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Android
shows me blank with blinking arrow
shawn peter
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Posts: 1325
1
posted 12 years ago
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This is my main class
package com.aruna.location; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.telephony.TelephonyManager; import android.telephony.gsm.GsmCellLocation; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class CellID extends Activity implements OnClickListener{ GsmCellLocation location; int cellID, lac; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); location = (GsmCellLocation) tm.getCellLocation(); cellID = location.getCid(); lac = location.getLac(); Button bt=(Button)findViewById(R.id.displayMap); bt.setOnClickListener(this); } private boolean displayMap(int cellID, int lac) throws Exception { String urlString = "http://www.google.com/glm/mmap"; //---open a connection to Google Maps API--- URL url = new URL(urlString); URLConnection conn = url.openConnection(); HttpURLConnection httpConn = (HttpURLConnection) conn; httpConn.setRequestMethod("POST"); httpConn.setDoOutput(true); httpConn.setDoInput(true); httpConn.connect(); //---write some custom data to Google Maps API--- OutputStream outputStream = httpConn.getOutputStream(); WriteData(outputStream, cellID, lac); //---get the response--- InputStream inputStream = httpConn.getInputStream(); DataInputStream dataInputStream = new DataInputStream(inputStream); //---interpret the response obtained--- dataInputStream.readShort(); dataInputStream.readByte(); int code = dataInputStream.readInt(); if (code == 0) { double lat = (double) dataInputStream.readInt() / 1000000D; double lng = (double) dataInputStream.readInt() / 1000000D; dataInputStream.readInt(); dataInputStream.readInt(); dataInputStream.readUTF(); //---display Google Maps--- String uriString = "geo:" + lat + "," + lng; Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(uriString)); startActivity(intent); return true; } else { return false; } } private void WriteData(OutputStream out, int cellID, int lac) throws IOException { DataOutputStream dataOutputStream = new DataOutputStream(out); dataOutputStream.writeShort(21); dataOutputStream.writeLong(0); dataOutputStream.writeUTF("en"); dataOutputStream.writeUTF("Android"); dataOutputStream.writeUTF("1.0"); dataOutputStream.writeUTF("Web"); dataOutputStream.writeByte(27); dataOutputStream.writeInt(0); dataOutputStream.writeInt(0); dataOutputStream.writeInt(3); dataOutputStream.writeUTF(""); dataOutputStream.writeInt(cellID); dataOutputStream.writeInt(lac); dataOutputStream.writeInt(0); dataOutputStream.writeInt(0); dataOutputStream.writeInt(0); dataOutputStream.writeInt(0); dataOutputStream.flush(); } @Override public void onClick(View v) { try { displayMap(cellID, lac); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
this is my main xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <Button android:id="@+id/displayMap" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Display map of current location" /> <TextView android:id="@+id/status" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout>
this is my manifest file
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.aruna.location" android:versionCode="1" android:versionName="1.0"> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission> <uses-permission android:name="android.permission.INTERNET"></uses-permission> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".CellID" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
this is working fine.But after clicking the button it gives me blank screen with blinking arrow.See the attachment.
screenshot_2011-11-23_1632.png
shawn peter
Ranch Hand
Posts: 1325
1
posted 12 years ago
Number of slices to send:
Optional 'thank-you' note:
Send
can anyone help me ?
Did you see how Paul
cut 87% off of his electric heat bill with 82 watts of micro heaters
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