1.确定取消对话框
对话框中有2个按钮 通过调用 setPositiveButton 方法 和 setNegativeButton 方法 可以设置按钮的显示内容以及按钮的监听事件。
我们使用AlerDialog 创建对话框
- AlertDialog.Builder builder = new AlertDialog.Builder(MainDialog.this);
- builder.setIcon(R.drawable.icon);
- builder.setTitle("你确定要离开吗?");
- builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- //这里添加点击确定后的逻辑
- showDialog("你选择了确定");
- }
- });
- builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- //这里添加点击确定后的逻辑
- showDialog("你选择了取消");
- }
- });
- builder.create().show();
- private void showDialog(String str) {
- new AlertDialog.Builder(MainDialog.this)
- .setMessage(str)
- .show();
- }
- AlertDialog.Builder builder = new AlertDialog.Builder(MainDialog.this);
- builder.setIcon(R.drawable.icon);
- builder.setTitle("投票");
- builder.setMessage("您认为什么样的内容能吸引您?");
- builder.setPositiveButton("有趣味的", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- showDialog("你选择了有趣味的");
- }
- });
- builder.setNeutralButton("有思想的", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- showDialog("你选择了有思想的");
- }
- });
- builder.setNegativeButton("主题强的", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- showDialog("你选择了主题强的");
- }
- });
- builder.create().show();
这个数组用于列表选择
- final String[] mItems = {"item0","item1","itme2","item3","itme4","item5","item6"};
- AlertDialog.Builder builder = new AlertDialog.Builder(MainDialog.this);
- builder.setTitle("列表选择框");
- builder.setItems(mItems, new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int which) {
- //点击后弹出窗口选择了第几项
- showDialog("你选择的id为" + which + " , " + mItems[which]);
- }
- });
- builder.create().show();
mSingleChoice 用于记录单选中的ID
- int mSingleChoiceID = -1;
- AlertDialog.Builder builder = new AlertDialog.Builder(MainDialog.this);
- mSingleChoiceID = -1;
- builder.setIcon(R.drawable.icon);
- builder.setTitle("单项选择");
- builder.setSingleChoiceItems(mItems, 0, new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- mSingleChoiceID = whichButton;
- showDialog("你选择的id为" + whichButton + " , " + mItems[whichButton]);
- }
- });
- builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- if(mSingleChoiceID > 0) {
- showDialog("你选择的是" + mSingleChoiceID);
- }
- }
- });
- builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- }
- });
- builder.create().show();
点击进度条框按钮后 开启一个线程计算读取的进度 假设读取结束为 100
Progress在小于100的时候一直在线程中做循环++ 只到读取结束后,停止线程。
- mProgressDialog = new ProgressDialog(MainDialog.this);
- mProgressDialog.setIcon(R.drawable.icon);
- mProgressDialog.setTitle("进度条窗口");
- mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
- mProgressDialog.setMax(MAX_PROGRESS);
- mProgressDialog.setButton("确定", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- //这里添加点击后的逻辑
- }
- });
- mProgressDialog.setButton2("取消", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- //这里添加点击后的逻辑
- }
- });
- mProgressDialog.show();
- new Thread(this).start();
- public void run() {
- int Progress = 0;
- while(Progress < MAX_PROGRESS) {
- try {
- Thread.sleep(100);
- Progress++;
- mProgressDialog.incrementProgressBy(1);
- } catch (InterruptedException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }
- }
MultiChoiceID 用于记录多选选中的id号 存在ArrayList中
选中后 add 进ArrayList
取消选中后 remove 出ArrayList。
- ArrayList <Integer>MultiChoiceID = new ArrayList <Integer>();
- AlertDialog.Builder builder = new AlertDialog.Builder(MainDialog.this);
- MultiChoiceID.clear();
- builder.setIcon(R.drawable.icon);
- builder.setTitle("多项选择");
- builder.setMultiChoiceItems(mItems,
- new boolean[]{false, false, false, false, false, false, false},
- new DialogInterface.OnMultiChoiceClickListener() {
- public void onClick(DialogInterface dialog, int whichButton,
- boolean isChecked) {
- if(isChecked) {
- MultiChoiceID.add(whichButton);
- showDialog("你选择的id为" + whichButton + " , " + mItems[whichButton]);
- }else {
- MultiChoiceID.remove(whichButton);
- }
- }
- });
- builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- String str = "";
- int size = MultiChoiceID.size();
- for (int i = 0 ;i < size; i++) {
- str+= mItems[MultiChoiceID.get(i)] + ", ";
- }
- showDialog("你选择的是" + str);
- }
- });
- builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- }
- });
- builder.create().show();
讲到自定义布局我就得多说一说了,为什么要多说一说呢?
