Android是一种基于Linux的自由及开放源代码的操作系统,主要使用于移动设备,如智能手机和平板电脑,由Google公司和开放手机联盟领导及开发。尚未有统一中文名称,中国大陆地区较多人使用“安卓”或“安致”。
这篇文章主要介绍了8种android 对话框(Dialog)使用方法。感兴趣的朋友可以参考一下
1.写在前面
Android提供了丰富的Dialog函数,本文介绍最常用的8种对话框的使用方法,包括普通(包含提示消息和按钮)、列表、单选、多选、等待、进度条、编辑、自定义等多种形式,将在第2部分介绍。
有时,我们希望在对话框创建或关闭时完成一些特定的功能,这需要复写Dialog的create()、show()、dismiss()等方法,将在第3部分介绍。
2.代码示例
2.1 普通Dialog(图1与图2)
2个按钮
- public class MainActivity extends Activity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- Button buttonNormal = (Button) findViewById(R.id.button_normal);
- buttonNormal.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- showNormalDialog();
- }
- });
- }
- private void showNormalDialog(){
- /* @setIcon 设置对话框图标
- * @setTitle 设置对话框标题
- * @setMessage 设置对话框消息提示
- * setXXX方法返回Dialog对象,因此可以链式设置属性
- */
- final AlertDialog.Builder normalDialog =
- new AlertDialog.Builder(MainActivity.this);
- normalDialog.setIcon(R.drawable.icon_dialog);
- normalDialog.setTitle("我是一个普通Dialog")
- normalDialog.setMessage("你要点击哪一个按钮呢?");
- normalDialog.setPositiveButton("确定",
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- //...To-do
- }
- });
- normalDialog.setNegativeButton("关闭",
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- //...To-do
- }
- });
- // 显示
- normalDialog.show();
- }
- }
3个按钮
- /* @setNeutralButton 设置中间的按钮
- * 若只需一个按钮,仅设置 setPositiveButton 即可
- */
- private void showMultiBtnDialog(){
- AlertDialog.Builder normalDialog =
- new AlertDialog.Builder(MainActivity.this);
- normalDialog.setIcon(R.drawable.icon_dialog);
- normalDialog.setTitle("我是一个普通Dialog").setMessage("你要点击哪一个按钮呢?");
- normalDialog.setPositiveButton("按钮1",
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- // ...To-do
- }
- });
- normalDialog.setNeutralButton("按钮2",
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- // ...To-do
- }
- });
- normalDialog.setNegativeButton("按钮3", new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- // ...To-do
- }
- });
- // 创建实例并显示
- normalDialog.show();
- }
2.2 列表Dialog(图3)
- private void showListDialog() {
- final String[] items = {
- "我是1",
- "我是2",
- "我是3",
- "我是4"
- };
- AlertDialog.Builder listDialog = new AlertDialog.Builder(MainActivity.this);
- listDialog.setTitle("我是一个列表Dialog");
- listDialog.setItems(items, new DialogInterface.OnClickListener() {@Override public void onClick(DialogInterface dialog, int which) {
- // which 下标从0开始
- // ...To-do
- Toast.makeText(MainActivity.this, "你点击了" + items[which], Toast.LENGTH_SHORT).show();
- }
- });
- listDialog.show();
- }
2.3 单选Dialog(图4)
- int yourChoice;
- private void showSingleChoiceDialog(){
- final String[] items = { "我是1","我是2","我是3","我是4" };
- yourChoice = -1;
- AlertDialog.Builder singleChoiceDialog =
- new AlertDialog.Builder(MainActivity.this);
- singleChoiceDialog.setTitle("我是一个单选Dialog");
- // 第二个参数是默认选项,此处设置为0
- singleChoiceDialog.setSingleChoiceItems(items, 0,
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- yourChoice = which;
- }
- });
- singleChoiceDialog.setPositiveButton("确定",
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- if (yourChoice != -1) {
- Toast.makeText(MainActivity.this,
- "你选择了" + items[yourChoice],
- Toast.LENGTH_SHORT).show();
- }
- }
- });
- singleChoiceDialog.show();
- }
2.4 多选Dialog(图5)
- ArrayList < Integer > yourChoices = new ArrayList < >();
- private void showMultiChoiceDialog() {
- final String[] items = {
- "我是1",
- "我是2",
- "我是3",
- "我是4"
- };
- // 设置默认选中的选项,全为false默认均未选中
- final boolean initChoiceSets[] = {
- false,
- false,
- false,
- false
- };
- yourChoices.clear();
- AlertDialog.Builder multiChoiceDialog = new AlertDialog.Builder(MainActivity.this);
- multiChoiceDialog.setTitle("我是一个多选Dialog");
- multiChoiceDialog.setMultiChoiceItems(items, initChoiceSets, new DialogInterface.OnMultiChoiceClickListener() {@Override public void onClick(DialogInterface dialog, int which, boolean isChecked) {
- if (isChecked) {
- yourChoices.add(which);
- } else {
- yourChoices.remove(which);
- }
- }
- });
- multiChoiceDialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Override public void onClick(DialogInterface dialog, int which) {
- int size = yourChoices.size();
