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 Android教程網 >> Android技術 >> 關於Android編程 >> 8種android 對話框(Dialog)使用方法詳解

8種android 對話框(Dialog)使用方法詳解

編輯:關於Android編程

本文匯總了android 8種對話框(Dialog)使用方法,分享給大家供大家參考,具體內容如下

1.寫在前面

Android提供了豐富的Dialog函數,本文介紹最常用的8種對話框的使用方法,包括普通(包含提示消息和按鈕)、列表、單選、多選、等待、進度條、編輯、自定義等多種形式,將在第2部分介紹。
有時,我們希望在對話框創建或關閉時完成一些特定的功能,這需要復寫Dialog的create()、show()、dismiss()等方法,將在第3部分介紹。

2.代碼示例

2.1 普通Dialog(圖1與圖2)

2個按鈕

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 設置對話框圖標
     * @setTitle 設置對話框標題
     * @setMessage 設置對話框消息提示
     * setXXX方法返回Dialog對象,因此可以鏈式設置屬性
     */
    final AlertDialog.Builder normalDialog = 
      new AlertDialog.Builder(MainActivity.this);
    normalDialog.setIcon(R.drawable.icon_dialog);
    normalDialog.setTitle("我是一個普通Dialog")
    normalDialog.setMessage("你要點擊哪一個按鈕呢?");
    normalDialog.setPositiveButton("確定", 
      new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which) {
        //...To-do
      }
    });
    normalDialog.setNegativeButton("關閉", 
      new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which) {
        //...To-do
      }
    });
    // 顯示
    normalDialog.show();
  }
}

3個按鈕

/* @setNeutralButton 設置中間的按鈕
 * 若只需一個按鈕,僅設置 setPositiveButton 即可
 */
private void showMultiBtnDialog(){
  AlertDialog.Builder normalDialog = 
    new AlertDialog.Builder(MainActivity.this);
  normalDialog.setIcon(R.drawable.icon_dialog);
  normalDialog.setTitle("我是一個普通Dialog").setMessage("你要點擊哪一個按鈕呢?");
  normalDialog.setPositiveButton("按鈕1", 
    new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      // ...To-do
    }
  });
  normalDialog.setNeutralButton("按鈕2", 
    new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      // ...To-do
    }
  });
  normalDialog.setNegativeButton("按鈕3", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      // ...To-do
    }
  });
  // 創建實例並顯示
  normalDialog.show();
}

2.2 列表Dialog(圖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("我是一個列表Dialog");
  listDialog.setItems(items, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      // which 下標從0開始
      // ...To-do
      Toast.makeText(MainActivity.this, 
        "你點擊了" + items[which], 
        Toast.LENGTH_SHORT).show();
    }
  });
  listDialog.show();
}

2.3 單選Dialog(圖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("我是一個單選Dialog");
  // 第二個參數是默認選項,此處設置為0
  singleChoiceDialog.setSingleChoiceItems(items, 0, 
    new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      yourChoice = which;
    }
  });
  singleChoiceDialog.setPositiveButton("確定", 
    new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      if (yourChoice != -1) {
        Toast.makeText(MainActivity.this, 
        "你選擇了" + items[yourChoice], 
        Toast.LENGTH_SHORT).show();
      }
    }
  });
  singleChoiceDialog.show();
}

2.4 多選Dialog(圖5)

ArrayList<Integer> yourChoices = new ArrayList<>();
private void showMultiChoiceDialog() {
  final String[] items = { "我是1","我是2","我是3","我是4" };
  // 設置默認選中的選項,全為false默認均未選中
  final boolean initChoiceSets[]={false,false,false,false};
  yourChoices.clear();
  AlertDialog.Builder multiChoiceDialog = 
    new AlertDialog.Builder(MainActivity.this);
  multiChoiceDialog.setTitle("我是一個多選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("確定", 
    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, 
        "你選中了" + str, 
        Toast.LENGTH_SHORT).show();
    }
  });
  multiChoiceDialog.show();
}

2.5 等待Dialog(圖6)

private void showWaitingDialog() {
  /* 等待Dialog具有屏蔽其他控件的交互能力
   * @setCancelable 為使屏幕不可點擊,設置為不可取消(false)
   * 下載等事件完成後,主動調用函數關閉該Dialog
   */
  ProgressDialog waitingDialog= 
    new ProgressDialog(MainActivity.this);
  waitingDialog.setTitle("我是一個等待Dialog");
  waitingDialog.setMessage("等待中...");
  waitingDialog.setIndeterminate(true);
  waitingDialog.setCancelable(false);
  waitingDialog.show();
}

2.6 進度條Dialog(圖7)

private void showProgressDialog() {
  /* @setProgress 設置初始進度
   * @setProgressStyle 設置樣式(水平進度條)
   * @setMax 設置進度最大值
   */
  final int MAX_PROGRESS = 100;
  final ProgressDialog progressDialog = 
    new ProgressDialog(MainActivity.this);
  progressDialog.setProgress(0);
  progressDialog.setTitle("我是一個進度條Dialog");
  progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
  progressDialog.setMax(MAX_PROGRESS);
  progressDialog.show();
  /* 模擬進度增加的過程
   * 新開一個線程,每個100ms,進度增加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();
        }
      }
      // 進度達到最大值後,窗口消失
      progressDialog.cancel();
    }
  }).start();
}

2.7 編輯Dialog(圖8)

private void showInputDialog() {
  /*@setView 裝入一個EditView
   */
  final EditText editText = new EditText(MainActivity.this);
  AlertDialog.Builder inputDialog = 
    new AlertDialog.Builder(MainActivity.this);
  inputDialog.setTitle("我是一個輸入Dialog").setView(editText);
  inputDialog.setPositiveButton("確定", 
    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 自定義Dialog(圖9)

<!-- res/layout/dialog_customize.xml-->
<!-- 自定義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 裝入自定義View ==> R.layout.dialog_customize
   * 由於dialog_customize.xml只放置了一個EditView,因此和圖8一樣
   * dialog_customize.xml可自定義更復雜的View
   */
  AlertDialog.Builder customizeDialog = 
    new AlertDialog.Builder(MainActivity.this);
  final View dialogView = LayoutInflater.from(MainActivity.this)
    .inflate(R.layout.dialog_customize,null);
  customizeDialog.setTitle("我是一個自定義Dialog");
  customizeDialog.setView(dialogView);
  customizeDialog.setPositiveButton("確定",
    new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      // 獲取EditView中的輸入內容
      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.復寫回調函數

/* 復寫Builder的create和show函數,可以在Dialog顯示前實現必要設置
 * 例如初始化列表、默認選項等
 * @create 第一次創建時調用
 * @show 每次顯示時調用
 */
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("我是一個列表Dialog");
  listDialog.setItems(items, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
      // ...To-do
    }
  });
  /* @setOnDismissListener Dialog銷毀時調用
   * @setOnCancelListener Dialog關閉時調用
   */
  listDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
    public void onDismiss(DialogInterface dialog) {
      Toast.makeText(getApplicationContext(),
        "Dialog被銷毀了", 
        Toast.LENGTH_SHORT).show();
    }
  });
  listDialog.show();
}

以上就是本文的全部內容,希望對大家的學習有所幫助。

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