Question

1.我将重现这个问题的步骤是什么？

2.我有这个用于显示GIF文件的XML代码。 as activity_main.xml

public class TestGifView  extends WebView
{
   public TestGifView(Context context, String path) {
       loadUrl(path);
        }
}

3。我有这个代码用于显示使用的gif文件扩展webview。

public class MainActivity extends Activity {
    TestGifView testGIF;
   RelativeLayout loadingLayout;
protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);

      testGIF=new TestGifView(this,"file:///android_asset/load.gif"); 
     RelativeLayout.LayoutParams layoutParams=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT); // this for view as wrap content size.
      layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT);
       loadingLayout=(RelativeLayout)findViewById(R.id.loadingLayout);
         loadingLayout.addView(testGIF,layoutParams);

4.我有这段代码来访问我的Activity

中的TestGifView类

{{1}}

5.我正在获得输出

我应该这样出去。帮助我，如何解决这个问题？

Answer 1

首先，将fill_parent替换为match_parent，因为不推荐使用fill_parent。其次，删除第二个RelativeLayout

Supported 'encoding' values are:            *encoding-values*
1   latin1  8-bit characters (ISO 8859-1, also used for cp1252)
1   iso-8859-n  ISO_8859 variant (n = 2 to 15)
1   koi8-r  Russian
1   koi8-u  Ukrainian
1   macroman    MacRoman (Macintosh encoding)
1   8bit-{name} any 8-bit encoding (Vim specific name)
1   cp437   similar to iso-8859-1
1   cp737   similar to iso-8859-7
1   cp775   Baltic
1   cp850   similar to iso-8859-4
1   cp852   similar to iso-8859-1
1   cp855   similar to iso-8859-2
1   cp857   similar to iso-8859-5
1   cp860   similar to iso-8859-9
1   cp861   similar to iso-8859-1
1   cp862   similar to iso-8859-1
1   cp863   similar to iso-8859-8
1   cp865   similar to iso-8859-1
1   cp866   similar to iso-8859-5
1   cp869   similar to iso-8859-7
1   cp874   Thai
1   cp1250  Czech, Polish, etc.
1   cp1251  Cyrillic
1   cp1253  Greek
1   cp1254  Turkish
1   cp1255  Hebrew
1   cp1256  Arabic
1   cp1257  Baltic
1   cp1258  Vietnamese
1   cp{number}  MS-Windows: any installed single-byte codepage
2   cp932   Japanese (Windows only)
2   euc-jp  Japanese (Unix only)
2   sjis    Japanese (Unix only)
2   cp949   Korean (Unix and Windows)
2   euc-kr  Korean (Unix only)
2   cp936   simplified Chinese (Windows only)
2   euc-cn  simplified Chinese (Unix only)
2   cp950   traditional Chinese (on Unix alias for big5)
2   big5    traditional Chinese (on Windows alias for cp950)
2   euc-tw  traditional Chinese (Unix only)
2   2byte-{name} Unix: any double-byte encoding (Vim specific name)
2   cp{number}  MS-Windows: any installed double-byte codepage
u   utf-8   32 bit UTF-8 encoded Unicode (ISO/IEC 10646-1)
u   ucs-2   16 bit UCS-2 encoded Unicode (ISO/IEC 10646-1)
u   ucs-2le like ucs-2, little endian
u   utf-16  ucs-2 extended with double-words for more characters
u   utf-16le    like utf-16, little endian
u   ucs-4   32 bit UCS-4 encoded Unicode (ISO/IEC 10646-1)
u   ucs-4le like ucs-4, little endian

The {name} can be any encoding name that your system supports.  It is passed
to iconv() to convert between the encoding of the file and the current locale.
For MS-Windows "cp{number}" means using codepage {number}.
Examples:
    :set encoding=8bit-cp1252
    :set encoding=2byte-cp932

The MS-Windows codepage 1252 is very similar to latin1.  For practical reasons
the same encoding is used and it's called latin1.  'isprint' can be used to
display the characters 0x80 - 0xA0 or not.

Several aliases can be used, they are translated to one of the names above.
An incomplete list:

1   ansi    same as latin1 (obsolete, for backward compatibility)
2   japan   Japanese: on Unix "euc-jp", on MS-Windows cp932
2   korea   Korean: on Unix "euc-kr", on MS-Windows cp949
2   prc     simplified Chinese: on Unix "euc-cn", on MS-Windows cp936
2   chinese     same as "prc"
2   taiwan  traditional Chinese: on Unix "euc-tw", on MS-Windows cp950
u   utf8    same as utf-8
u   unicode same as ucs-2
u   ucs2be  same as ucs-2 (big endian)
u   ucs-2be same as ucs-2 (big endian)
u   ucs-4be same as ucs-4 (big endian)
u   utf-32  same as ucs-4
u   utf-32le    same as ucs-4le
    default     stands for the default value of 'encoding', depends on the
    environment

For the UCS codes the byte order matters.  This is tricky, use UTF-8 whenever
you can. The default is to use big-endian (most significant byte comes
first):
    name    bytes       char 
    ucs-2         11 22     1122
    ucs-2le       22 11     1122
    ucs-4   11 22 33 44 11223344
    ucs-4le 44 33 22 11 11223344

On MS-Windows systems you often want to use "ucs-2le", because it uses little
endian UCS-2.

There are a few encodings which are similar, but not exactly the same.  Vim
treats them as if they were different encodings, so that conversion will be
done when needed.  You might want to use the similar name to avoid conversion
or when conversion is not possible:

    cp932, shift-jis, sjis
    cp936, euc-cn

首先尝试，如果它不起作用，那么尝试Suhas B解决方案

    <?xml version="1.0" encoding="utf-8"?>  
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/re/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="#000000"
      android:id="@+id/loadingLayout">
    </RelativeLayout>

Answer 2

我引用了这个链接“http://androiddreamers.blogspot.in/2014/02/example-to-show-animated-gif-image-in.html”，我得到了正确的输出。

Answer 3

在activity_main.xml：

中试用此代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

    <RelativeLayout
        android:id="@+id/loadingLayout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:scrollbars="none">
    </RelativeLayout>

</RelativeLayout>

Answer 4

WebView的一个问题与wrapContent不兼容。我有解决方案

替换

RelativeLayout.LayoutParams layoutParams=new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

与

RelativeLayout.LayoutParams layoutParams=new RelativeLayout.LayoutParams(100, 100);

加载gif文件作为android中屏幕的中心

4 个答案: