="12dp"
android:textColor="#6f6f6f"
android:layout_gravity="left"
android:text="Hair Samples"/>
<Button
android:id="@+id/button_samples_hair"
android:text="Add Hair Samples"
android:layout_width="fill_parent"
android:layout_height="65dp"
android:textSize="20sp"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"/>
<ListView
android:id="@+id/listview_samples_hair"
android:scrollbarSize="0dp"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:orientation="vertical"
/>
</LinearLayout>
<RelativeLayout
android:orientation="horizontal"
android:background="#ffffff"
android:layout_width="fill_parent"
android:layout_height="75dp"
android:layout_marginTop="-75dp"
>
<View
android:layout_width="fill_parent"
android:layout_alignParentTop="true"
android:layout_height="1dp"
android:background="#DEDEDE"
android:layout_marginTop="2dp"/>
<ImageButton
android:id="@+id/left10"
android:background="@null"
android:scaleType="fitEnd"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:layout_width="70px"
android:layout_height="70px"
android:src="@drawable/left"/>
<TextView
android:id="@+id/textview_heading2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25sp"
android:layout_centerInParent="true"
android:layout_marginTop="10dp"
android:textColor="#6f6f6f"
android:layout_gravity="center"
android:text="RhODIS®"/>
<ImageButton
android:id="@+id/right10"
android:background="@null"
android:scaleType="fitEnd"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_marginTop="10dp"
android:layout_marginRight="10dp"
android:layout_width="70px"
android:layout_height="70px"
android:src="@drawable/right"/>
</RelativeLayout>
</LinearLayout>
然后这是我如何在代码中显示和隐藏线性布局的示例,这对 24 个左按钮和 24 个右按钮重复:
left24.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
package_normal_welcomescreen.setVisibility(View.GONE);
package_normal_package_details.setVisibility(View.GONE);
package_normal_openbag.setVisibility(View.GONE);
package_normal_kitnumber.setVisibility(View.GONE);
package_normal_emptybag.setVisibility(View.GONE);
package_normal_gpscoordinates.setVisibility(View.GONE);
package_normal_image_scene.setVisibility(View.GONE);
package_normal_samplesblood.setVisibility(View.GONE);
package_normal_sampleshair.setVisibility(View.GONE);
package_normal_samplestissue.setVisibility(View.GONE);
package_normal_sampleshorn.setVisibility(View.GONE);
package_normal_samplesother.setVisibility(View.GONE);
package_normal_packsamples.setVisibility(View.GONE);
package_normal_returnbag.setVisibility(View.GONE);
package_normal_sealreturnbag.setVisibility(View.GONE);
package_normal_image_sealedbag.setVisibility(View.GONE);
package_normal_scanned.setVisibility(View.GONE);
package_normal_animal_details.setVisibility(View.GONE);
package_normal_animal_horn_details.setVisibility(View.GONE);
package_normal_animal_ears.setVisibility(View.GONE);
package_normal_area_details.setVisibility(View.GONE);
package_normal_collecter_details.setVisibility(View.GONE);
package_normal_additional_information.setVisibility(View.GONE);
package_normal_owner_details.setVisibility(View.VISIBLE);
package_normal_owner_details.bringToFront();
}
});
right24.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
if(Session.signatureIsCaptured)
{
package_normal_welcomescreen.setVisibility(View.GONE);
package_normal_package_details.setVisibility(View.GONE);
package_normal_openbag.setVisibility(View.GONE);
package_normal_kitnumber.setVisibility(View.GONE);
package_normal_emptybag.setVisibility(View.GONE);
package_normal_gpscoordinates.setVisibility(View.GONE);
package_normal_image_scene.setVisibility(View.GONE);
package_normal_samplesblood.setVisibility(View.GONE);
package_normal_sampleshair.setVisibility(View.GONE);
package_normal_samplestissue.setVisibility(View.GONE);
package_normal_sampleshorn.setVisibility(View.GONE);
package_normal_samplesother.setVisibility(View.GONE);
package_normal_packsamples.setVisibility(View.GONE);
package_normal_returnbag.setVisibility(View.GONE);
package_normal_sealreturnbag.setVisibility(View.GONE);
package_normal_image_sealedbag.setVisibility(View.GONE);
package_normal_scanned.setVisibility(View.GONE);
package_normal_animal_details.setVisibility(View.GONE);
package_normal_animal_horn_details.setVisibility(View.GONE);
package_normal_animal_ears.setVisibility(View.GONE);
package_normal_area_details.setVisibility(View.GONE);
package_normal_owner_details.setVisibility(View.GONE);
package_normal_collecter_details.setVisibility(View.GONE);
package_normal_additional_information.setVisibility(View.VISIBLE);
package_normal_additional_information.bringToFront();
}
else
{
Toast.makeText(Screen_Package_Normal.this, "Authorized Signature Required", Toast.LENGTH_LONG).show();
}
}
});
我有不同类型的列表视图和适配器,内置自定义和android。我认为问题不在于适配器,因为它可以很好地显示列表视图,甚至在填充列表视图之前就出现问题......