其实自定义布局在Android的开发中非常重要 因为它能让开发者做出自己五彩缤纷的Activity 而不用去使用系统枯燥的界面。
自定义dialog有什么好处?
比如我们在开发过长当中 要通过介绍系统发送的一个广播弹出一个dialog . 但是dialog必需是基于activity才能呈现出来 如果没有activity 的话 程序就会崩溃。所以我们可以写一个自定义的 dialog 把它定义成一个activity
这样我们收到一条打开dialog的广播后 直接启动这个 activity 程序正常运行~~
这就是自定义dialog的好处。
注明:下面这个例子只是写了自定义dialog 没有把它单独的写在一个activity中 如果须要的话 可以自己改一下。
- AlertDialog.Builder builder = new AlertDialog.Builder(MainDialog.this);
- LayoutInflater factory = LayoutInflater.from(this);
- final View textEntryView = factory.inflate(R.layout.test, null);
- builder.setIcon(R.drawable.icon);
- builder.setTitle("自定义输入框");
- builder.setView(textEntryView);
- builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- EditText userName = (EditText) textEntryView.findViewById(R.id.etUserName);
- EditText password = (EditText) textEntryView.findViewById(R.id.etPassWord);
- showDialog("姓名 :" + userName.getText().toString() + "密码:" + password.getText().toString() );
- }
- });
- builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface dialog, int whichButton) {
- }
- });
- builder.create().show();
- <span style="color:#000000;"><?xml version="1.0" encoding="utf-8"?>
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_height="wrap_content"
- android:layout_width="wrap_content"
- android:orientation="horizontal"
- android:id="@+id/dialog">
- <LinearLayout
- android:layout_height="wrap_content"
- android:layout_width="wrap_content"
- android:orientation="horizontal"
- android:id="@+id/dialogname">
- <TextView android:layout_height="wrap_content"
- android:layout_width="wrap_content"
- android:id="@+id/tvUserName"
- android:text="姓名:" />
- <EditText android:layout_height="wrap_content"
- android:layout_width="wrap_content"
- android:id="@+id/etUserName"
- android:minWidth="200dip"/>
- </LinearLayout>
- <LinearLayout
- android:layout_height="wrap_content"
- android:layout_width="wrap_content"
- android:orientation="horizontal"
- android:id="@+id/dialognum"
- android:layout_below="@+id/dialogname"
- >
- <TextView android:layout_height="wrap_content"
- android:layout_width="wrap_content"
- android:id="@+id/tvPassWord"
- android:text="密码:" />
- <EditText android:layout_height="wrap_content"
- android:layout_width="wrap_content"
- android:id="@+id/etPassWord"
- android:minWidth="200dip"/>
- </LinearLayout>
- </RelativeLayout></span>
显示一个正在转圈的进度条loading
- mProgressDialog = new ProgressDialog(this);
- mProgressDialog.setTitle("读取ing");
- mProgressDialog.setMessage("正在读取中请稍候");
- mProgressDialog.setIndeterminate(true);
- mProgressDialog.setCancelable(true);
- mProgressDialog.show();
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