一般对话框
//一般对话框 public void bt_1(View v) { //不能直接实例化 //内部提供构造器 AlertDialog alertDialog = new AlertDialog.Builder(this) .setTitle("确认对话框") .setMessage("确定删除？") .setPositiveButton("确认", new DialogInterface.OnClickListener() {//正向按钮 @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(Text5Activity.this, "执行删除，which=" + which, Toast.LENGTH_SHORT).show(); } }) .setNegativeButton("取消", new DialogInterface.OnClickListener() {//负面按钮 @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(Text5Activity.this, "取消删除，which=" + which, Toast.LENGTH_SHORT).show(); } }) .setNeutralButton("中立", new DialogInterface.OnClickListener() {//中立按钮 @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(Text5Activity.this, "普通按钮,+which=" + which, Toast.LENGTH_SHORT).show(); } }) .setCancelable(false) .show();//显示对话框 }
单选对话框
//单选对话框 public void bt_2(View v) { //String终态，可以让这个常量的生命周期延长到整个实例 final String[] str = {"男", "女"}; new AlertDialog.Builder(this) .setTitle("单选对话框") .setSingleChoiceItems(str, 0, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(Text5Activity.this, "which=" + which + "选中的值是" + str[which], Toast.LENGTH_SHORT).show(); //点击关闭对话框 //a.dismiss();不能在内部用 dialog.dismiss(); } }) .setCancelable(false) .show(); }
复选对话框
//复选对话框 public void bt_3(View v) { final String []str={"宝马","奔驰","奇瑞","宾利"}; final boolean[]ch={true,false,false,true}; new AlertDialog.Builder(this) .setTitle("复选对话框") .setMultiChoiceItems(str, ch, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) { //改变对应项的选中状态 ch[which]=isChecked; } }) .setPositiveButton("确认", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { int i = 0; //获取最终选择状态 for (boolean b : ch) { Toast.makeText(Text5Activity.this, str[i] + "选中状态=" + (b ? "选中" : "未选中"), Toast.LENGTH_LONG).show(); i++; } } }) .setNegativeButton("取消", null) .setCancelable(false) .show(); }