自定义Dialog，DatePickerDialog，TimePickerDialog，PopupWindow,Notification
自定义Dialog
自定义Dialog就是Dialog的整个View都是自己写的，title，message，按键等。
这里先用LayoutInflater将View实例化，然后用dialog.setContentView(dialog_view);将View导入Dialog中。
代码如下：
switch (v.getId()) {
case R.id.button1:
final Dialog dialog =new Dialog(MainActivity.this,R.style.NoDialogTitle);
LayoutInflater inflater=getLayoutInflater();
View dialog_view=inflater.inflate(R.layout.dialog_view,null);
TextView title= (TextView) dialog_view.findViewById(R.id.title);
TextView message= (TextView) dialog_view.findViewById(R.id.message);
Button cancel = (Button) dialog_view.findViewById(R.id.cancel);
Button ok = (Button) dialog_view.findViewById(R.id.ok);
title.setText("我是标题");
message.setText("我是内容");
dialog.setContentView(dialog_view);
cancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
ok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"您确认了",Toast.LENGTH_LONG).show();
dialog.dismiss();
}
});
dialog.show();
设置Diolog的大小的方法：
public static void setDialogWidthAndHeight(Context context, Dialog dialog, double widtRate, double heightRate) {
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = windowManager.getDefaultDisplay();
WindowManager.LayoutParams lp = dialog.getWindow().getAttributes();
lp.width = (int) (display.getWidth() * widtRate); //设置宽度为屏幕的多少
lp.height = (int) (display.getHeight() * heightRate);//设置高度为屏幕的多少
dialog.getWindow().setAttributes(lp);
}
在 Dialog dialog =new Dialog(MainActivity.this,R.style.NoDialogTitle);中用了style，这是用来取消默认的标题的，它在style中的代码为：
<style parent="@android:Theme.Dialog" name="NoDialogTitle">
<item name="android:windowFrame">@null</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowIsFloating">true</item>
<item name="android:windowContentOverlay">@null</item>
</style>这样结果就没有默认的标题了。
结果如下：
完整的例子：
public class MyDiolag extends BaseActivity {
private Button mButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.my);
mButton = (Button) findViewById(R.id.button);
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
final Dialog dialog =new Dialog(MyDiolag.this,R.style.NoDialogTitle);
LayoutInflater inflater=getLayoutInflater();
View dialog_view=inflater.inflate(R.layout.dialog_view, null);
Button cancel = (Button) dialog_view.findViewById(R.id.cancel);
Button ok = (Button) dialog_view.findViewById(R.id.ok);
cancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
ok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(), "您确认了", Toast.LENGTH_LONG).show();
dialog.dismiss();
}
});
dialog.setContentView(dialog_view);
//设置doilog的宽度和高度
WindowManager windowManager = (WindowManager) MyDiolag.this.getSystemService(Context.WINDOW_SERVICE);
Display display = windowManager.getDefaultDisplay();
WindowManager.LayoutParams lp = dialog.getWindow().getAttributes();
lp.width = (int) (display.getWidth() * 0.7); //设置宽度
dialog.getWindow().setAttributes(lp);
dialog.show();
}
});
}
dialog_view:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/my_diolog" android:padding="5dp" >
<TextView android:id="@+id/title" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:text="确认要退出应用吗？" android:gravity="center" android:padding="10dp" />
<View android:layout_width="match_parent" android:layout_height="0.5dp" android:background="@color/home_line"></View>
<LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_gravity="center_horizontal" >
<Button android:id="@+id/cancel" android:layout_width="0dp" android:layout_weight="1" android:layout_height="wrap_content" android:text="取消" android:background="@color/white" />
<View android:layout_width="0.5dp" android:layout_height="match_parent" android:background="@color/home_line"></View>
<Button android:id="@+id/ok" android:layout_width="0dp" android:layout_weight="1" android:layout_height="wrap_content" android:text="确认" android:background="@color/white" />
</LinearLayout>
</LinearLayout>效果：
时间选择控件
时间选择控件分两种，一种为时间选择，一种为日期选择。
一.日期选择又分为两种：DatePicker，DatePickerDialog。
DatePicker是像一般的控件一样要在XML中定义好，在Activity中引入，这种主要紧贴在屏幕中，DatePickerDialog是一种Dialog即弹窗，不需要在XML中定义，直接在Activity中建立它的对象就可以，不要忘记在最后show。
