自定义dialog

1.创建系统的dialog，因为没有settitle所以不会显示title栏

public Dialog getConfirmDialog(final Context context, String msg) {

        final Dialog deleteContactDialog = new AlertDialog.Builder(context)
                .setMessage(msg)
                .setNegativeButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                    }
                }).create();
return deleteContactDialog;
    }

2.用Dialog创建自定义的Dialog，即使不setTitle都会显示一个空的title栏
public Dialog getConfirmDialog(final Context context, String msg) {

        final Dialog deleteContactDialog = new Dialog(context);
        deleteContactDialog.setContentView(R.layout.appointmentdialog);
        deleteContactDialog.setTitle("");
        final TextView text = (TextView) deleteContactDialog
                .findViewById(R.id.textMsg);
        text.setText(msg);
        final TextView button = (TextView) deleteContactDialog
                .findViewById(R.id.ButtonOk);
        button.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                deleteContactDialog.dismiss();
            }
        });
return deleteContactDialog;
    }

3.用AlertDialog创建自定义的dialog，不会显示title栏
public Dialog getConfirmDialog(final Context context, String msg) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
        final LinearLayout layout = (LinearLayout) LayoutInflater.from(context)
                .inflate(R.layout.appointmentdialog, null);
        builder.setView(layout);
        final AlertDialog deleteContactDialog = builder.create();
        final TextView text = (TextView) layout.findViewById(R.id.textMsg);
        text.setText(msg);
        final TextView button = (TextView) layout.findViewById(R.id.ButtonOk);
        button.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                deleteContactDialog.dismiss();
            }
        });

        return deleteContactDialog;
    }
4.styles。xml
<resources>
<color
        name="color_black">#ff000000</color>
    <style
        name="BlackDialogTheme"
        parent="@android:style/Theme.Dialog">
        <item
            name="android:windowBackground">@color/color_black</item>
        <item
            name="android:windowIsFloating">false</item>
        <item
            name="android:windowNoTitle">true</item>
        <item
            name="android:colorBackground">@color/color_black</item>
        <item
            name="android:layout_width">200dp</item>
    </style>
</resources>

5.appointmentdialog.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:background="#000000"
    style="@style/BlackDialogTheme">
    <TextView
        android:id="@+id/textMsg"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="20dp"
        android:gravity="left"
        android:text="................"
        android:textColor="#FFFFFF" />

    <LinearLayout
        android:layout_width="150dp"
        android:layout_height="40dp"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="20dp"
        android:background="#FFFFFF"
        android:gravity="center_horizontal">
        <TextView
            android:id="@+id/ButtonOk"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="#343433"
            android:text="OK"
            android:textColor="#FFFFFF"
            android:gravity="center_vertical|center_horizontal"
            android:layout_margin="2dp" />
    </LinearLayout>

</LinearLayout>