相关疑难解决方法(0)

我正在尝试编写代码以从Android应用程序发送短信,但当我尝试发送短信时,它会将错误发送给我:

09-17 18:37:29.974  12847-12847/**.**.****E/AndroidRuntime? FATAL EXCEPTION: main
Process: **.**.****, PID: 12847
java.lang.SecurityException: Sending SMS message: uid 10092 does not have android.permission.SEND_SMS.
        at android.os.Parcel.readException(Parcel.java:1599)
        at android.os.Parcel.readException(Parcel.java:1552)
        at com.android.internal.telephony.ISms$Stub$Proxy.sendTextForSubscriber(ISms.java:768)
        at android.telephony.SmsManager.sendTextMessageInternal(SmsManager.java:310)
        at android.telephony.SmsManager.sendTextMessage(SmsManager.java:293)
        at **.**.****.MainActivity$3.onClick(MainActivity.java:70)
        at android.view.View.performClick(View.java:5198)
        at android.view.View$PerformClick.run(View.java:21147)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

我检查了但是我在清单中有权限,如下所示:

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

<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-feature android:name="android.hardware.telephony"
    android:required="true"/>

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

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

我为此感到疯狂:

Log.d("STATE", Environment.getExternalStorageState());
File f = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM), "work_data");
Log.d("PATH", f.getAbsolutePath());
if (!f.exists()) {
    Log.d("MAKE DIR", f.mkdirs() + "");
}

输出日志如下所示:

STATE     mounted
PATH      /mnt/sdcard/DCIM/work_data
MAKE DIR  false

我确保添加正确的权限:

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

但我不知道为什么它无法创建该文件夹.我也mkdir()一步一步地使用,但结果是一样的.请帮我.我用Google搜索了这么多,并且在这个愚蠢的事情上花了至少两天时间.谢谢你的帮助!!

编辑:

大家好!我添加<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>了<application>标签.这是我的错!但是谢谢大家的回复.

我需要在Android上保存相机中的图像.我在清单中使用了写入外部存储权限,我正在使用此代码

File dir = new File(Environment.getExternalStorageDirectory(), "Test");
if (!dir.exists() || !dir.isDirectory())
    dir.mkdirs();

String path = dir.getAbsolutePath();
Log.d(TAG, path);                     //log show the path
File file = new File(dir.getAbsolutePath() + "/Pic.jpg");
Log.d(TAG, file.getAbsolutePath());   //again path is shown here

outStream = new FileOutputStream(file);
outStream.write(bytes);
outStream.close();
Log.d(TAG, "onPictureTaken - wrote bytes: " + bytes.length);   //fail here
} catch (FileNotFoundException e) {
Log.d(TAG, "not done");                       //error is here (this exception is thrown)
} catch (IOException e) {
Log.d(TAG, "not");
} finally {  }

我也试过mkdir()而不是mkdirs()相同的结果.

知道代码中出了什么问题吗？ …