小编Far*_*hah的帖子

我在Android中创建了一个视图,我需要从下到上为其设置动画,反之亦然.当我点击时,ImageView我需要RelativeLayout从底部到顶部动画完整,并且它成功了.但是,当我再次点击ImageView它并没有向下移动时.此外,当我点击其原始位置时,当我单击ImageView动画的原始位置时,但从RelativeLayout原始位置向下移动而不是从上到下.

这是我的代码:

ImageView iv_header;

RelativeLayout rl_footer;

boolean isBottom = true;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.rateus_layout);
    rl_footer = (RelativeLayout) findViewById(R.id.rl_footer);
    iv_header = (ImageView) findViewById(R.id.iv_up_arrow);

    iv_header.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if (isBottom) {
                FooterAnimation();
                isBottom = false;
            } else {
                headerAnimation();
                isBottom = true;
            }

        }
    });
}

public void FooterAnimation() {
    Animation hide = …

点击图片视图时,我需要为我的相对布局设置动画.

1.从底部到顶部移动相对布局(在图像视图上单击时).

2.从上到下移动(在图像视图上再次单击时).

首先,当我点击图像视图时,它工作正常,相对布局从下到上向上移动,但是当我再次点击图像视图时,它从上到下是动画,当它到达原始位置时,它隐藏在我的活动上.帮助和提前谢谢.

这是我的活动:

 public class MainActivity extends Activity {

RelativeLayout rl_footer;
ImageView iv_header;
boolean isBottom = true;
Button btn1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    rl_footer = (RelativeLayout) findViewById(R.id.rl_footer);
    iv_header = (ImageView) findViewById(R.id.iv_up_arrow);
    iv_header.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            iv_header.setImageResource(R.drawable.down_arrow);
            // iv_header.setVisibility(View.INVISIBLE);
            // iv_down.setVisibility(View.VISIBLE);
            iv_header.setPadding(0, 10, 0, 0); // substitute parameters for
                                                // left, top, right, bottom
            rl_footer.setBackgroundResource(R.drawable.up_manu_bar);
            // FooterAnimation();

            if (isBottom) {
                FooterAnimation();
                isBottom = false;
            } …

我有以下文本文件到我的SdCard.now我想通过Json解析器解析这个文件,我想解析并读取这个文件并将数据显示到我的textview中,我该怎么做？

{
"data": [
    {
        "id": "1",
        "title": "Farhan Shah",
        "duration": 10,
    },
    {
        "id": "2",
        "title": "Noman Shah",
        "duration": 10,
    },
    {
        "id": "3",
        "title": "Ahmad Shah",
        "duration": 10,
    },
    {
        "id": "4",
        "title": "Mohsin Shah",
        "duration": 10,
    },
    {
        "id": "5",
        "title": "Haris Shah",
        "duration": 10,
    }
  ]

}

这是代码:

File sdcard = Environment.getExternalStorageDirectory();

    //Get the text file

    File file = new File(sdcard,"textarabics.txt");

    String UTF8 = "utf8";
    int BUFFER_SIZE = 8192;


    //Read text from file
    StringBuilder text = …

这是我的logcat报告:

java.lang.StringIndexOutOfBoundsException: length=0; regionStart=0; regionLength=2
at java.lang.String.startEndAndLength(String.java:583)
at java.lang.String.substring(String.java:1464)
at com.buzzador.profile.getValidPhoneNumber(profile.java:1966)
at com.buzzador.profile.setDataForServer(profile.java:1717)
at com.buzzador.profile$5.onClick(profile.java:236)
at android.view.View.performClick(View.java:4377)
at android.view.View$PerformClick.run(View.java:18044)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5306)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)

我认为问题在于这个功能:

public String getValidPhoneNumber (String phoneNumber, String country)
{
    String csValidPhoneNumber = "";

    phoneNumber = getPhoneNumberWithoutReqularExpresions(phoneNumber);
    phoneNumber = phoneNumber.replaceFirst ("^0*", "");

    String csCountryCode = getCountryCode(country);

    String csAppendedCode = phoneNumber.substring(0, csCountryCode.length());
    if(csAppendedCode.equals(csCountryCode))
    {
        csValidPhoneNumber = "+" + phoneNumber;
        return csValidPhoneNumber;
    }

    csValidPhoneNumber …

我需要像我在下面的图片中提到的价格范围搜索栏或滑块.任何帮助或示例代码将不胜感激.

提前致谢.

我开发了原生Android应用程序,现在要求开发的应用程序需要在Xamarin或Titanium Appcelerator等跨平台上,现在请一些专家软件工程师建议我应该选择哪个跨平台？为什么？如果我选择Xamarin那么Xamarin的优点和缺点是什么？如果我选择Titanium Appcelerator那么钛的优点和缺点是什么？任何帮助将受到高度赞赏.