- String str = "";
- for (int i = 0; i < size; i++) {
- str += items[yourChoices.get(i)] + " ";
- }
- Toast.makeText(MainActivity.this, "你选中了" + str, Toast.LENGTH_SHORT).show();
- }
- });
- multiChoiceDialog.show();
- }
2.5 等待Dialog(图6)
- private void showWaitingDialog() {
- /* 等待Dialog具有屏蔽其他控件的交互能力
- * @setCancelable 为使屏幕不可点击,设置为不可取消(false)
- * 下载等事件完成后,主动调用函数关闭该Dialog
- */
- ProgressDialog waitingDialog = new ProgressDialog(MainActivity.this);
- waitingDialog.setTitle("我是一个等待Dialog");
- waitingDialog.setMessage("等待中...");
- waitingDialog.setIndeterminate(true);
- waitingDialog.setCancelable(false);
- waitingDialog.show();
- }
2.6 进度条Dialog(图7)
- private void showProgressDialog() {
- /* @setProgress 设置初始进度
- * @setProgressStyle 设置样式(水平进度条)
- * @setMax 设置进度最大值
- */
- final int MAX_PROGRESS = 100;
- final ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);
- progressDialog.setProgress(0);
- progressDialog.setTitle("我是一个进度条Dialog");
- progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
- progressDialog.setMax(MAX_PROGRESS);
- progressDialog.show();
- /* 模拟进度增加的过程
- * 新开一个线程,每个100ms,进度增加1
- */
- new Thread(new Runnable() {@Override public void run() {
- int progress = 0;
- while (progress < MAX_PROGRESS) {
- try {
- Thread.sleep(100);
- progress++;
- progressDialog.setProgress(progress);
- } catch(InterruptedException e) {
- e.printStackTrace();
- }
- }
- // 进度达到最大值后,窗口消失
- progressDialog.cancel();
- }
- }).start();
- }
2.7 编辑Dialog(图8)
- private void showInputDialog() {
- /*@setView 装入一个EditView
- */
- final EditText editText = new EditText(MainActivity.this);
- AlertDialog.Builder inputDialog =
- new AlertDialog.Builder(MainActivity.this);
- inputDialog.setTitle("我是一个输入Dialog").setView(editText);
- inputDialog.setPositiveButton("确定",
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- Toast.makeText(MainActivity.this,
- editText.getText().toString(),
- Toast.LENGTH_SHORT).show();
- }
- }).show();
- }
2.8 自定义Dialog(图9)
- <!-- res/layout/dialog_customize.xml-->
- <!-- 自定义View -->
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"
- android:layout_width="match_parent"
- android:layout_height="match_parent">
- <EditText
- android:id="@+id/edit_text"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- />
- </LinearLayout>
- private void showCustomizeDialog() {
- /* @setView 装入自定义View ==> R.layout.dialog_customize
- * 由于dialog_customize.xml只放置了一个EditView,因此和图8一样
- * dialog_customize.xml可自定义更复杂的View
- */
- AlertDialog.Builder customizeDialog =
- new AlertDialog.Builder(MainActivity.this);
- final View dialogView = LayoutInflater.from(MainActivity.this)
- .inflate(R.layout.dialog_customize,null);
- customizeDialog.setTitle("我是一个自定义Dialog");
- customizeDialog.setView(dialogView);
- customizeDialog.setPositiveButton("确定",
- new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- // 获取EditView中的输入内容
- EditText edit_text =
- (EditText) dialogView.findViewById(R.id.edit_text);
- Toast.makeText(MainActivity.this,
- edit_text.getText().toString(),
- Toast.LENGTH_SHORT).show();
- }
- });
- customizeDialog.show();
- }
3.复写回调函数
- /* 复写Builder的create和show函数,可以在Dialog显示前实现必要设置
- * 例如初始化列表、默认选项等
- * @create 第一次创建时调用
- * @show 每次显示时调用
- */
- private void showListDialog() {
- final String[] items = {
- "我是1",
- "我是2",
- "我是3",
- "我是4"
- };
- AlertDialog.Builder listDialog = new AlertDialog.Builder(MainActivity.this) {
- @Override public AlertDialog create() {
- items[0] = "我是No.1";
- return super.create();
- }
- @Override public AlertDialog show() {
- items[1] = "我是No.2";
- return super.show();
- }
- };
- listDialog.setTitle("我是一个列表Dialog");
- listDialog.setItems(items, new DialogInterface.OnClickListener() {@Override public void onClick(DialogInterface dialog, int which) {
- // ...To-do
- }
- });
- /* @setOnDismissListener Dialog销毁时调用
- * @setOnCancelListener Dialog关闭时调用
- */
- listDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
- public void onDismiss(DialogInterface dialog) {
- Toast.makeText(getApplicationContext(), "Dialog被销毁了", Toast.LENGTH_SHORT).show();
- }
- });
- listDialog.show();
- }
来源: http://www.phperz.com/article/17/0915/348806.html