ANDROID中自定义对话框AlertDialog使用示例

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public class AlertDialogDemo extends AppCompatActivity {
  private EditText et_username,et_password;
  @Override
  protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.alertdialog);
  }
  public void login(View v){
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("登录"); 
    //通过布局填充器获login_layout
    View view = getLayoutInflater().inflate(R.layout.login_layout,null); 
    //获取两个文本编辑框（密码这里不做登陆实现，仅演示）
    final EditText et_username = (EditText) view.findViewById(R.id.et_username);
    final EditText et_password = (EditText) view.findViewById(R.id.et_password);
    builder.setView(view);//设置login_layout为对话提示框
    builder.setCancelable(false);//设置为不可取消
    //设置正面按钮，并做事件处理
    builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialogInterface, int i) {
        String name = et_username.getText().toString().trim();
        String pass = et_password.getText().toString().trim();
        Toast.makeText(AlertDialogDemo.this,name + "正在登录....",Toast.LENGTH_SHORT).show();
      }
    });
    //设置反面按钮，并做事件处理
    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialogInterface, int i) {
        Toast.makeText(AlertDialogDemo.this,"取消登录",Toast.LENGTH_SHORT).show();
      }
    });
    builder.show();//显示Dialog对话框
  }
}