Question

感谢任何帮助。

我在清单中有一个广播接收器，当时是android：enabled =＆＃34; true＆＃34;接收广播并启动服务。当它是android：enabled =＆＃34; false＆＃34;没有接收广播，服务也没有开始。

这是你在使用PackageManger时所期望的，当我尝试在我的偏好活动中使用它时，在android：enabled =＆＃34; true＆＃34;的情况下，服务一直被调用。或者android：enabled =＆＃34; false＆＃34;该服务永远不会被调用。在这两种情况下，如果选中复选框都无关紧要。

我认为问题在于如何构造首选项活动，因为我尝试过的真/假逻辑被搞砸了。我没有得到任何错误，这使得人们相信它是如何构建的。真的想要一些帮助解决这个问题。提前感谢您提供的任何帮助。

这是首选项XML和Preference Java。

<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android">
<CheckBoxPreference

android:key="CheckBox"

 android:id="@+id/CheckBox1" 
 android:title=" StartUp" 
 android:summary="Change The CheckBox Status here, it will be saved in 
 Preference" />
</PreferenceScreen>

以下是Java

package com.collabera.labs.sai;

import java.util.Calendar;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.ComponentName;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
mport android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.CheckBox;

public class ShowPreferences extends PreferenceActivity implements     
 OnSharedPreferenceChangeListener{
boolean CheckBox;
CheckBox cb;
PreferenceManager pm;
SharedPreferences sp;
Editor editor;
private String CHECKBOX;


/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.bootpreference);

    cb = (CheckBox) findViewById(R.id.CheckBox1);

    loadPref();}



     private void loadPref() {
    // TODO Auto-generated method stub

    SharedPreferences sp =        
    PreferenceManager.getDefaultSharedPreferences(this);  
    sp.getBoolean("CHECKBOX", false);}



     private void savePrefs(String key, boolean value) {
        SharedPreferences sp = 
        PreferenceManager.getDefaultSharedPreferences(this); 
        Editor edit = sp.edit();
        edit.putBoolean(CHECKBOX, true);
        edit.commit();
     }


         public void onClick(View v) {
        // TODO Auto-generated method stub
        savePrefs("CHECKBOX", cb.isChecked());
        if (cb.isChecked());


       }


       public void pendingIntent()   {
      // TODO Auto-generated method stub

     }

     public void onSharedPreferenceChanged(SharedPreferences  
     sharedPreferences,
        String key, boolean cbValue) {
     // TODO Auto-generated method stub

     if(cbValue){
        cb.setChecked(true);

        Intent myIntent = new Intent(getBaseContext(), 
                BroadcastServiceReceiver.class);

         PendingIntent pendingIntent 
            = PendingIntent.getBroadcast(getBaseContext(), 
                    0, myIntent, 0);

         AlarmManager alarmManager 
                = (AlarmManager)getSystemService(ALARM_SERVICE);
         Calendar calendar = Calendar.getInstance();
         calendar.setTimeInMillis(System.currentTimeMillis());
         calendar.add(Calendar.SECOND, 10);
         long interval = 60 * 1000; //
         alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, 
                 calendar.getTimeInMillis(), interval, pendingIntent);

         PackageManager pm = getPackageManager();
         ComponentName compName = 
               new ComponentName(getApplicationContext(), 
                       BroadcastServiceReceiver.class);
         pm.setComponentEnabledSetting(
               compName,
               PackageManager.COMPONENT_ENABLED_STATE_DEFAULT, 0);







         }else{
           cb.setChecked(false);

         Intent myIntent = new Intent(getBaseContext(), 
                 BroadcastServiceReceiver.class);

         PendingIntent pendingIntent 
            = PendingIntent.getBroadcast(getBaseContext(), 
                    0, myIntent, 0);

         AlarmManager alarmManager 
                = (AlarmManager)getSystemService(ALARM_SERVICE);
         Calendar calendar = Calendar.getInstance();
         calendar.setTimeInMillis(System.currentTimeMillis());

         alarmManager.cancel(pendingIntent);


         PackageManager pm = getPackageManager();
         ComponentName compName = 
               new ComponentName(getApplicationContext(), 
                       BroadcastServiceReceiver.class);
         pm.setComponentEnabledSetting(
               compName,
               PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0);}


         }

         @Override
         public void onSharedPreferenceChanged(SharedPreferences 
         sharedPreferences,
         String key) {
         // TODO Auto-generated method stub
         savePrefs("CHECKBOX", cb.isChecked());
         if (cb.isChecked());


         }

         }

Answer 1

原来我不需要Package Manager。只需要正确构建广播接收器。

在此链接中找到。

Shared preferences not setting boolean inside boot_received broadcast receiver

感谢任何有兴趣的人。

麦克

广播接收器和首选项复选框无法一起使用

1 个答案: