我救了我的任务,但我不能检索使用共享preferences的所有任务? [英] I saved my tasks but i can't retrieve all the tasks using shared preferences?

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问题描述

我救更多的任务,但在获取任务由一个显示的。我需要显示所有任务。
这是我的code存储任务。

 公共静态INT I = 0;task_ok.setOnClickListener(新View.OnClickListener(){
    公共无效的onClick(视图v){        字符串prefs_name = NULL;
        共享preferences提醒= getApplicationContext()getShared preferences(prefs_name,0);
        共享preferences.Editor taskedit = remind.edit();
        taskedit.putString(TASKNAME+ I,edit_task.getText()的toString()修剪());
        taskedit.putString(taskdate+ I,edit_date.getText()的toString()修剪());
        taskedit.putString(tasktime+ I,edit_time.getText()的toString()修剪());
        taskedit.apply();        我++;        Toast.makeText(getApplicationContext(),任务中添加,Toast.LENGTH_SHORT).show();        意图ret_view =新意图(Add.this,TaskActivity.class);
        startActivity(ret_view);
    }
});

这是code用于检索。

 公共静态INT I = 0;
公共无效的onCreate(捆绑savedInstanceState)
{
    super.onCreate(savedInstanceState);
    的setContentView(R.layout.activity_view);    TextView的电视=(的TextView)findViewById(R.id.textView2);
    字符串prefs_name = NULL;
    共享preferences提醒= getApplicationContext()getShared preferences(prefs_name,0);    remind.getAll();
    字符串viewtask = remind.getString(TASKNAME+我,);
    字符串viewdate = remind.getString(taskdate+我,);
    字符串viewtime = remind.getString(tasktime+我,);
    tv.setText(新的StringBuilder()追加(viewtask).append().append(viewdate).append().append(viewtime));
    我++;


解决方案

试试这样

 字符串TASKNAME =(TASKNAME+ I);
串taskdate =(taskdate+ I);
串tasktime =(tasktime+ I);
taskedit.putString(TASKNAME,edit_task.getText()的toString()修剪());
taskedit.putString(taskdate,edit_date.getText()的toString()修剪());
taskedit.putString(tasktime,edit_time.getText()的toString()修剪());

检索

 字符串TASKNAME =(TASKNAME+ I);
    串taskdate =(taskdate+ I);
    串tasktime =(tasktime+ I);
    字符串viewtask = remind.getString(TASKNAME,);
    串viewdate = remind.getString(taskdate,);
    串viewtime = remind.getString(tasktime,);

,当你从检索每股preference数据做完全相同。
这code为我工作。希望这会帮助你,以及
干杯

I saved more tasks, but while retrieving the tasks are displayed one by one. I need to display all the tasks. This is my code to store the tasks.

public static int i=0;

task_ok.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {

        String prefs_name = null;
        SharedPreferences remind = getApplicationContext().getSharedPreferences(prefs_name,0);     
        SharedPreferences.Editor taskedit=remind.edit();   
        taskedit.putString("taskname"+i, edit_task.getText().toString().trim());
        taskedit.putString("taskdate"+i, edit_date.getText().toString().trim());
        taskedit.putString("tasktime"+i, edit_time.getText().toString().trim());
        taskedit.apply();

        i++;

        Toast.makeText(getApplicationContext(), "Task added", Toast.LENGTH_SHORT).show();

        Intent ret_view=new Intent(Add.this,TaskActivity.class);
        startActivity(ret_view);
    }
});

This is the code for retreiving..

public static int i=0;
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_view);

    TextView tv=(TextView)findViewById(R.id.textView2);
    String prefs_name = null;
    SharedPreferences remind= getApplicationContext().getSharedPreferences(prefs_name,0);

    remind.getAll();
    String viewtask=remind.getString("taskname"+i, "");
    String viewdate=remind.getString("taskdate"+i, "");
    String viewtime=remind.getString("tasktime"+i, "");    
    tv.setText(new StringBuilder().append(viewtask).append(" ").append(viewdate).append(" ").append(viewtime));
    i++;

解决方案

try it like this

String taskname = ("taskname"+i);
String taskdate = ("taskdate"+i);
String tasktime = ("tasktime"+i);
taskedit.putString(taskname, edit_task.getText().toString().trim());
taskedit.putString(taskdate, edit_date.getText().toString().trim());
taskedit.putString(tasktime, edit_time.getText().toString().trim());

Retrieving

    String taskname = ("taskname"+i);
    String taskdate = ("taskdate"+i);
    String tasktime = ("tasktime"+i);
    String viewtask=remind.getString(taskname, "");
    String viewdate=remind.getString(taskdate, "");
    String viewtime=remind.getString(tasktime, "");  

and do exactly same when you are retrieving data from sharePreference. That code works for me . Hope this will help you as well Cheers

这篇关于我救了我的任务,但我不能检索使用共享preferences的所有任务?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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