android设备imei传递到另一个类

我想传递android设备id或imei号码，但当我从一个类传递到另一个类时，应用程序崩溃。 但当我在同一类plz帮助中被呼叫时，它工作得很好，我是android新手

package com.example.deviceid;


 import android.app.Activity;
 import android.content.Context;
 import android.os.Bundle;
 import android.provider.Settings.Secure;
 import android.telephony.TelephonyManager;
 import android.widget.Toast;

public class GetId extends Activity {
String deviceId;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

}

public String AndroidId(){
    TelephonyManager telephonyManager =   (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
    String imei=telephonyManager.getDeviceId();
    return imei;
  }

}

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

这是我被称为imei号码的主要班级

  package com.example.deviceid;

  import android.app.Activity;
  import android.content.Context;
  import android.os.Bundle;

  import android.telephony.TelephonyManager;
  import android.widget.Toast;

  public class ShowDeviceInfo extends Activity {
     GetId gi;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

   setContentView(R.layout.main);
  gi = new GetId();
  String imei = gi.AndroidId();
  Toast.makeText(this, imei, Toast.LENGTH_SHORT).show();

}
}

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

XML文件

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

---

在您的第一次活动中，您尚未设置内容

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main); // missing this statement
}

您没有导航到第二个活动。在第一个活动中不调用Android（）

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

可以使用意图在活动之间传递值

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

在你的第一次活动中

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

   Intent i= new Intent(MainActivity.this,SecondActivity.class);
   i.putExtra("imeid",imei);// key value
   startActivity(i);

第二次行动

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

   Bundle extras= getIntent().getExtras();
   if(extras!=null)
   {
       String IMEI= extras.getString("imeid");// retrieve using key
   } 

编辑：

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

不确定为什么要将imei传递给另一个类。您可以在mainactivity中获取imei编号并使用相同的编号

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

请阅读活动生命周期

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

activity_main.xml

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

    <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"
    tools:context=".MainActivity" >

    <Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/textView1"
    android:layout_alignRight="@+id/textView1"
    android:layout_marginBottom="66dp"
    android:layout_marginRight="35dp"
    android:text="Button" />

    </RelativeLayout>

second.xml

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView" />

</LinearLayout>

Manifest.xml

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

      <activity
        android:name="com.example.testintent.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>
     <activity
        android:name=".SecondActivity"
        android:label="@string/app_name" >
    </activity> 

---

//我们只在getid类中实现getid mtd，所以不需要扩展活动。 //getid类

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

public class GetId{
String deviceId;
public String AndroidId(){
    TelephonyManager telephonyManager =   (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
    String imei=telephonyManager.getDeviceId();
    return imei;
  }
}

//主要活动

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

public class ShowDeviceInfo extends Activity {
     GetId gi;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

   setContentView(R.layout.main);
    gi = new GetId();
    String imei = gi.AndroidId();
   Toast.makeText(this, imei, Toast.LENGTH_SHORT).show();

}

}

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

//manifest.xml

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.deviceid.GetId"
        android:label="@string/app_name" >

    </activity>
  </application>
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 </manifest>

<activity
        android:name="com.example.deviceid.ShowDeviceInfo"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

为什么需要进行其他活动您可以在第一个活动中直接调用它。显示您的

AndroidManifest.xml

文件。。可能你还没有宣布第二项活动。。。