去除自定義Dialog的白色背景:

mDialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);

這句話就可以了,一定要記得 在show()前加;

下面附上完整程式碼:

public class MyProgressDialog {

	private static Dialog mDialog;

	public static void progressDialog(Context mContext) {
		if (null == mDialog || !mDialog.isShowing()) {
			OnKeyListener keyListener = new OnKeyListener() {
				@Override
				public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
					if (keyCode == KeyEvent.KEYCODE_BACK && 
                                        event.getAction() == KeyEvent.ACTION_DOWN) {
						mDialog.dismiss();
					}
					return false;

				}
			};
			mDialog = new AlertDialog.Builder(mContext).create();
			//去除dialog背景白色
			mDialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
			//監聽返回
			mDialog.setOnKeyListener(keyListener);
			//false:dialog彈出後會點選螢幕或物理返回鍵，dialog不消失
			mDialog.setCancelable(true);
			//false:dialog彈出後會點選螢幕，dialog不消失；點選物理返回鍵dialog消失
			mDialog.setCanceledOnTouchOutside(true);
			mDialog.show();
			mDialog.setContentView(R.layout.loading_process_dialog_icon);

		}
	}

	public static void cancleProgress() {
		if (null != mDialog && mDialog.isShowing()) {
			mDialog.dismiss();
		}
	}
}
 

佈局檔案:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:orientation="horizontal"
    android:background="#00000000"
    android:padding="10dip" >

    <ProgressBar
        android:id="@+id/loading_process_dialog_progressBar"
        android:layout_width="@dimen/DIMEN_45DP"
        android:layout_height="@dimen/DIMEN_45DP"
        android:indeterminate="false"
        android:layout_centerInParent="true"
        android:indeterminateDrawable="@drawable/dialog_style_xml_icon" />

    <TextView
        android:id="@+id/loading_process_dialog_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:layout_marginTop="10dip"
        android:layout_below="@+id/loading_process_dialog_progressBar"/>

</RelativeLayout>
 

資原始檔  dialog_style_xml_icon:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item>
        <rotate
            android:drawable="@drawable/new_progress_icon"
            android:fromDegrees="0.0"
            android:pivotX="50.0%"
            android:pivotY="50.0%"
            android:toDegrees="360.0" />

        <set android:interpolator="@android:anim/linear_interpolator" >
        </set>
    </item>

</layer-list>
 

圖片資源

調起載入框:

MyProgressDialog.progressDialog(this);

載入框消失:

MyProgressDialog.cancleProgress();

效果圖如下: