时间选择器 + 复选框

Question

我的应用程序中有一个TimePicker，我想在它上面添加一个CheckBox，如果它检查TimePicker 将不起作用。这是我的TimePicker：http://developer.android.com/guide/topics/ui/controls/pickers.html#TimePicker。

我该怎么做？我希望 timePicker 看起来与示例相同。

Answer 1

我会将整个项目放在这里，以供其他人在需要时使用： 简短描述：一个程序，可让您获取用户设置的时间并在您按下完成按钮后将其显示在页面底部。用于从一个活动到另一个活动的意图。

--------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>

-------------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

Answer 2

这是一个满足您所有要求的功能示例。 经过测试且 100% 正常运行 :)

把这个放到xml中：

<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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
 >  


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

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

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

这是你的java代码：

 package com.example.chxboxtest;

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

  public class MainActivity extends Activity implements OnClickListener {

private CheckBox cBox;
private TimePicker tPicker;

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

    initButtons();

}

private void initButtons() {

    tPicker = (TimePicker) findViewById(R.id.time_picker);

    cBox = (CheckBox) findViewById(R.id.time_picker_checkbox);
    cBox.setOnClickListener(this);

}

@Override
public void onClick(View v) {

    switch (v.getId()) {

    case R.id.time_picker_checkbox: {

        if (((CheckBox) v).isChecked()) {

      Toast.makeText(this, "Deactivate",Toast.LENGTH_SHORT).show();
            tPicker.setEnabled(false);
        } else {
            Toast.makeText(this, "Activate",Toast.LENGTH_SHORT).show();
            tPicker.setEnabled(true);
        }

    }

        break;

    default:
        break;

    }

}

  }

如果您想在自定义对话框中使用此示例，请告诉我。

干杯，