Question

好吧，我的应用程序会显示wifi信息（仍在进行中），并在wifi打开时设置时间选择器。问题是我不知道如何在AlarmManager方法的选择器“set”对话框内连接按钮。这是代码

package com.pkg.androidmemoryinfo;

import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.MemoryInfo;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.Toast;

import java.util.Calendar;

    public class MainActivity extends Activity implements OnClickListener {

        private Button mTimeButton;

        private Calendar mCalen;
        private int hourOfDay;
        private int minute;
        private int ampm;

        private static final int Time_PICKER_ID = 0;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            mTimeButton = (Button) findViewById(R.id.time_button);
            mCalen = Calendar.getInstance();
            hourOfDay = mCalen.get(Calendar.HOUR_OF_DAY);
            minute = mCalen.get(Calendar.MINUTE);
            ampm = mCalen.get(Calendar.AM_PM);
            mTimeButton.setOnClickListener(this);
         // Creating a memory_info  Object
            MemoryInfo memory_info = new MemoryInfo();      
            // Using Activity Manager System Service
            ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
            activityManager.getMemoryInfo(memory_info);     
            // Assign Memory Value to free_memory Variable
            long free_memory = memory_info.availMem / 1048576L;     
             // Display free Ram Memory
             TextView memoryInfoView = (TextView) findViewById(R.id.device_memory_status_txt);
             memoryInfoView.setText("Free RAM Memory :-"+ free_memory + " MB");    


        }
        public void run() {
            WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
            WifiInfo info = wifi.getConnectionInfo();
            String ssid = info.getSSID();

            TextView ssidTextView = (TextView) findViewById(R.id.wifiSSID);
            ssidTextView.setText(ssid);
        }
        @Override
        @Deprecated
        protected Dialog onCreateDialog(int id) {

            switch (id) {
                case Time_PICKER_ID:
                    return new TimePickerDialog(this, TimePickerListener,
                            hourOfDay, minute, false);
            }
            return null;
        }

        private TimePickerDialog.OnTimeSetListener TimePickerListener =
                new TimePickerDialog.OnTimeSetListener() {

                    // while dialog box is closed, below method is called.
                    public void onTimeSet(TimePicker view, int hour, int minute) {

                        mCalen.set(Calendar.HOUR_OF_DAY, hour);
                        mCalen.set(Calendar.MINUTE, minute);

                        int hour12format = mCalen.get(Calendar.HOUR);
                        hourOfDay = mCalen.get(Calendar.HOUR_OF_DAY);
                        minute = mCalen.get(Calendar.MINUTE);
                        ampm = mCalen.get(Calendar.AM_PM);
                        String ampmStr = (ampm == 0) ? "AM" : "PM";
                        // Set the Time String in Button

                        TextView dateInfoView = (TextView) findViewById(R.id.dateinfo);
                        dateInfoView.setText("L'attivazione del Wi-Fi è impostata per le ore: " + hour12format + " : " + minute + " / " + ampmStr);    

                        /// Here is the problem: Where have i to put this? ///
                        WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); 
                        wifiManager.setWifiEnabled(true);


                    }
                };

        @SuppressWarnings("deprecation")
        @Override
        public void onClick(View v) {
            showDialog(Time_PICKER_ID);
        }
    }

正如你所看到的，我不知道如何把wifi控制。我该怎么做？如何使用我的代码创建AlarmManager？如果可能，我需要一个例子。感谢

Answer 1

这是我认为你可以使用的时间选择器的一个例子。

--------主要活动-------

package com.example.chxboxtest;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListener {

private Button start_intent_button;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    start_intent_button = (Button) findViewById(R.id.start_intent_button);
    start_intent_button.setOnClickListener(this);

}

@Override
public void onClick(View v) {

    switch (v.getId()) {

    case R.id.start_intent_button: {

        Intent intent = new Intent(this,TimePickerTest.class);
        startActivity(intent);

    }
        break;
    }

}

}

-------------主要活动XML -----------------

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
 >  

<Button 
    android:id="@+id/start_intent_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Start Intent Time Picker"
    android:layout_centerInParent="true"
    />


</RelativeLayout>

------------- TimePicker类---------------

  package com.example.chxboxtest;

 import android.app.Activity;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.CheckBox;
 import android.widget.TextView;
 import android.widget.TimePicker;
 import android.widget.Toast;


 public class TimePickerTest extends Activity implements OnClickListener{

private CheckBox cBox;
private TimePicker tPicker;
private TextView showTime;
private Button done;

private String hour;
private String minute;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.time_picker_layout);

    initButtons();
}



private void initButtons() {

    tPicker = (TimePicker) findViewById(R.id.time_picker);
    showTime = (TextView) findViewById(R.id.get_time);
    done = (Button)findViewById(R.id.done);
    cBox = (CheckBox) findViewById(R.id.time_picker_checkbox);
    cBox.setOnClickListener(this);
    done.setOnClickListener(this);
}

@Override
public void onClick(View v) {

    switch (v.getId()) {

    //If check enable or disble timePicker
    case R.id.time_picker_checkbox: {

        if (((CheckBox) v).isChecked()) {
            Toast.makeText(this, "CHECKED", Toast.LENGTH_SHORT).show();
            tPicker.setEnabled(false);
        } else {
            Toast.makeText(this, "NOT CHECKED", Toast.LENGTH_SHORT).show();
            tPicker.setEnabled(true);
        }
    }
        break;

//If Done button pressed get time selected by user

    case R.id.done:{


        tPicker.clearFocus();
        // re-read the values, in my case i put them in a Time object.
        hour   = tPicker.getCurrentHour().toString();
        minute = tPicker.getCurrentMinute().toString();

        if(tPicker.getCurrentMinute().intValue() < 10){

            String setTimeText = hour+ " : " + "0" + minute;
            showTime.setText(setTimeText);
        }else{
            String setTimeText = hour+ " : " + minute;
            showTime.setText(setTimeText);
        }





    }
        break;

    default:
        break;

    }

}

  }

------------- TimerPicker XML ------------

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/timer_textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/time_picker"
    android:layout_toRightOf="@+id/time_picker_checkbox"
    android:text="Check this to Cancel Alarm" />

<CheckBox
    android:id="@+id/time_picker_checkbox"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/time_picker"
    android:layout_centerHorizontal="true" />

<TimePicker
    android:id="@+id/time_picker"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true" />

<Button
    android:id="@+id/done"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/time_picker"
    android:layout_centerHorizontal="true"
    android:gravity="center"
    android:text="Done" />

<TextView
    android:id="@+id/get_time"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:gravity="center_horizontal"
    android:text="Time"
    android:textColor="#FF0000"
    android:textSize="25sp" />

 </RelativeLayout>

------------- -----------的Manifest.xml

     **<activity
        android:name="com.example.chxboxtest.TimePickerTest"
        android:configChanges="orientation|keyboardHidden">
    </activity>**

不要忘记将TimePicker类添加为活动。 BestPracice在strings.xml中添加所有xml文本

干杯

AlarmManager，TimePicker和Wifi控件。如何？

1 个答案: