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getWindow().setBackgroundDrawable(new ColorDrawable(0));
try {
    getWindow().getDecorView().setBackgroundDrawable(null);
} catch (Throwable e){

}

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<?xml version="1.0" encoding="utf-8"?>
<me.relex.photodraweeview.PhotoDraweeView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/iv_gallery_photo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:fadeDuration="1000"
    app:failureImage="@drawable/works_list_default_img"
    app:failureImageScaleType="centerInside"
    app:placeholderImage="@drawable/loading_everyday"

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public static void start(Activity context, BooksBean positionData, ImageView imageView) {
        Intent intent = new Intent(context, BookDetailActivity.class);
        intent.putExtra(EXTRA_PARAM, positionData);
        ActivityOptionsCompat options =
                ActivityOptionsCompat.makeSceneTransitionAnimation(context,
                        imageView, CommonUtils.getString(R.string.transition_book_img));//与xml文件对应
        ActivityCompat.startActivity(context, intent, options.toBundle());
    }

 RxBus.getDefault().toObservable(RxCodeConstants.JUMP_TYPE_TO_ONE, RxBusBaseMessage.class)

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public static void start(Activity context, BooksBean positionData, ImageView imageView) {
        Intent intent = new Intent(context, BookDetailActivity.class);
        intent.putExtra(EXTRA_PARAM, positionData);
        ActivityOptionsCompat options =
                ActivityOptionsCompat.makeSceneTransitionAnimation(context,
                        imageView, CommonUtils.getString(R.string.transition_book_img));//与xml文件对应
        ActivityCompat.startActivity(context, intent, options.toBundle());
    }

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class FileSplit {
    public static void splitFile(File f) throws IOException {
        int partCounter = 1;//I like to name parts from 001, 002, 003, ...
                            //you can change it to 0 if you want 000, 001, ...

        int sizeOfFiles = 1024 * 1024;// 1MB
        byte[] buffer = new byte[sizeOfFiles];

        try (BufferedInputStream bis = new BufferedInputStream(
                new FileInputStream(f))) {//try-with-resources to ensure closing stream

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/**
     * On Lollipop+ perform a circular reveal animation (an expanding circular mask) when showing
     * the search panel.
     */
    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    private void doEnterAnim() {
        // Fade in a background scrim as this is a floating window. We could have used a
        // translucent window background but this approach allows us to turn off window animation &
        // overlap the fade with the reveal animation – making it feel snappier.
        View scrim = findViewById(R.id.scrim);

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提示：默认情况下，当您将 EditText 元素设置为使用 "textPassword" 输入类型时，字体系列将设置为固定宽度。因此，您应该将其字体系列更改为 "sans-serif"，以便两个文本字段都使用匹配的字体样式。

```
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    <ImageView
        android:src="@drawable/header_logo"
        android:layout_width="match_parent"

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/** JSAPI支付 */

public JSONObject jsPay() {
  JSONObject obj = new JSONObject();
  WeixinMpAccount weixinAccount = JSON.parseObject(
      ConfigUtil.getValue("account"), WeixinMpAccount.class);
  // V3 支付
  PayPackage payPackage = new PayPackageV3(weixinAccount, "用户openid",
      "商品描述", "系统内部订单号", 1d, "IP地址", TradeType.JSAPI);
  // V2 支付

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AndroidStudio使用教程(第七弹)

本文讲解一下Gradle的应用，大家都知道Gradle使用起来非常方便，那他究竟方便在哪里？　　　　　　　　　　　　　　　　　　　　　　　　　　

• 很多时候我们在打印Log日志的时候都是需要在Debug版本中进行打印，而在正式版本中关闭。 通常我们都是用一个Config文件来配置，不知道大家有没有遇到过正式版中忘记关闭Log日志的情况。
• 多渠道包非常让人头疼。现在国内市场这么多。一个个的打多麻烦，虽然我们会用友盟打包工具等。 怎么破？

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/**
	 * Attempts to open a file for viewing.
	 * 
	 * @param fileholder The holder of the file to open.
	 */
	public static void openFile(FileHolder fileholder, Context c) {
		Intent intent = new Intent(android.content.Intent.ACTION_VIEW);

		Uri data = FileUtils.getUri(fileholder.getFile());
		String type = fileholder.getMimeType();