valentin/myweather_app
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Add SharedPreferences to handle global behaviour. First use is "Hiding umbrella ImageView when new city is added into the DB"

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valentin 2020-11-10 13:42:21 +01:00
parent 9afb1cb8dd
commit eb61b3fdb7
3 changed files with 79 additions and 0 deletions
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6
.idea/render.experimental.xml Normal file
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@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="RenderSettings">
<option name="showDecorations" value="true" />
</component>
</project>

20
app/src/main/java/fr/romanet/vj/apps/myweather/AddCity.java
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@ -2,6 +2,9 @@ package fr.romanet.vj.apps.myweather;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
@ -13,6 +16,10 @@ public class AddCity extends AppCompatActivity {
private EditText cityName;
// - Define shared preferences var -
SharedPreferences sharedPreferences;
@Override
protected void onCreate(Bundle savedInstanceState)
{
@ -37,8 +44,21 @@ public class AddCity extends AppCompatActivity {
cityName.setError("Please, enter a city name");
}
else
// - Load Shared Preferences (named 'prefs') -
sharedPreferences = getSharedPreferences("prefs", Context.MODE_PRIVATE);
// - Now the ImageView has to be hidden, so write it into the shared preferences -
// - Put value '0' into the preference 'umbrella_visible' of the shared preference book called 'prefs'
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putInt("umbrella_visible", 0);
editor.apply();
saveCity(newCityString);
resetForm();
}
});
}

53
app/src/main/java/fr/romanet/vj/apps/myweather/MainActivity.java
View File

@ -3,11 +3,24 @@ package fr.romanet.vj.apps.myweather;
import android.content.*;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
public class MainActivity extends AppCompatActivity {
// - Umbrella ImageView
public static ImageView imgPara;
// - Is used to store the shared preference value of umbrella visibility
public int umbrella_visible;
// - Define shared preferences var -
SharedPreferences sharedPreferences;
@Override
protected void onCreate(Bundle savedInstanceState)
{
@ -21,6 +34,46 @@ public class MainActivity extends AppCompatActivity {
openAddCityPage();
}
});
// - Assign Activity ImageView to var -
imgPara = (ImageView) findViewById(R.id.imageView);
// - Load Shared Preferences (named 'prefs') -
sharedPreferences = getSharedPreferences("prefs", Context.MODE_PRIVATE);
// - Try to retrieve 'umbrella_visible', if not set return 3 -
umbrella_visible = sharedPreferences.getInt("umbrella_visible", 3);
// - If preference not yet defined, set value to 1 (visible) -
if (umbrella_visible == 3){
// - Put value '1' into the preference 'umbrella_visible' of the shared preference book called 'prefs'
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putInt("umbrella_visible", 1);
editor.apply();
}
Log.d("DEBUG1 -> create", Integer.toString(umbrella_visible));
}
@Override
protected void onResume() {
super.onResume();
// - Load Shared Preferences (named 'prefs') -
sharedPreferences = getSharedPreferences("prefs", Context.MODE_PRIVATE);
// - Try to retrieve 'umbrella_visible', if not set return 3 -
umbrella_visible = sharedPreferences.getInt("umbrella_visible", 3);
Log.d("DEBUG1 -> resume", Integer.toString(umbrella_visible));
// - If 'umbrella_visible' is equal to '0', we have to hide the ImageView -
if(umbrella_visible == 0){
// - Hide ImageView -
imgPara.setVisibility(View.GONE);
}
}
public void openAddCityPage()