二.时间选择也分为两种：TimePicker，TimePickerDialog。两者的区别和上面的基本相同。
注意：这一类的控件其实非常简单，就是设置好初始值（一般用Calendar对象获得）和监听器，在控件的日期发生变化的时候会在监听器的方法中得到，并在这个方法中进行一系列的操作。
DatePicker的监听器为：OnDateChangedListener
DatePickerDialog的监听器为：OnDateSetListener
TimePicker的监听器为：OnTimeChangedListener
TimePickerDialog的监听器为：OnTimeSetListener
DatePicker
代码如下：
datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), new DatePicker.OnDateChangedListener() {
@Override
public void onDateChanged(DatePicker datePicker, int i, int i1, int i2) {
setTitle(""+i+"-"+i1+"-"+i2);
}
});结果如下：
DatePickerDialog
DatePickerDialog是用来显示时间选项的，可以利用Calendar获取当前的时间。
代码如下：
DatePickerDialog dialog =new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
calendar.set(year,monthOfYear,dayOfMonth);
SimpleDateFormat formatter =new SimpleDateFormat("yyyy年MM月dd日");
Toast.makeText(getApplicationContext(),formatter.format(calendar.getTime()),Toast.LENGTH_SHORT).show();
}
},calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH));
dialog.show();结果如下:
TimePicker
timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
@Override
public void onTimeChanged(TimePicker timePicker, int i, int i1) {
setTitle(i+"-"+i1);//对标题进行设置
}
});
结果如下：
TimePickerDialog
TimePickerDialog的用法与DatePickerDialog的用法基本相同。代码如下：
calendar=Calendar.getInstance();
TimePickerDialog dialog =new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
calendar.set(Calendar.HOUR,hourOfDay);
calendar.set(Calendar.MINUTE,minute);
SimpleDateFormat format=new SimpleDateFormat("HH:mm");
Toast.makeText(getApplicationContext(),format.format(calendar.getTime()),Toast.LENGTH_SHORT).show();
}
},calendar.get(Calendar.HOUR),calendar.get(Calendar.MINUTE),true);//这里的true是表示是否为24小时制
dialog.show();结果如下：
PopupWindow
PopupWindow在指定的地方显示一个显示框，显示几条内容。
利用popupWindow和ListView相结合可以完美的代替spinner
代码如下：
LayoutInflater inflater=getLayoutInflater();
View popup_view =inflater.inflate(R.layout.popup_view,null);
popupWindow =new PopupWindow(MainActivity.this);
popupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
popupWindow.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
popupWindow.setContentView(popup_view);
popupWindow.setFocusable(true);
popupWindow.setOutsideTouchable(true);//设置按别处显示框消失
popupWindow.showAsDropDown(button4);//设置显示框在的位置为在button4的下面。重写方法:
/** * 按back键这个显示框消失 * @param keyCode * @param event * @return */
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode==KeyEvent.KEYCODE_BACK){
popupWindow.dismiss();
}
return super.onKeyDown(keyCode, event);
}
写一个例子展示一下Popupwindow代替spinner：
public class TestPopupWndowin extends BaseActivity {
private EditText mEditext;
private ImageButton mButton;
private PopupWindow mPW;
String [] mStatusAdate = {"提出","审批","评估","确认","开发","测试","发布","完成","撤销"};
PopuWindowAdapter adapter;
private Boolean mflag=true;
private EditText mEditext2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_popupwindow_activity);
initView();
}
private void initView() {
mEditext = (EditText) findViewById(R.id.edit);
mButton = (ImageButton) findViewById(R.id.button);
mEditext2 = (EditText) findViewById(R.id.edit2);
mPW =new PopupWindow(TestPopupWndowin.this);
//mPW.dismiss();
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!mPW.isShowing()) {
initPopupWindow();
}else {
mPW.dismiss();
}
}
});
}
private void initPopupWindow() {
LayoutInflater inflater=getLayoutInflater();
View popup_view =inflater.inflate(R.layout.popup_window_layout, null);
ListView list = (ListView) popup_view.findViewById(R.id.list_view);
adapter = new PopuWindowAdapter(mStatusAdate,getLayoutInflater());
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
TextView textView = (TextView) view.findViewById(R.id.text);
mEditext.setText(textView.getText().toString());
mPW.dismiss();
}
});
mPW.setBackgroundDrawable(getResources().getDrawable(R.color.white));
mPW.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
mPW.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
mPW.setContentView(popup_view);
mPW.setFocusable(true);
mPW.setOutsideTouchable(true);//设置按别处显示框消失
mPW.showAsDropDown(mButton);//设置显示框在的位置为在button4的下面。
}
}
