Question

我已经为Android应用编写了一个代码，可以输入时间并在其上生成警报。最初，我已经为输入时间添加了两个按钮，并为set alarm添加了一个按钮。现在，我想改进我的方法，即想要删除设置警报按钮和时间设置按钮以文本形式而不是TimePicker输入时间。为此，我为ListView Array Adapter编写了一个代码，这样我只能输入两次，并且输入时间可以存储在该数组Adapter中以进行报警服务。但不幸的是，不得不面对很多困难。现在我应该在代码/方法中做出哪些更改，以更好的方式改进它。 我的简单代码：

package com.task;

        import java.util.Calendar;

        import android.app.Activity;
        import android.app.AlarmManager;
        import android.app.PendingIntent;
        import android.app.TimePickerDialog;
        import android.content.Context;
        import android.content.Intent;
        import android.os.Bundle;
        import android.view.Menu;
        import android.view.MenuItem;
        import android.view.View;
        import android.view.View.OnClickListener;
        import android.widget.Button;
        import android.widget.TimePicker;
        import android.widget.Toast;

        public class MainActivity extends Activity implements OnClickListener {
            Calendar Alarm = Calendar.getInstance();
            Button  b1,b2;
            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);
                b1= (Button)findViewById(R.id.b1);
                b1.setOnClickListener(this);
                b2= (Button)findViewById(R.id.b2);
                b2.setOnClickListener(this);
                Button alrm= (Button)findViewById(R.id.alrm);
                alrm.setOnClickListener(this);
            }

            @Override
            public void onClick(View clickedView) {
                if ((clickedView.getId() == R.id.b1) ||
                        (clickedView.getId() == R.id.b2)
                        {
    TimePickerDialog t= new TimePickerDialog(this, timeSetListener, Calendar.getInstance().get(Calendar.HOUR), Calendar.getInstance().get(Calendar.MINUTE), false);
                t.show();
                }
                else if (clickedView.getId() == R.id.alrm) 
                    {
    AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
                Intent intent = new Intent(this, Recv.class);
                PendingIntent pi = PendingIntent.getBroadcast(this.getApplicationContext(), (int) System.currentTimeMillis(), intent, 0); // Unique value for every Alarm
                Alarm.set(Calendar.SECOND, 0);
                Alarm.set(Calendar.MILLISECOND, 0);
                am.set( AlarmManager.RTC_WAKEUP, Alarm.getTimeInMillis(), pi);
    }

            }

            TimePickerDialog.OnTimeSetListener timeSetListener = new  TimePickerDialog.OnTimeSetListener() {

                @Override
                public void onTimeSet(TimePicker view, int hour, int minute) {
                    Alarm.set(Calendar.HOUR, hour);
                    Alarm.set(Calendar.MINUTE, minute);
                }
            };
        }

我的ListView代码（尝试）：

public class MainActivity extends ListActivity {
    ArrayList<String> list = new ArrayList<String>();
    ArrayAdapter<String> adapter;
    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        for (int x=0; x<=2; x++) // loop for iterating array members
        {
        Button btn = (Button) findViewById(R.id.btnAdd);
        adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
        OnClickListener listener = new OnClickListener() {          
            @Override
            public void onClick(View v) {                               
                EditText edit = (EditText) findViewById(R.id.txtItem);
                list.add(edit.getText().toString());
                edit.setText("");               
                adapter.notifyDataSetChanged();
            }
        };

        btn.setOnClickListener(listener);
        setListAdapter(adapter);        
    }
        }
}

ListView数组适配器输入edittext Android

0 个答案: