Android 自定义dialog(AlertDialog的修改样式)

LayoutInflater inflater = LayoutInflater(AudioActivity.this);
View timepickerview = inflater.inflate(R.layout.timepicker, null);

final Dialog loading = new Dialog(context, R.style.customstyle);//设置样式
loading.setCancelable(false);//点击屏幕不可消失
loading.show();//必须写在setContentView前面
int number = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 10, AudioActivity.this.getResources().getDisplayMetrics());
loading.setContentView(timepickerview,new RelativeLayout.LayoutParams(number*30, number*18));

Button positiveButton = (Button) timepickerview.findViewById(R.id.positiveButton);//确定按钮
Button negativeButton = (Button) timepickerview.findViewById(R.id.negativeButton);//取消按钮
positiveButton.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View v) {

}
});

xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/timePicker1"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/wheelview"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight=""
        android:orientation="horizontal" >

        <com.mogunote.time.WheelView
            android:id="@+id/year"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="" />

        <com.mogunote.time.WheelView
            android:id="@+id/month"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="" />

        <com.mogunote.time.WheelView
            android:id="@+id/day"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="" />

        <com.mogunote.time.WheelView
            android:id="@+id/hour"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="" />

        <com.mogunote.time.WheelView
            android:id="@+id/min"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="" />

        <com.mogunote.time.WheelView
            android:id="@+id/sec"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="" />
    </LinearLayout>

    <RelativeLayout
        android:id="@+id/timePicker"
        android:layout_width="wrap_content"
        android:layout_height="30dp"
        android:layout_below="@id/wheelview"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="10dp"
        android:layout_marginBottom="10dp" >

        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@android:color/transparent"
            android:text="@string/alarm"
            android:textColor="@android:color/white"
            android:textSize="18dip" />

        <ToggleButton
            android:id="@+id/toggle_AutoPlay"
            android:layout_width="60dp"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:layout_toRightOf="@id/tv"
            android:background="@drawable/btn_toggle"
            android:gravity="left|center_vertical"
            android:textOff=""
            android:textOn="" />
    </RelativeLayout>

    <View
            android:layout_width="fill_parent"
            android:layout_height="1px"
            android:background="@color/gray"/>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/positiveButton"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_marginTop="3dip"
            android:text="确定"
            android:background="@color/white"
            android:textColor="@color/blue"
            android:layout_weight=""
            android:singleLine="true" />
    <View
            android:layout_width="1px"
            android:layout_height="match_parent"
            android:background="@color/gray"
            />
        <Button
            android:id="@+id/negativeButton"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_marginTop="3dip"
            android:text="取消"
             android:background="@color/white"
            android:textColor="@color/blue"
            android:layout_weight=""
            android:singleLine="true" />
    </LinearLayout>

</LinearLayout>