I can't create File.createTempFile.

[gionna]

Everything was a google class, but it doesn't work. Even ctrl+s ctrl+v did.

private File createImageFile() {
        // Create an image file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "Selfie_" + timeStamp + "_";
        File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
    File image = null;
    try {
        image = File.createTempFile(
                imageFileName,       /*prefix*/
                ".jpg",             /*suffix*/
                storageDir          /*directory*/
        );
    } catch (IOException e) {
        e.printStackTrace();
    }
    // Save a file: path for use with ACTION_VIEW Intents
    test = storageDir.toString() + imageFileName ;
    if(image == null)
        mCurrentPhotoPath = "null";
    else
        mCurrentPhotoPath = "file:" + image.getAbsolutePath();
    return image;
}

mCurrentPhotoPath = null

tets = /storage/sdcard0/PicturesSelfie_20151130_173814_

How so?

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.my.android.selfie" >

&lt;application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme" &gt;
    &lt;activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:theme="@style/AppTheme.NoActionBar" &gt;
        &lt;intent-filter&gt;
            &lt;action android:name="android.intent.action.MAIN" /&gt;
            &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
        &lt;/intent-filter&gt;
        &lt;/activity&gt;
    &lt;activity
        android:name=".Camera"
        android:label="@string/camera"&gt;
        &lt;uses-feature android:name="android.hardware.camera" android:required="false" /&gt;
        &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt;
    &lt;/activity&gt;

&lt;/application&gt;

</manifest>

[jules]

It's likely that there's no permit in the manifest in his main theater. Try adding them:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.my.android.selfie" >
&lt;uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /&gt;
&lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt;

&lt;application
....
&lt;/application&gt;

</manifest>