我尝试获取设备的电话号码，收到以下错误：
致命的例外：
主
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.dell.myapplication/com.example.dell.myapplication.MainActivity}: java.lang.SecurityException: Requires READ_PHONE_STATE: Neither user 10035 nor current process has android.permission.READ_PHONE_STATE.
我是android开发的新手。我查看了LogCat生成的错误，但不知道问题以及根据收到的错误在哪里找到它。
感谢您的帮助，并对此感到抱歉！
这是我的代码：
MainActivity.java
package com.example.dell.myapplication;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import java.util.List;
public class MainActivity extends ActionBarActivity {
public MainActivity() {
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TelephonyManager tm=(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
String imei = tm.getDeviceId();
String phone = tm.getLine1Number();
Toast.makeText(MainActivity.this, "my IMEI: "+imei, Toast.LENGTH_LONG).show();
Toast.makeText(MainActivity.this,"my phone: "+phone,Toast.LENGTH_LONG).show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
// if (id == R.id.action_settings) {
// return true;
// }
return super.onOptionsItemSelected(item);
}
}
activity_main.xml中
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<TextView android:text="@string/hello_world" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView2" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/textView"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="@+id/button"
android:layout_below="@+id/textView2"
android:layout_centerHorizontal="true"
android:layout_marginTop="121dp" />
</RelativeLayout>
logcat的
12-23 12:50:35.013 8789-8789/? D/dalvikvm﹕ Late-enabling CheckJNI
12-23 12:50:35.303 8789-8789/com.example.dell.myapplication I/dalvikvm﹕ Could not find method android.view.ViewGroup.onRtlPropertiesChanged, referenced from method android.support.v7.widget.Toolbar.onRtlPropertiesChanged
12-23 12:50:35.303 8789-8789/com.example.dell.myapplication W/dalvikvm﹕ VFY: unable to resolve virtual method 13332: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V
12-23 12:50:35.303 8789-8789/com.example.dell.myapplication D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0007
12-23 12:50:35.308 8789-8789/com.example.dell.myapplication I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
12-23 12:50:35.308 8789-8789/com.example.dell.myapplication W/dalvikvm﹕ VFY: unable to resolve virtual method 408: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
12-23 12:50:35.308 8789-8789/com.example.dell.myapplication D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002
12-23 12:50:35.308 8789-8789/com.example.dell.myapplication I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
12-23 12:50:35.308 8789-8789/com.example.dell.myapplication W/dalvikvm﹕ VFY: unable to resolve virtual method 430: Landroid/content/res/TypedArray;.getType (I)I
12-23 12:50:35.308 8789-8789/com.example.dell.myapplication D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002
12-23 12:50:35.443 8789-8789/com.example.dell.myapplication D/AndroidRuntime﹕ Shutting down VM
12-23 12:50:35.443 8789-8789/com.example.dell.myapplication W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x416f02a0)
12-23 12:50:35.468 8789-8789/com.example.dell.myapplication E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.dell.myapplication/com.example.dell.myapplication.MainActivity}: java.lang.SecurityException: Requires READ_PHONE_STATE: Neither user 10035 nor current process has android.permission.READ_PHONE_STATE.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
at android.app.ActivityThread.access$700(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.SecurityException: Requires READ_PHONE_STATE: Neither user 10035 nor current process has android.permission.READ_PHONE_STATE.
at android.os.Parcel.readException(Parcel.java:1425)
at android.os.Parcel.readException(Parcel.java:1379)
at com.android.internal.telephony.IPhoneSubInfo$Stub$Proxy.getDeviceId(IPhoneSubInfo.java:222)
at android.telephony.TelephonyManager.getDeviceId(TelephonyManager.java:249)
at com.example.dell.myapplication.MainActivity.onCreate(MainActivity.java:37)
at android.app.Activity.performCreate(Activity.java:5206)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
at android.app.ActivityThread.access$700(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
at dalvik.system.NativeStart.main(Native Method)
12-23 12:50:35.513 8789-8793/com.example.dell.myapplication D/dalvikvm﹕ GC_CONCURRENT freed 234K, 14% free 9604K/11143K, paused 3ms+3ms, total 49ms
12-23 12:50:48.168 8789-8789/com.example.dell.myapplication I/Process﹕ Sending signal. PID: 8789 SIG: 9
的AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dell.myapplication" >
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<application
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" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
答案 0 :(得分：2)
添加READ_PHONE_STATE权限
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<强> READ_PHONE_STATE
允许只读访问手机状态。
注意：如果同时设置了minSdkVersion和targetSdkVersion值 为了3或更低，系统会隐式授予您的应用此权限。 如果您不需要此权限，请确保您的targetSdkVersion为4 或更高。
保护等级：危险 常数值： “android.permission.READ_PHONE_STATE”
答案 1 :(得分：2)
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
在你的logCat中，系统告诉你这一行出错的原因：
Caused by: java.lang.SecurityException: Requires READ_PHONE_STATE: Neither user 10035 nor current process has android.permission.READ_PHONE_STATE.
答案 2 :(得分：1)
添加权限READ_PHONE_STATE
<uses-permission android:name="android.permission.READ_PHONE_STATE" />