View.setTag(key,object)异常：The key must be an application-specific resource id.

07-1113:43:26.184:E/AndroidRuntime(10229):FATALEXCEPTION:main

07-1113:43:26.184:E/AndroidRuntime(10229):java.lang.RuntimeException:UnabletostartactivityComponentInfo{com.txrj.sms/com.txrj.sms.activity.CreateMessageActivity}:java.lang.IllegalArgumentException:Thekeymustbeanapplication-specificresourceid.

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.ActivityThread.performLaunchActivity(ActivityThread.java:1970)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1995)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.ActivityThread.access$600(ActivityThread.java:128)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.ActivityThread$H.handleMessage(ActivityThread.java:1161)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.os.Handler.dispatchMessage(Handler.java:99)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.os.Looper.loop(Looper.java:137)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.ActivityThread.main(ActivityThread.java:4517)

07-1113:43:26.184:E/AndroidRuntime(10229):atjava.lang.reflect.Method.invokeNative(NativeMethod)

07-1113:43:26.184:E/AndroidRuntime(10229):atjava.lang.reflect.Method.invoke(Method.java:511)

07-1113:43:26.184:E/AndroidRuntime(10229):atcom.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)

07-1113:43:26.184:E/AndroidRuntime(10229):atcom.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)

07-1113:43:26.184:E/AndroidRuntime(10229):atdalvik.system.NativeStart.main(NativeMethod)

07-1113:43:26.184:E/AndroidRuntime(10229):Causedby:java.lang.IllegalArgumentException:Thekeymustbeanapplication-specificresourceid.

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.view.View.setTag(View.java:12585)

07-1113:43:26.184:E/AndroidRuntime(10229):atcom.txrj.sms.activity.CreateMessageActivity.getRecipientItem(CreateMessageActivity.java:47)

07-1113:43:26.184:E/AndroidRuntime(10229):atcom.txrj.sms.activity.CreateMessageActivity.onCreate(CreateMessageActivity.java:41)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.Activity.performCreate(Activity.java:4470)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053)

07-1113:43:26.184:E/AndroidRuntime(10229):atandroid.app.ActivityThread.performLaunchActivity(ActivityThread.java:1934)

07-1113:43:26.184:E/AndroidRuntime(10229):...11more

原因分析：

setTag是android的view类中很有用的一个方法，可以用它来给空间附加一些信息，在很多场合下都得到妙用。

setTag（Objecttag)方法比较简单，这里主要谈一谈带两个参数的setTag方法。

官方的api文档中提到：

“Thespecifiedkeyshouldbeaniddeclaredintheresourcesoftheapplicationtoensureitisunique(seetheID
resourcetype).KeysidentifiedasbelongingtotheAndroidframeworkornotassociatedwithanypackagewillcausean

IllegalArgumentException

to
bethrown.”

所以抛出IllegalArgumentException的原因就在于key不唯一，那么如何保证这种唯一性呢？定义一个final类型的int变量和硬编码一个值的方式都是行不通的。

如果只需要设置一个tag，那么直接调用setTag（Objecttag)方法就可以轻松搞定，如果一定需要使用多个tag绑定，那么需要先在res/values/ids.xml中添加

<resources>

<itemtype="id"name="tag_first"></item>

<itemtype="id"name="tag_second"></item>

</resources>

使用的时候写成

imageView.setTag(R.id.tag_first,"Hello");
imageView.setTag(R.id.tag_second,"Success");

就可以了

参考：/article/8852820.html