intent到新的activity出错，

Question

本帖最后由 xiaonaihe 于 2014-03-01 23:53:05 编辑

Answer 1

测试了下发现直接用button来intent到新activity也出错，那应该是跳转后的activity的问题么？

Answer 2

// 接受广播 电池电量监听
private BroadcastReceiver batteryChangedReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())) {
int level = intent.getIntExtra("level", 0);
int scale = intent.getIntExtra("scale", 100);
batteryLevel = (level * 100 / scale) + "%";
setDeviceInfo();
}
}
};

Answer 3

第一，你看这个activity在AndroidManifest.xml里面注册没有；
第二，把报错的log贴出来看下哈

Answer 4

注册了的，后来发现是
+ "\n设备 ID:"+ tm.getDeviceId()/
+ "\n手机号:" + tm.getLine1Number()
+ "\n软件版本号:" + tm.getDeviceSoftwareVersion()虚拟机运行这个会出错。注销了这几行就没问题了。但是单独运行，直接打开这个activity，不用intent跳转到这个activity就没问题。这是为什么

Answer 5

03-04 04:53:00.447: E/AndroidRuntime(1759): FATAL EXCEPTION: main
03-04 04:53:00.447: E/AndroidRuntime(1759): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.energysavingofmobilephone/com.example.energysavingofmobilephone.SysInformation}: java.lang.SecurityException: Requires READ_PHONE_STATE: Neither user 10047 nor current process has android.permission.READ_PHONE_STATE.
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.os.Looper.loop(Looper.java:137)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.ActivityThread.main(ActivityThread.java:5041)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at java.lang.reflect.Method.invokeNative(Native Method)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at java.lang.reflect.Method.invoke(Method.java:511)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at dalvik.system.NativeStart.main(Native Method)
03-04 04:53:00.447: E/AndroidRuntime(1759): Caused by: java.lang.SecurityException: Requires READ_PHONE_STATE: Neither user 10047 nor current process has android.permission.READ_PHONE_STATE.
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.os.Parcel.readException(Parcel.java:1425)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.os.Parcel.readException(Parcel.java:1379)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at com.android.internal.telephony.IPhoneSubInfo$Stub$Proxy.getDeviceSvn(IPhoneSubInfo.java:203)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.telephony.TelephonyManager.getDeviceSoftwareVersion(TelephonyManager.java:187)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at com.example.energysavingofmobilephone.SysInformation.setDeviceInfo(SysInformation.java:153)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at com.example.energysavingofmobilephone.SysInformation.onCreate(SysInformation.java:112)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.Activity.performCreate(Activity.java:5104)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
03-04 04:53:00.447: E/AndroidRuntime(1759):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
03-04 04:53:00.447: E/AndroidRuntime(1759):  ... 11 more
03-04 04:53:44.937: I/Process(1759): Sending signal. PID: 1759 SIG: 9

Answer 6

需要添加权限吧， Requires READ_PHONE_STATE