I have a problem when I try to save a file. First of all, it worked correctly when I try it on an older Eclipse, but I have to use new Eclipse so I export the project from the older Eclipse and import it on the new. Now it doesn't save and give me this excepction:
java.io.FileNotFoundException: /storage/sdcard/MyApp/questions.txt: open failed: EACCES (Permission denied)
I put the code I use to save (this code works on the older eclipse, in the new gives me the exception):
public void saveDates(boolean mainScreen)
{
String extr = Environment.getExternalStorageDirectory().toString();
File mFolder = new File(extr + "/MyApp");
if (!mFolder.exists())
{
mFolder.mkdir();
}
String strF = mFolder.getAbsolutePath();
File mSubFolder = new File(strF /*+ "/MyApp-SubFolder"*/);
if (!mSubFolder.exists())
{
mSubFolder.mkdir();
}
//Nombre del fichero
String s = "questions.txt";
BufferedWriter out;
try
{
FileWriter fileWriter = new FileWriter(mSubFolder.getAbsolutePath() + "/" + s, false);
out = new BufferedWriter(fileWriter);
out.write(indexAnswer + ";");
out.write("\r\n");
out.write(finished + ";");
out.write("\r\n");
out.write(directricesGenerales + ";");
out.write("\r\n");
out.write(politicaAmbiental + ";");
out.write("\r\n");
out.write(planificacion + ";");
out.write("\r\n");
out.write(implementacion + ";");
out.write("\r\n");
out.write(verificacion + ";");
out.write("\r\n");
out.write(revision + ";");
out.write("\r\n");
out.write(definicionProyecto + ";");
out.write("\r\n");
out.write(analisisAmbiental + ";");
out.write("\r\n");
out.write(desarrollo + ";");
out.write("\r\n");
out.write(disenyoDetalle + ";");
out.write("\r\n");
out.write(planAccion + ";");
out.write("\r\n");
out.write(evaluacionContinua + ";");
out.write("\r\n");
out.close();
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
Toast.makeText(getApplicationContext(), "Datos guardados.", Toast.LENGTH_LONG).show();
if(mainScreen)
{
// Cerrar la ventana de test y volver a la de inicio
Intent intent = new Intent();
intent.setClass(questions.this, MainActivity.class);
startActivity(intent);
finish();
}
}
And my manifest file:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.XXX"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="22" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.ecotoolin.principal"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation|screenSize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.ecotoolin.questions"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation|screenSize">
</activity>
<activity
android:name="com.example.ecotoolin.Chart"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation|screenSize">
</activity>
<activity
android:name="com.example.ecotoolin.MainActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation|screenSize">
</activity>
<activity
android:name="com.example.ecotoolin.reload"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation|screenSize">
</activity>
<activity
android:name="com.example.ecotoolin.sendMail"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation|screenSize">
</activity>
</application>
<uses-permission
android:name="android.permission.INTERNET">
</uses-permission>
<uses-permission
android:name="android.permission.ACCESS_NETWORK_STATE" >
</uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</manifest>
And an image of my emulator details:
Can anyone help me? Iwant to save the file like I do it in the older version, I don't know why doesn't work.
First, you need this permission in manifest to read files:
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
Second, does your file actually exist. If not then you first need to create the file before writing data to it.
How to create a file: How to create a file in Android?
Sample code to create a file:
// use "File.separator" instead of "/"
File file = new File(Environment.getExternalStorageDirectory() + File.separator + "test.txt");
//create the file
file.createNewFile();
//text you want to write to your file
String text = "your_text";
//check if file exists
if(file.exists()){
OutputStream fo = new FileOutputStream(file);
//write the data
fo.write(text);
//close to avoid memory leaks
fo.close();
//give a log message that the file was created with "text"
System.out.println("file created: "+file);
}
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