Dialog学习笔记

感觉对Dialog了解很少，今天看书学习一下，顺便更新一下blog（吐槽一下，最近几天都很忙没上blog）。。

1）自定义Dialog layout

上面的Dialog界面采用了自己的layout，下面是代码：

package com.example.androiddialog;import android.os.Bundle;import android.app.Activity;import android.app.Dialog;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bt = (Button) findViewById(R.id.bt);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubfinal Dialog dialog = new Dialog(MainActivity.this);dialog.setTitle("标题");dialog.setContentView(R.layout.dialog_layout);dialog.show();Button button = (Button) dialog.findViewById(R.id.bt);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubdialog.dismiss();}});}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

下面是自定义的layout代码：

<?xml version="1.0" encoding="utf-8"?><LinearLayout 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/tv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="DIALOG" />    <Button        android:id="@+id/bt"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="取消" /></LinearLayout>

2）AlertDialog

AlertDialog是常用的Dialog实现之一，要构造AlertDialog界面，需要用到一个新的AlertDialog.Buider对象。

下面是实现界面：

下面是代码：

package com.example.androiddialog;import android.os.Bundle;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bt = (Button) findViewById(R.id.bt);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubAlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);dialog.setTitle("标题");dialog.setMessage("message");dialog.setPositiveButton("确认", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "点击了确认", 0).show();}});dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubdialog.dismiss();}});dialog.show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

点击确认和取消按钮都有相应的响应事件。

需要注意的是，点击一次按钮在响应事件之后都会关闭对话框。在上面按下返回键不会关闭对话框的，如果想要返回键关闭对话框可以使用setOnCancleListener方法附上一个OnCancelListener来响应

3）DataPickerDialog

用户用这个Dialog选择时间，构造函数中有一个onDateSet函数通知Activity日期已经被设定

下面是代码：

package com.example.androiddialog;import android.os.Bundle;import android.app.Activity;import android.app.DatePickerDialog;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.DatePicker;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bt = (Button) findViewById(R.id.bt);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubDatePickerDialog dialog = new DatePickerDialog(MainActivity.this,new DatePickerDialog.OnDateSetListener() {@Overridepublic void onDateSet(DatePicker view, int year,int monthOfYear, int dayOfMonth) {// TODO Auto-generated method stubToast.makeText(MainActivity.this,year + "年" + monthOfYear + "月"+ dayOfMonth + "日", 0).show();}// 注意：月份是从0开始的，所以要-1}, 2014, 7, 19);dialog.show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

4）TimePickerDialog

TimePickerDialog的用法和上面的差不多，只不过这个是设置时间的上面是设置日期的。

下面是代码：

package com.example.androiddialog;import android.os.Bundle;import android.app.Activity;import android.app.DatePickerDialog;import android.app.TimePickerDialog;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.DatePicker;import android.widget.TimePicker;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bt = (Button) findViewById(R.id.bt);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubTimePickerDialog dialog = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {@Overridepublic void onTimeSet(TimePicker view, int hourOfDay, int minute) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, hourOfDay+"分"+minute+"秒", 0).show();}}, 12, 12, true);dialog.setTitle("时间");dialog.show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

5）AlertDialog中的setView

前面忘记说一点了，通过setView函数可以在AlertDialog中添加View，比如EditText ,TextView等等的，这样定制性会很高，又符合Dialog简单窗口的特性。

下面是代码：

package com.example.androiddialog;import android.os.Bundle;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bt = (Button) findViewById(R.id.bt);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubnew AlertDialog.Builder(MainActivity.this).setTitle("titile").setView(new EditText(MainActivity.this)).setPositiveButton("确认", new AlertDialog.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "选择了确定", 0).show();}}).show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

6）ProgressDialog

ProgressDialog是用来显示进度条的，默认分为圆形和水平两种，下面演示水平的。

下面是代码：

package com.example.androiddialog;import android.os.Bundle;import android.app.Activity;import android.app.ProgressDialog;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bt = (Button) findViewById(R.id.bt);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubProgressDialog dialog = new ProgressDialog(MainActivity.this);dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);dialog.setTitle("title");dialog.setMessage("message");// 设置点击其他部分会不会取消Dialogdialog.setCanceledOnTouchOutside(false);// 返回键能否取消dialog.setCancelable(false);dialog.setMax(50);dialog.incrementProgressBy(20);dialog.incrementProgressBy(2);dialog.show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}