是否可以在kitkat +上没有文件选择器的情况下写入sd卡

Question

I want to delete files from the SD card root without a file picker.

After searching around for a couple of days,i haven't found a way to do this.But files apps ES file explorer have no problem,does anyone know why that is?

The closest thing i found would be this How to use the new SD-Card access API presented for Lollipop? but i have to use a file picker

Manifest

<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>
<uses-permission android:name="ANDROID.PERMISSION.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="ANDROID.PERMISSION.WRITE_EXTERNAL_STORAGE"/>

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



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

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

Answer 1

You must provide us some source code and tell what you tried.

Check if you can create new empty files:

    File newFile = new File("/storage/sdcard1/test");
    try {
        file.createNewFile();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

Edit after comment:
Add this in your manifest above application tag.

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