8种android 对话框(Dialog)使用方法详解

  本文汇总了android 8种对话框(Dialog)使用方法,分享给大家供大家参考,具体内容如下

  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 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)

  

  

  

  android:orientation="vertical"

  android:layout_width="match_parent"

  android:layout_height="match_parent">

  

  android:id="@+id/edit_text"

  android:layout_width="match_parent"

  android:layout_height="wrap_content"

  />

  

  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();

  }

  以上就是本文的全部内容,希望对大家的学习有所帮助。

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