I’m looking at the raw build that is uploaded to Codecov and seeing that all those lines are uncovered.
After formatting,
26216 <class name="fr/free/nrw/commons/WelcomeActivity" sourcefilename="WelcomeActivity.java">
26217 <method name="<init>" desc="()V" line="19">
26218 <counter type="INSTRUCTION" missed="8" covered="0"/>
26219 <counter type="LINE" missed="2" covered="0"/>
26220 <counter type="COMPLEXITY" missed="1" covered="0"/>
26221 <counter type="METHOD" missed="1" covered="0"/>
26222 </method>
26223 <method name="onCreate" desc="(Landroid/os/Bundle;)V" line="36">
26224 <counter type="INSTRUCTION" missed="45" covered="0"/>
26225 <counter type="BRANCH" missed="6" covered="0"/>
26226 <counter type="LINE" missed="14" covered="0"/>
26227 <counter type="COMPLEXITY" missed="4" covered="0"/>
26228 <counter type="METHOD" missed="1" covered="0"/>
26229 </method>
26230 <method name="onDestroy" desc="()V" line="64">
26231 <counter type="INSTRUCTION" missed="15" covered="0"/>
26232 <counter type="BRANCH" missed="2" covered="0"/>
26233 <counter type="LINE" missed="5" covered="0"/>
26234 <counter type="COMPLEXITY" missed="2" covered="0"/>
26235 <counter type="METHOD" missed="1" covered="0"/>
26236 </method>
26237 <method name="startYourself" desc="(Landroid/content/Context;)V" line="77">
26238 <counter type="INSTRUCTION" missed="10" covered="0"/>
26239 <counter type="LINE" missed="3" covered="0"/>
26240 <counter type="COMPLEXITY" missed="1" covered="0"/>
26241 <counter type="METHOD" missed="1" covered="0"/>
26242 </method>
26243 <method name="onBackPressed" desc="()V" line="86">
26244 <counter type="INSTRUCTION" missed="26" covered="0"/>
26245 <counter type="BRANCH" missed="4" covered="0"/>
26246 <counter type="LINE" missed="6" covered="0"/>
26247 <counter type="COMPLEXITY" missed="3" covered="0"/>
26248 <counter type="METHOD" missed="1" covered="0"/>
26249 </method>
26250 <method name="finishTutorial" desc="()V" line="99">
26251 <counter type="INSTRUCTION" missed="8" covered="0"/>
26252 <counter type="LINE" missed="3" covered="0"/>
26253 <counter type="COMPLEXITY" missed="1" covered="0"/>
26254 <counter type="METHOD" missed="1" covered="0"/>
26255 </method>
26256 <counter type="INSTRUCTION" missed="112" covered="0"/>
26257 <counter type="BRANCH" missed="12" covered="0"/>
26258 <counter type="LINE" missed="33" covered="0"/>
26259 <counter type="COMPLEXITY" missed="12" covered="0"/>
26260 <counter type="METHOD" missed="6" covered="0"/>
26261 <counter type="CLASS" missed="1" covered="0"/>
26262 </class>
You notice that all of the lines shown on Codecov are present here and show them as covered="0". This probably means that you are uploading the wrong coverage report. I would check that Codecov is picking up the right file, or specify the coverage reports using the -f argument.