Android AlertDialog六种创建方式案例详解

  创建AlertDialog的步骤:

  一、setMessage:设置对话框内容为简单文本内容

  // 创建构建器

  AlertDialog.Builder builder = new AlertDialog.Builder(this);

  // 设置参数

  builder.setTitle("请做出选择").setIcon(R.drawable.ic_launcher)

  .setMessage("我美不美")

  .setPositiveButton("美", new OnClickListener() {// 积极

  @Override

  public void onClick(DialogInterface dialog,

  int which) {

  // TODO Auto-generated method stub

  Toast.makeText(MainActivity.this, "恭喜你答对了", 0)

  .show();

  }

  }).setNegativeButton("不美", new OnClickListener() {// 消极

  @Override

  public void onClick(DialogInterface dialog,

  int which) {

  // TODO Auto-generated method stub

  Toast.makeText(MainActivity.this, "一点也不老实", 0)

  .show();

  }

  }).setNeutralButton("不知道", new OnClickListener() {// 中间级

  @Override

  public void onClick(DialogInterface dialog,

  int which) {

  // TODO Auto-generated method stub

  Toast.makeText(MainActivity.this, "快睁开眼瞅瞅", 0)

  .show();

  }

  });

  builder.create().show();

  运行截图:

  二、setItem:设置文本框内容为简单列表项

  // 创建数据

  final String[] items = new String[] { "北京", "上海", "广州", "深圳" };

  // 创建对话框构建器

  AlertDialog.Builder builder = new AlertDialog.Builder(this);

  // 设置参数

  builder.setIcon(R.drawable.ic_launcher).setTitle("提示")

  .setItems(items, new OnClickListener() {

  @Override

  public void onClick(DialogInterface dialog, int which) {

  Toast.makeText(MainActivity.this, items[which],

  Toast.LENGTH_SHORT).show();

  }

  });

  builder.create().show();

  运行截图:

  三、setSingleChoiceItems()设置对话框内容为单选列表项

  // 创建数据

  final String[] items = new String[] { "北京", "上海", "广州", "深圳" };

  // 创建对话框构建器

  AlertDialog.Builder builder = new AlertDialog.Builder(this);

  // 设置参数

  builder.setIcon(R.drawable.ic_launcher).setTitle("提示")

  .setSingleChoiceItems(items, 0, new OnClickListener() {

  @Override

  public void onClick(DialogInterface dialog, int which) {

  // TODO Auto-generated method stub

  Toast.makeText(MainActivity.this, items[which],

  Toast.LENGTH_SHORT).show();

  }

  });

  builder.create().show();

  运行截图:

  四、setMultiChoiceItems()设置对话框内容为多选项列表

  // 创建数据

  final String[] items = new String[] { "北京", "上海", "广州", "深圳" };

  // 创建对话框构建器

  AlertDialog.Builder builder = new AlertDialog.Builder(this);

  builder.setIcon(R.drawable.ic_launcher)

  .setTitle("提示")

  .setMultiChoiceItems(items,

  new boolean[] { true, true, false, false, false },

  new OnMultiChoiceClickListener() {

  @Override

  public void onClick(DialogInterface dialog,

  int which, boolean isChecked) {

  // TODO Auto-generated method stub

  if (isChecked) {

  Toast.makeText(MainActivity.this,

  items[which], 0).show();

  }

  }

  });

  builder.create().show();

  运行截图:

  五、setAdapter()设置对话框内容为自定义列表项(这里是一个布局)

  // 创建数据

  final String[] items = new String[] { "北京", "上海", "广州", "深圳" };

  // 创建对话框构建器

  AlertDialog.Builder builder = new AlertDialog.Builder(this);

  builder.setTitle("提示")

  .setIcon(R.drawable.ic_launcher)

  .setAdapter(

  new ArrayAdapter(MainActivity.this,

  R.layout.item, R.id.tv, items),

  new OnClickListener() {

  @Override

  public void onClick(DialogInterface dialog,

  int which) {

  // TODO Auto-generated method stub

  Toast.makeText(MainActivity.this, items[which],

  0).show();

  }

  });

  builder.create().show();

  运行截图:

  六、setView()设置对话框为自定义View

  // 创建对话框构建器

  AlertDialog.Builder builder = new AlertDialog.Builder(this);

  // 获取布局

  View view2 = View.inflate(MainActivity.this, R.layout.login, null);

  // 获取布局中的控件

  final EditText username = (EditText) view2.findViewById(R.id.username);

  final EditText password = (EditText) view2.findViewById(R.id.password);

  final Button button = (Button) view2.findViewById(R.id.btn_login);

  // 设置参数

  builder.setTitle("Login").setIcon(R.drawable.ic_launcher)

  .setView(view2);

  // 创建对话框

  final AlertDialog alertDialog = builder.create();

  button.setOnClickListener(new View.OnClickListener() {

  @Override

  public void onClick(View v) {

  // TODO Auto-generated method stub

  String uname = username.getText().toString().trim();

  String psd = password.getText().toString().trim();

  if (uname.equals("shenhua") && psd.equals("123456")) {

  Toast.makeText(MainActivity.this, "登录成功", 0).show();

  }

  Toast.makeText(MainActivity.this, "登录失败", 0).show();

  alertDialog.dismiss();// 对话框消失

  }

  });

  alertDialog.show();

  运行截图:

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