IllegalStateException當調用警報的意圖

Question

我試圖用Intent設置警報，但是當我嘗試打開Intent時它與IllegalStateException異常。

這裏打開意圖代碼單擊按鈕時：

public void guardarClick(View view) { 
     Intent i = new Intent(AlarmClock.ACTION_SET_ALARM); 
     i.putExtra(AlarmClock.EXTRA_MESSAGE, descriptionAlarm.getText().toString()); 
     i.putExtra(AlarmClock.EXTRA_HOUR, datePicker.getHour()); 
     i.putExtra(AlarmClock.EXTRA_MINUTES, datePicker.getMinute()); 
     startActivityForResult(i, 1); 
} 

這裏的錯誤：

04-12 20:01:19.288 4559-4559/edu.lasalle.pprog2.ac3_E/AndroidRuntime: FATAL EXCEPTION: main 
                         Process: edu.lasalle.pp2, PID: 4559 
                         java.lang.IllegalStateException: Could not execute method for android:onClick 
                          at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293) 
                          at android.view.View.performClick(View.java:5637) 
                          at android.view.View$PerformClick.run(View.java:22429) 
                          at android.os.Handler.handleCallback(Handler.java:751) 
                          at android.os.Handler.dispatchMessage(Handler.java:95) 
                          at android.os.Looper.loop(Looper.java:154) 
                          at android.app.ActivityThread.main(ActivityThread.java:6119) 
                          at java.lang.reflect.Method.invoke(Native Method) 
                          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
                          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 
                         Caused by: java.lang.reflect.InvocationTargetException 
                          at java.lang.reflect.Method.invoke(Native Method) 
                          at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
                          at android.view.View.performClick(View.java:5637)  
                          at android.view.View$PerformClick.run(View.java:22429)  
                          at android.os.Handler.handleCallback(Handler.java:751)  
                          at android.os.Handler.dispatchMessage(Handler.java:95)  
                          at android.os.Looper.loop(Looper.java:154)  
                          at android.app.ActivityThread.main(ActivityThread.java:6119)  
                          at java.lang.reflect.Method.invoke(Native Method)  
                          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)  
                          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)  
                         Caused by: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.SET_ALARM cmp=com.android.deskclock/.HandleApiCalls (has extras) } from ProcessRecord{723e06e 4559:edu.lasalle.pprog2.ac3/u0a81} (pid=4559, uid=10081) requires com.android.alarm.permission.SET_ALARM 
                          at android.os.Parcel.readException(Parcel.java:1684) 
                          at android.os.Parcel.readException(Parcel.java:1637) 
                          at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:3101) 
                          at android.app.Instrumentation.execStartActivity(Instrumentation.java:1518) 
                          at android.app.Activity.startActivityForResult(Activity.java:4225) 
                          at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:50) 
                          at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:79) 
                          at android.app.Activity.startActivityForResult(Activity.java:4183) 
                          at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:859) 
                          at edu.lasalle.pprog2.ac3.AlarmActivity.guardarClick(AlarmActivity.java:59) 
                          at java.lang.reflect.Method.invoke(Native Method)  
                          at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)  
                          at android.view.View.performClick(View.java:5637)  
                          at android.view.View$PerformClick.run(View.java:22429)  
                          at android.os.Handler.handleCallback(Handler.java:751)  
                          at android.os.Handler.dispatchMessage(Handler.java:95)  
                          at android.os.Looper.loop(Looper.java:154)  
                          at android.app.ActivityThread.main(ActivityThread.java:6119)  
                          at java.lang.reflect.Method.invoke(Native Method) 

我在做什麼錯？

Answer 1

1. 您應該將權限com.android.alarm.permission.SET_ALARM添加到您的AndroidManifest.xml文件中。

   <uses-permission android:name="com.android.alarm.permission.SET_ALARM"/> 
   

2. 使用startActivity(i)而不是startActivityForResult(i, 1)。

   Intent i = new Intent(AlarmClock.ACTION_SET_ALARM); 
   i.putExtra(AlarmClock.EXTRA_MESSAGE, descriptionAlarm.getText().toString()); 
   i.putExtra(AlarmClock.EXTRA_HOUR, datePicker.getHour()); 
   i.putExtra(AlarmClock.EXTRA_MINUTES, datePicker.getMinute()); 
   startActivity(i);