Android AsyncTask用法巧用实例代码

Android AsyncTask

联系人导入

 new AsyncTask, Integer, ArrayList>() {
      @Override
      protected void onPreExecute() {
 super.onPreExecute();
 if (importingDialog != null)
   importingDialog.show();
      }

      @Override
      protected ArrayList doInBackground(ArrayList... params) {

 int importCount = 0;
 for (ContactInfo member : importListContact) {
   if (member.isCheck()) {
     importCount++;

     contactInsertHelper.insertSysContacts2Xphone(member);
     params[0].add(member);

     publishProgress(importCount);
   }
 }
 return params[0];
      }

      @Override
      protected void onProgressUpdate(Integer... values) {
 importingDialog.notifyByteProgress(count, values[0]);
      }

      @Override
      protected void onPostExecute(ArrayList contactInfos) {
 final ArrayList names = new ArrayList();
 final ArrayList numbers = new ArrayList();
 for (ContactInfo contactInfo : contactInfos) {
   for (int i = 0; i < contactInfo.getPhones().size(); i++) {
     numbers.add(contactInfo.getPhones().get(i).replaceAll(" ", ""));
     names.add(contactInfo.getName());
   }
 }

 Intent intent = new Intent("com.godinsec.importcomplete");
 intent.putStringArrayListExtra("numbers", numbers);
 intent.putStringArrayListExtra("names", names);
 importContactActivity.this.sendBroadcast(intent);


 Intent updateIntent = new Intent("com.godinsec.update.syscontacts");
 importContactActivity.this.sendBroadcast(updateIntent);

 handler.sendEmptyMessage(0);
      }
    }.execute(new ArrayList());

联系人删除

new LauncherContactDeleAsyncTask(mActivity, contactInfosDeles).execute(new ArrayList());

package com.godinsec.contacts.core;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import com.godinsec.contacts.R;
import com.godinsec.contacts.contactHelper.ContactInsertHelper;
import com.godinsec.contacts.db.ApplicationSQLManger;
import com.godinsec.contacts.dialog.importingDialog;
import com.godinsec.contacts.model.ContactInfo;
import java.util.ArrayList;

public class LauncherContactDeleAsyncTask extends AsyncTask, Integer, ArrayList> {
  private Context mContext = null;
  private ArrayList deleteListContacts;//总数
  private ContactInsertHelper contactInsertHelper;

  final ArrayList deleContactPhones = new ArrayList<>();

  private importingDialog importingDialog = null;
  int deleCount = 0;
  int deleAllCount = 0;

  public LauncherContactDeleAsyncTask(Context mContext, ArrayList contactInfos) {
    this.mContext = mContext;
    this.deleteListContacts = contactInfos;
    contactInsertHelper = new ContactInsertHelper(mContext);
  }


  @Override
  protected void onPreExecute() {
    super.onPreExecute();
    importingDialog = new importingDialog(mContext,mContext.getResources().getString(R.string.gsettings_dele_contacts));
    importingDialog.setCanceledonTouchOutside(false);

    if (importingDialog != null){
      importingDialog.show();
    }

    for (ContactInfo member : deleteListContacts) {
      if (member.isCheck()) {
 deleAllCount++;
      }
    }
  }

  @Override
  protected ArrayList doInBackground(ArrayList... params) {
    for (ContactInfo member : deleteListContacts) {
      if (member.isCheck()) {
 //删除联系人
 long contactServerFlag = ApplicationSQLManger.getInstance().getContactServerFlagByLauncherContact(mContext, member);

 params[0].add(String.valueOf(contactServerFlag));
 deleCount += contactInsertHelper.delete(mContext, member);

 //传递要删除的号码
 for (String phone : member.getPhones()) {
   if (deleContactPhones != null) {
     deleContactPhones.add(phone);
   }
 }

 publishProgress(deleCount);
      }
    }
    return params[0];
  }

  @Override
  protected void onProgressUpdate(Integer... values) {
    importingDialog.notifyByteProgress(deleAllCount, values[0]);
  }

  @Override
  protected void onPostExecute(ArrayList contactIds) {
    super.onPostExecute(contactIds);

    if (importingDialog.isShowing()) {
      importingDialog.dismiss();
    }

    Intent updateIntent = new Intent("com.godinsec.update.syscontacts");
    mContext.sendBroadcast(updateIntent);

    Intent intent = new Intent("com.godinsec.delcontact");
    intent.putStringArrayListExtra("numbers", deleContactPhones);
    mContext.sendBroadcast(intent);
  }
}

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