伙计们我有一个问题,当我们在android中编写一个xml时,我的代码给出了一个Exception作为权限被拒绝.任何人都可以告诉它将如何被删除.
package com.ex.createXml;
import android.app.Activity;
import android.os.Bundle;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import org.xmlpull.v1.XmlSerializer;
import android.os.Environment;
import android.util.Log;
import android.util.Xml;
import android.widget.TextView;
public class createXml extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
File newxmlfile = new File("/data/new.xml");
try{
newxmlfile.createNewFile();
}catch(IOException e)
{
Log.e("IOException", "Exception in create new File(");
}
FileOutputStream fileos = null;
try{
fileos = new FileOutputStream(newxmlfile);
}catch(FileNotFoundException e)
{
Log.e("FileNotFoundException",e.toString());
}
XmlSerializer …你能告诉我xml文件的完整路径是什么,它是通过以下方法创建的:
fileos = openFileOutput("new.xml", MODE_PRIVATE);
谢谢您的帮助.
我有一个问题,我想在Android上的ImageView上粘贴图像,并且在一段时间后定期更改图像.表示ImageView中显示的逐个图像.我在Java的帮助下这样做但是我遇到了一些问题,即Thread没有附加什么.请查看下面给出的代码并告诉我确切的错误以及如何删除该错误或给我一些不同的方法来做到这一点.
package com.ex.thread;
import com.ex.thread.R;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ImageView;
public class thread extends Activity implements Runnable{
/** Called when the activity is first created. */
public static Integer[] mThumbIds = {
R.drawable.al1,R.drawable.al2,R.drawable.al3,R.drawable.al4,
};
Thread th;
ImageView iv;
public void run()
{
for(int i=0;i<3;i++)
{
iv.setImageResource(mThumbIds[i]);
System.out.println("Sanat Pandey");
try{
Thread.sleep(3000);
}catch(Exception e)
{
System.out.println(e);
}
}
}
public void create()
{
Thread th = new Thread(new thread());
th.start();
try{
Thread.sleep(3000);
}catch(Exception e)
{
System.out.println(e);
}
}
@Override …当另一个活动在后台加载时,我想在活动的标题栏上绘制一个旋转轮.但我不知道该怎么做.请帮帮我.听我不想要进度条,我想要一些像屏幕标题栏上的进度条这样的东西,它一直在运行,直到另一个活动被加载？...........
我有一个问题,我正在解析一个JSON响应,但它返回一个错误:
cannot be converted into JSONArray
那可能的解决方案是什么？
我的JSON回复:
BIZRATE.Suggest.callback({
"results":{
"status":200,
"keyword":"iphone",
"suggestions":[
"<b>iphone<\/b>",
"<b>iphone<\/b> cover",
"<b>iphone<\/b> 4",
"<b>iphone<\/b> case",
"rhinestone <b>iphone<\/b> cases",
"bling <b>iphone<\/b> case",
"glitter <b>iphone<\/b> case",
"<b>iphone<\/b> 3g",
"purple <b>iphone<\/b> case",
"<b>iphone<\/b> 4 cases"
]
}
})
我的代码:
package com.ex.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class test extends Activity {
/** Called when …我有一个问题,当我使用json解析一个活动时,第一次它在前面运行非常好,但第二次当我想运行相同的活动时,它返回窗口泄漏错误.这个问题的解决方案是什么？
错误:
05-20 12:02:14.579: ERROR/WindowManager(321): Activity org.shopzilla.android.search.SearchResultActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44fab6b8 that was originally added here
05-20 12:02:14.579: ERROR/WindowManager(321): android.view.WindowLeaked: Activity org.shopzilla.android.search.SearchResultActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44fab6b8 that was originally added here
05-20 12:02:14.579: ERROR/WindowManager(321): at android.view.ViewRoot.<init>(ViewRoot.java:247)
05-20 12:02:14.579: ERROR/WindowManager(321): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
05-20 12:02:14.579: ERROR/WindowManager(321): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
05-20 12:02:14.579: ERROR/WindowManager(321): at android.view.Window$LocalWindowManager.addView(Window.java:424)
05-20 12:02:14.579: ERROR/WindowManager(321): at android.app.Dialog.show(Dialog.java:241)
05-20 12:02:14.579: ERROR/WindowManager(321): at android.app.ProgressDialog.show(ProgressDialog.java:107)
05-20 12:02:14.579: ERROR/WindowManager(321): at android.app.ProgressDialog.show(ProgressDialog.java:90)
05-20 12:02:14.579: ERROR/WindowManager(321): at org.shopzilla.android.search.SearchResultActivity.onCreate(SearchResultActivity.java:126)
05-20 12:02:14.579: ERROR/WindowManager(321): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-20 12:02:14.579: ERROR/WindowManager(321): at …我有一个问题,我在button.setOnClickListner上收到了nullpointer异常.我不知道为什么.我建议我解决这个问题.
Error:
05-27 20:22:24.194: ERROR/AndroidRuntime(336): java.lang.RuntimeException: Unable to start activity ComponentInfo{org.shopzilla.android.common/org.shopzilla.android.product.ProductShareActivity}: java.lang.NullPointerException
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at android.os.Handler.dispatchMessage(Handler.java:99)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at android.os.Looper.loop(Looper.java:123)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at android.app.ActivityThread.main(ActivityThread.java:3683)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at java.lang.reflect.Method.invokeNative(Native Method)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at java.lang.reflect.Method.invoke(Method.java:507)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): at dalvik.system.NativeStart.main(Native Method)
05-27 20:22:24.194: ERROR/AndroidRuntime(336): Caused by: java.lang.NullPointerException …