Question

我一直在玩警报对话框。我想显示一个对话框，显示listview中列表项的特定信息。就像android的文件管理器的详细对话框一样。

图片：https://dl.dropbox.com/u/20856352/detailsbox.jpg

有关此详细信息对话框的有趣之处在于，它显示的列表项与“首选项”屏幕中的“首选项”非常相似。可以点击它们，它们显示了一个非常精心布置的两行项目列表项。

我需要创建一个类似的对话框，但我不知道如何实现这一目标。我玩了一下。首选项XML不能用作alertdialog的布局。而且我无法开发出类似于上面图片的布局。需要帮助/指南如何实现这一目标。

Faraz Azhar

Answer 1

您可能不想使用自定义对话框，因为很难复制AlertDialog的外观。 AlertDialog可以使用AlertDialog.setListAdapter显示项目列表。您可以使用ListAdapter的自定义实现自定义项目列表，以显示每个项目的两行文本。附带的屏幕截图由以下代码和xml生成。

enter image description here

public class Temp extends Activity
{
    private String[] listItemsFirstRow = {"item 1", "item 2", "item 3"};
    private String[] listItemsSecondRow = {"item 1", "item 2", "item 3"};

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setAdapter(new MyAdapter(), null);
        builder.setTitle("Title");
        builder.setPositiveButton(android.R.string.ok, new OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
            }
        });

        builder.show();
    }

    class MyAdapter extends BaseAdapter
    {

        @Override
        public int getCount() 
        {
            return listItemsFirstRow.length;
        }

        @Override
        public Object getItem(int position) 
        {
            //this isn't great
            return listItemsFirstRow[position];
        }

        @Override
        public long getItemId(int position) 
        {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) 
        {
            if(convertView == null)
            {
                convertView = getLayoutInflater().inflate(R.layout.main, null);
            }

            ((TextView)convertView.findViewById(R.id.text1)).setText( listItemsFirstRow[position]);
            ((TextView)convertView.findViewById(R.id.text2)).setText( listItemsSecondRow[position]);

            return convertView;
        }

    }
}

main.xml中

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:minHeight=![enter image description here][2]"?android:attr/listPreferredItemHeight"
    android:orientation="vertical"
    android:gravity="center_vertical"
    android:paddingLeft="15dip"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <TextView
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:id="@+id/text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <TextView
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="?android:attr/textColorSecondary" 
        android:id="@+id/text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
</LinearLayout>

Answer 2

刚刚将xml文件与常规屏幕/页面相同

然后将此代码放在onCreate（）

上

AlertDialog.Builder builder;

        LayoutInflater inflater = getLayoutInflater();
        View layout = inflater.inflate(R.layout.toast_info,
                (ViewGroup) findViewById(R.id.toast_layout_root));

        builder = new AlertDialog.Builder(this);
        builder.setView(layout);
        alertDialog = builder.create();

其中r.layout.toast_info是您的xml文件和r.id.toast_layout_root是你的root xml id（例如＆＃39;＆lt;＆＃;; linearlayout android：id =＆＃34; + @ id ....＆＃34;＆＃39;＆gt; ＆＃39;）

当你想要显示它时只需写下这一行

alertDialog.show（）;

Answer 3

我的建议是将Activity用作对话框。这样，创建自定义对话框非常容易。这是一个我认为你可以建立的小例子。

**Activity**

public class CustomDialogEx extends Activity implements OnClickListener {

private Button button;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_layout);
    button = (Button) findViewById(R.id.button1);
    button.setOnClickListener(this);
}


@Override
public void onClick(View v) {  // pass your string data via this intent to the custom view
    // show the custom dialog
    Intent i = new Intent();
    // i.putExtra(<your key/value pairs here>
    i.setClass(this, DialogActivity.class);
    startActivity(i);   
}
}

****************************************************************************

**Custom Dialog**

// The Activity will serve as the Dialog

public class DialogActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.your_dialog_layout);
    Intent i = new Intent();
    Bundle b = getIntent().getExtras();
    b.getString(<your key>)
}
}

*****************************************************************************

**AndroidManifest**

<activity
    android:name="DialogActivity"
    android:configChanges="keyboardHidden|orientation"
    android:theme="@android:style/Theme.Dialog" >
</activity>

Answer 4

this may also help you

public class ShareDialog extends Dialog implements android.view.View.OnClickListener{

    Context  mcontContext;
    Button  btnok;
    Listview lstview;

    public ShareDialog(Context context) {
        super(context);     
        mcontContext= context;
                //pls replace with your dialog.xml file
        setContentView(R.layout.sharedialog);       
        bindComponent();
        addListener();      
    }
    private void bindComponent() {
        // TODO Auto-generated method stub
        lstview=(Listview) findViewById(R.id.lstdetail);
        btnok=(Button) findViewById(R.id.btnok);

             //bind here listview with your adpter
    }

    private void addListener()
    {

        btnshareviwifi.setOnClickListener(this);        
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {
        case R.id.btnok:


                  dismiss();     

            break;


        default:
            break;
        }

    }

}


and where you want to show

ShareDialog  shobje=new ShareDialog  (context);

shobje.show()

Android：如何创建Detail alertdialog

4 个答案: