MKux MKux - 5 months ago 131
Android Question

FIXED Unable to find explicit activity class annoying error

I did some research one this Exception but none of these answers here helped me. So what I need to do is when I click a list item, it moves to another activity but I end up getting the same annoying Exception. It tells to look into Android Manifest file but everything is alright there!

Here is my code

Intent:

@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
String strItemTextView = mForecastAdapter.getItem(position);
Intent intent = new Intent(getActivity(), DetailActivity.class);
intent.putExtra(Intent.EXTRA_TEXT, strItemTextView);
startActivity(intent);
}


And Android Manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.android.sunshine2">

<uses-permission android:name="android.permission.INTERNET" />

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name="com.example.android.sunshine2.MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.android.sunshine2.DetailActivity"
android:label="@string/title_activity_detail"
android:parentActivityName="com.example.android.sunshine2.MainActivity"
android:theme="@style/AppTheme.NoActionBar">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.android.sunshine2.MainActivity" />
</activity>
</application>

</manifest>


UPDATE:

Here is my code for DetailActivity:

package com.example.android.sunshine2;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;

public class DetailActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.detail, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}

/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {

public PlaceholderFragment() {
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {

View rootView = inflater.inflate(R.layout.fragment_detail, container, false);
return rootView;
}
}
}


I get an exception like this:

android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.android.sunshine2/com.example.android.sunshine2.DetailActivity}; have you declared this activity in your AndroidManifest.xml?


And it points to this line of the code:

intent.putExtra(Intent.EXTRA_TEXT, strItemTextView);


UPDATE #2:

Now things are getting really weird. If I use relative path for activity name BUT leave a full path for a Parent activity name (Code snippet of manifest file):

<activity
android:name=".DetailActivity" // <!--Activity I wanna go to (relative path)-->
android:label="@string/title_activity_detail"
android:parentActivityName="com.example.android.sunshine2.MainActivity"
android:theme="@style/AppTheme.NoActionBar">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.android.sunshine2.MainActivity" /><!--Full path-->
</activity>


I get the same Exception but this time it points to this line of code:

startActivity(intent);


UPDATE #3:
Please take a look at the comment I managed to fix my problem

Answer

So I managed to fix my problem. Since I am just learning on Udacity, after 2days of no answers I decided to look into the their solution. The problem is that their tutorials are about 1 year old and since then Android Studio was updated quite a lot. When you are creating a new project with fragment on the latest version of Android studio, for a layout you get three files:

activity_main.xml
content_main.xml
fragment_main.xml

As in previous versions of Android Studio, you wold only get two files:

activity_main.xml
fragment_main.xml

So what I did was I deleted content_main.xml and vuolia. It worked!

That was really weird and I am marking this question as answered and I hope it will help for other users as well!

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