Android基础篇AlertDialog自定义setView方法的控件响应方法

Posted 2023-01-19 zgljl2012

android使用AlertDialog弹出对话框时，如果需要自定义对话框界面，就需要用到setView来设置界面，此时，界面上一般都会有需响应或需记录结果的控件，这就需要查找控件了。下面就是一个在自定义对话框中查找控件并进行响应的实例：

LayoutInflater layoutInflater = LayoutInflater.from(mContext);
View newPlanDialog = layoutInflater.inflate(R.layout.new_plan_dialog, 
                        (ViewGroup)findViewById(R.id.LinearLayout_newplan));

AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this)
    .setTitle("添加新计划")
    .setIcon(R.drawable.ic_launcher)
    .setView(newPlanDialog)
;

builder.setPositiveButton("确定", new android.content.DialogInterface.OnClickListener()

    @Override
    public void onClick(DialogInterface dialog, int which) 
        // TODO Auto-generated method stub
        //Toast.makeText(getApplicationContext(), 
        start.toString()+":"+end.toString(), 2000).show();
        String content = text.getText().toString();
        Log.d("Content",content);
        Integer.toString(start.getCurrentHour())+
        ":"+Integer.toString(start.getCurrentMinute()));

        Log.d("EndTime",
        Integer.toString(end.getCurrentHour())+
        ":"+Integer.toString(end.getCurrentMinute()));
        dialog.dismiss();
    

);
builder.setNegativeButton("取消", new android.content.DialogInterface.OnClickListener()
    @Override
    public void onClick(DialogInterface dialog, int which) 
        // TODO Auto-generated method stub
        dialog.dismiss();           
                   
);
AlertDialog ad = builder.create();  //创建对话框
ad.show();  //需先显示，然后才能查找控件
start =(TimePicker)ad.findViewById(R.id.timepicker_start);
end = (TimePicker)ad.findViewById(R.id.timepicker_end);
text = (EditText)ad.findViewById(R.id.editText_content);

界面的xml文件就是两个时间控件和一个编辑框。
需注意，必须show对话框，然后才能查找控件。