popup_window_layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@color/white" >
<ListView android:id="@+id/list_view" android:layout_width="match_parent" android:layout_height="match_parent" android:divider="@color/black" android:dividerHeight="1dp" android:background="@drawable/popup_window_backdround" android:layout_margin="1dp" ></ListView>
<TextView android:layout_width="wrap_content" android:layout_height="0dp" android:textSize="18dp" android:text="需求及总体方案处" />
</LinearLayout>注意：上面的TextView是用来提供Popuwindow的最大宽度的，由于Popupwindow中有ListView所以不能自适应内容的大小去改变popupwindow的宽度，所以这是一个不错的方法。
PopuWindowAdapter：
public class PopuWindowAdapter extends BaseAdapter {
private String mDate[];
private LayoutInflater inflater;
public PopuWindowAdapter(String[] mDate, LayoutInflater inflater) {
this.mDate = mDate;
this.inflater = inflater;
}
@Override
public int getCount() {
return mDate.length;
}
@Override
public Object getItem(int i) {
return i;
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View convertView, ViewGroup viewGroup) {
ViewHolder vh;
if(convertView==null) {
vh=new ViewHolder();
convertView = inflater.inflate(R.layout.popu_window_item, null);
vh.textView= (TextView) convertView.findViewById(R.id.text);
convertView.setTag(vh);
}else{
vh= (ViewHolder) convertView.getTag();
}
vh.textView.setText(mDate[i]);
/** * 这是CheckBox的一个点击事件，当CheckBox按键状态发生变化时这个变化的状态会直接传入 * 数据中，这样Checked的状态就可以直接从数据中获取 */
return convertView;
}
class ViewHolder{
TextView textView;
}
}
popu_window_item:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content">
<TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@color/white" android:gravity="center" android:layout_centerInParent="true" android:layout_margin="3dp" />
</RelativeLayout>
Notification
Notification是显示通知信息的，这里有两种写法，一种是以前的写法，一种是现在的写法。
以前的写法
以前的写法是直接赋值，
代码如下：
mNotificationManager= (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification =new Notification();
notification.icon= R.mipmap.caomei;
notification.tickerText="哈哈，我来了！";
notification.flags=Notification.FLAG_AUTO_CANCEL;
Intent intent =new Intent(getApplicationContext(),MainActivity.class);
PendingIntent pendingIntent =PendingIntent.getActivity(getApplicationContext(),1,intent,PendingIntent.FLAG_ONE_SHOT);
notification.setLatestEventInfo(getApplicationContext(),"我是标题","我是内容",pendingIntent);
notification.when=System.currentTimeMillis();
mNotificationManager.notify(1,notification);//1是一个通知的代号，可以是任何值但不可以相同。现在的做法：
步骤：
1）建立一个builder：Notification.Builder builder = new Notification.Builder(this);通过这个builder设置一系列的信息，例如，图标，title，内容，时间，来信息时的提示等等
2）利用 Notification notification = builder.build();建立一个Notification的实例。
3）建立NotificationManager的实例：NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);，并通过这个实例发送消息：manager.notify(1,notification);//这里的1，为这个信息对应的码值，可以随便取。
4）可以利用manger取消notification的发送。
完整代码如下:
public class MainActivity extends Activity implements View.OnClickListener {
private Button sendButton;
private Button cancelButton;
private NotificationManager manager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sendButton = (Button) findViewById(R.id.send);
cancelButton = (Button) findViewById(R.id.cancel);
sendButton.setOnClickListener(this);
cancelButton.setOnClickListener(this);
manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.send:
Intent intent = new Intent(this,MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_ONE_SHOT);
Notification.Builder builder = new Notification.Builder(this);
builder.setSmallIcon(R.mipmap.ic_launcher);//设置图标
builder.setTicker("我来了");//手机状态栏提示
builder.setWhen(System.currentTimeMillis());//设置时间
builder.setContentTitle("我是标题");//设置标题
builder.setContentText("我是内容");//设置内容
builder.setContentIntent(pendingIntent);//设置点击后的动作
builder.setDefaults(Notification.DEFAULT_ALL);//设置来信息的提示的全部
// builder.setDefaults(Notification.DEFAULT_LIGHTS);//设置提示灯
// builder.setDefaults(Notification.DEFAULT_SOUND);//设置提示声音
// builder.setDefaults(Notification.DEFAULT_VIBRATE);//设置提示震动
Notification notification = builder.build();
manager.notify(1,notification);
break;
case R.id.cancel:
manager.cancel(1);
break;
}
}
}