問題描述

我希望在單擊按鈕后彈出一個(gè)警告對話框以顯示搜索欄，以便人們可以將值從 1 更改為 48.我制作了一個(gè)自定義 xml，它有一個(gè)搜索欄和兩個(gè)文本視圖，我希望對話框有兩個(gè)按鈕，一個(gè)只是取消對話框，另一個(gè)做更多的工作.這是我到目前為止的代碼.

I want an alert dialog box to pop up after I click a button to have a seek bar so that the person can change the value from 1-48. I've made a custom xml that has a seek bar and two text view and I would like the dialog box to have two buttons, one just cancels the dialog and the other does more work. Here is the code I have so far.

  <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
    <SeekBar android:max="48" android:layout_height="wrap_content" android:id="@+id/seekBar1" android:layout_width="fill_parent" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_marginTop="74dp"></SeekBar>
    <TextView android:text="Change Hour Range" android:layout_height="wrap_content" android:id="@+id/textView1" android:textAppearance="?android:attr/textAppearanceLarge" android:layout_width="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true"></TextView>
    <TextView android:text="Only most recent positions" android:layout_height="wrap_content" android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_below="@+id/textView1" android:layout_centerHorizontal="true" android:layout_marginTop="15dp"></TextView>

</RelativeLayout>

這是我目前看到的警報(bào)對話框

Here is the alert dialog that I have so far

new AlertDialog.Builder(ImTracking.this)
                    //is there something like setcontentview for alert dialogs?

                    .setPositiveButton("Cancel", null)
                    .setNegativeButton("OK",
                            new DialogInterface.OnClickListener() {
 // does some work here

推薦答案

是的 builder.setView(View v); 下面是如何使用它.

Yep builder.setView(View v); here is how you can use it.

    LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View layout = inflater.inflate(R.layout.yourLayoutId, (ViewGroup) findViewById(R.id.yourLayoutRoot));
    AlertDialog.Builder builder = new AlertDialog.Builder(this)
    .setView(layout);
    AlertDialog alertDialog = builder.create();
    alertDialog.show();
    SeekBar sb = (SeekBar)layout.findViewById(R.id.yourSeekBar);
    sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser){
            //Do something here with new value
        }
    });

在示例代碼中添加了progressListener.請注意，在調(diào)用 alertDialog.show() 之前，您無法獲得對 SeekBar 的引用，如果 SeekBar 未顯示 findViewById() 將返回 null.另請注意，您必須使用 layout.findViewById(); 因?yàn)?SeekBar 是layout"引用的 RelativeLayout 的子級.

Added progressListener to sample code. Do note that you cannot get a reference to your SeekBar until after you call alertDialog.show(), if the SeekBar is not being shown findViewById() will return null. Also note that you must use layout.findViewById(); because the SeekBar is a child of the RelativeLayout that 'layout' is a reference to.

這篇關(guān)于如何在警報(bào)對話框中放置搜索欄?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！