自定义progressbar

<ProgressBar
            android:id="@+id/progressBar1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@android:color/transparent"
            android:indeterminateDrawable="@drawable/progressbar" />

progressbar.xml

<?xml version="1.0" encoding="utf-8"?>
<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromDegrees="0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="360" >

    <shape
        android:innerRadiusRatio="3"
        android:shape="ring"
        android:thicknessRatio="8"
        android:useLevel="false" >
        <gradient
            android:centerColor="@color/title_color"
            android:centerY="0.50"
            android:endColor="@color/title_color"
            android:startColor="@color/transparent"
            android:type="sweep"
            android:useLevel="false" />
    </shape>

</animated-rotate>

全部代码

<style name="Animation.Dialog">
        <item name="windowEnterAnimation">@anim/dialog_enter</item>
        <item name="windowExitAnimation">@anim/dialog_exit</item>
    </style>

<!-- 更多登录等待框的样式 -->
    </style>
        <style name="loadingDialogStyle" parent="android:Theme.Dialog">
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <!-- 对话框是否有遮盖 -->
        <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
        <item name="android:backgroundDimEnabled">true</item>
    </style>

public class ThirdLoginLoadingDialog extends Dialog {
    private TextView tv;

    public ThirdLoginLoadingDialog(Context context) {
        super(context, R.style.loadingDialogStyle);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_thirdlogin_dialog_loading);
        tv = (TextView) this.findViewById(R.id.tv);
        tv.setText("正在登录...");
        LinearLayout linearLayout = (LinearLayout) this
                .findViewById(R.id.LinearLayout);
        linearLayout.getBackground().setAlpha(0);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/transparent"
    android:gravity="center"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/LinearLayout"
        android:layout_width="160dp"
        android:layout_height="160dp"
        android:background="@drawable/thirdlogin_dialog_bg"
        android:gravity="center"
        android:orientation="vertical" >

        <ProgressBar
            android:id="@+id/progressBar1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@android:color/transparent"
            android:indeterminateDrawable="@drawable/progressbar" />

        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:paddingTop="10dp"
            android:textColor="@android:color/white" />
    </LinearLayout>

</LinearLayout>

最后 在主活动中加上

private ThirdLoginLoadingDialog dialog;

    dialog = new ThirdLoginLoadingDialog(this);

    dialog.setCanceledOnTouchOutside(false);//防止触摸其他地方，程序报错

    dialog.show();

    dialog.dismiss();