Android loading

【来源网络】

public class LoadingUtil {
    public static Dialog createLoadingDialog(Context context, String msg) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View v = inflater.inflate(R.layout.dialog_loading, null);// 得到加载view
        LinearLayout layout = (LinearLayout) v
                .findViewById(R.id.dialog_loading_view);// 加载布局
        TextView tipTextView = (TextView) v.findViewById(R.id.tipTextView);// 提示文字
        tipTextView.setText(msg);// 设置加载信息

        Dialog loadingDialog = new Dialog(context, R.style.MyDialogStyle);// 创建自定义样式dialog
        loadingDialog.setCancelable(true); // 是否可以按“返回键”消失
        loadingDialog.setCanceledOnTouchOutside(false); // 点击加载框以外的区域
        loadingDialog.setContentView(layout, new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.MATCH_PARENT));// 设置布局
        /**
         *将显示Dialog的方法封装在这里面
         */
        Window window = loadingDialog.getWindow();
        WindowManager.LayoutParams lp = window.getAttributes();
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
        window.setGravity(Gravity.CENTER);
        window.setAttributes(lp);
        window.setWindowAnimations(R.style.PopWindowAnimStyle);
        loadingDialog.show();

        return loadingDialog;
    }

    /**
     * 关闭dialog
     * @param mDialogUtils
     */
    public static void closeDialog(Dialog mDialogUtils) {
        if (mDialogUtils != null && mDialogUtils.isShowing()) {
            mDialogUtils.dismiss();
        }
    }
}

调用方法：

// 先在类中定义私有变量
private Dialog dialog;

//请求后台的数据时调用
dialog = LoadingUtil.createLoadingDialog(getActivity(), "加载中");

//请求到数据后，调用
LoadingUtil.closeDialog(mDialog);

layout文件

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

    <LinearLayout
        android:layout_width="150dp"
        android:layout_height="110dp"
        android:background="@drawable/loading_bg"
        android:gravity="center"
        android:orientation="vertical"
        android:paddingBottom="10dp"
        android:paddingLeft="21dp"
        android:paddingRight="21dp"
        android:paddingTop="10dp">

        <ProgressBar
            android:id="@+id/progressBar1"
            android:layout_width="35dp"
            android:layout_height="35dp"
            android:layout_gravity="center_horizontal"
            android:indeterminateBehavior="repeat"
            android:indeterminateDrawable="@drawable/dialog_loading"
            android:indeterminateOnly="true" />

        <TextView
            android:id="@+id/tipTextView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="15dp"
            android:text="加载中..."
            android:textColor="#f0f0f0"
            android:textSize="15sp" />
    </LinearLayout>

</LinearLayout>

其中用到的资源：

• @drawable/loading_bg

  
  loading_bg相应的图片

• @drawable/dialog_loading

<?xml version="1.0" encoding="utf-8"?>
<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@mipmap/dialog_loading_img"
    android:pivotX="50%"
    android:pivotY="50%" />

dialog_loading_img相应的图片