ActivityThread.performLaunchActivity（ActivityThread $ ActivityClientRecord、Intent）

Question

私のアプリが完成したと言うことができ、弾丸ではないのにテストのために仕事をしなければならないと言うことができますが、問題が発生するとこれらのエラーが発生します。ここで

Thread [<1> main] (Suspended (exception RuntimeException)) 
ActivityThread.performLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1573  
ActivityThread.handleLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1667 
ActivityThread.access$1500(ActivityThread, ActivityThread$ActivityClientRecord, Intent) line: 117 
ActivityThread$H.handleMessage(Message) line: 935 
ActivityThread$H(Handler).dispatchMessage(Message) line: 99 
Looper.loop() line: 123 
ActivityThread.main(String[]) line: 3691  
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method] 
Method.invoke(Object, Object...) line: 507 
ZygoteInit$MethodAndArgsCaller.run() line: 847 
ZygoteInit.main(String[]) line: 605 
NativeStart.main(String[]) line: not available [native method] 

は、ここに私のコードMain.java

package bitcoin.Virwox; 

import java.io.IOException; 
import java.io.InputStream; 
import java.math.BigDecimal; 
import java.text.NumberFormat; 
import java.util.Locale; 
import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 
import android.app.Activity; 
import android.app.ProgressDialog; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.CheckBox; 
import android.widget.TextView; 

public class Main extends Activity { 

//Variables 
ProgressDialog dialog = new ProgressDialog(null); 
JSONObject jArray = new JSONObject(); 
int BTCSell; 
int GBPBuy; 
int Ammount; 
int BTCSLLAmmount; 
int GBPSLLAmmount; 
int Total; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main);   
} 


public void Start(View view) { 
    dialog.setTitle("Please Wait"); 
    dialog.setIcon(R.drawable.icon); 
    dialog.setMessage("Loading..."); 
    dialog.setIndeterminate(true); 
    dialog.setCancelable(false); 
    dialog.show(); 

    Ammount = Integer.valueOf(findViewById(R.id.Amountinputtxt).toString()); 
    GetInfo(); 
    Process(); 

    dialog.hide(); 
} 

public void GetInfo() { 
    try { 
     BestBuySell(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (Exception e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    final CheckBox checkBox = (CheckBox) findViewById(R.id.VirwoxFeeChk); 
    if (checkBox.isChecked()) { 
     ProcessEstimates(); 
     Total = GBPSLLAmmount; 
    } 
    else { 
      int holder; 
      holder = BTCSell*Ammount; 
      Total = (int)(holder/GBPBuy); 
    } 

} 

private void ProcessEstimates() { 
    try { 
     BTCSLL(); 
    } catch (Exception e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    try { 
     GBPSLL(); 
    } catch (JSONException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

} 
public void BTCSLL() throws Exception{ 
    //retrieve data for BTC>SLL 
    try { 
     HttpClient httpclient = new DefaultHttpClient(); 
     String http = "http://api.virwox.com/api/json.php?method=estimateMarketOrder&amount="+Ammount+"&orderType=SELL&instrument=BTC/SLL";  
     HttpGet httpget = new HttpGet(http); 
     HttpResponse response = httpclient.execute(httpget); 
     HttpEntity entity = response.getEntity(); 

     byte buffer[] = new byte[1024] ; 
     InputStream is = entity.getContent() ; 
     int numBytes = is.read(buffer) ; 
     is.close(); 

     String entityContents = new String(buffer,0,numBytes) ; 
     Log.d("xxx",entityContents); 

     try { 
      jArray = new JSONObject(entityContents); 

     } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     finally{} 
    } catch (ClientProtocolException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    finally{} 

    //Parse Data 
    JSONArray result = jArray.getJSONArray("result"); 
    //parse BTC>SLL 
    JSONObject f = result.getJSONObject(0); 
    BTCSLLAmmount = Integer.parseInt(f.getString("amount")); 
} 
public void GBPSLL() throws JSONException{ 
//retrieve data for SLL>GBP 
try { 
    HttpClient httpclient = new DefaultHttpClient(); 
    String http = "http://api.virwox.com/api/json.php?method=estimateMarketOrder&amount="+BTCSLLAmmount+"&orderType=BUY&instrument=SLL/GBP";   
    HttpGet httpget = new HttpGet(http); 
    HttpResponse response = httpclient.execute(httpget); 
    HttpEntity entity = response.getEntity(); 

    byte buffer[] = new byte[1024] ; 
    InputStream is = entity.getContent() ; 
    int numBytes = is.read(buffer) ; 
    is.close(); 

    String entityContents = new String(buffer,0,numBytes) ; 
    Log.d("xxx",entityContents); 

    try { 
     jArray = new JSONObject(entityContents); 

    } catch (JSONException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    finally{} 
} catch (ClientProtocolException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} 
finally{} 

//Parse Data 
JSONArray result = jArray.getJSONArray("result"); 
//parse BTC>SLL 
JSONObject e2 = result.getJSONObject(0); 
GBPSLLAmmount = Integer.parseInt(e2.getString("amount")); 
} 

public void Process() { 
    CheckBox checkBox = (CheckBox) findViewById(R.id.PaypalFeeChk); 
    if (checkBox.isChecked()) {    
     Total = Total - 1; 
    } 
    TextView tv = (TextView)findViewById(R.id.Outputtxt); 
    tv.setText("Total: £" + Total + ".00"); 

    CurrentRate(); 
} 

public void CurrentRate(){ 
    float holder; 
    holder = BTCSell/GBPBuy; 
    BigDecimal payment = new BigDecimal(holder); 
    NumberFormat n = NumberFormat.getCurrencyInstance(Locale.UK); 
    double doublePayment = payment.doubleValue(); 
    String s = n.format(doublePayment); 
    TextView tv = (TextView)findViewById(R.id.CurrentRatetxt); 
    tv.setText(s); 
} 

public void BestBuySell() throws Exception, IOException{ 
    //retrieve data 
    try { 
     HttpClient httpclient = new DefaultHttpClient(); 

     HttpGet httpget = new HttpGet("http://api.virwox.com/api/json.php?method=getBestPrices&symbols[0]=BTC/SLL&symbols[1]=GBP/SLL"); 
     HttpResponse response = httpclient.execute(httpget); 
     HttpEntity entity = response.getEntity(); 

     byte buffer[] = new byte[1024] ; 
     InputStream is = entity.getContent() ; 
     int numBytes = is.read(buffer) ; 
     is.close(); 

     String entityContents = new String(buffer,0,numBytes) ; 
     Log.d("xxx",entityContents); 

     try { 
      jArray = new JSONObject(entityContents); 

     } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     finally{} 
    } 
    finally{} 
    //parse info 
    JSONArray result = jArray.getJSONArray("result"); 
    //parse BTC>SLL 
    JSONObject e = result.getJSONObject(0); 
    BTCSell = Integer.parseInt(e.getString("bestBuyPrice")); 
    //Parse SLL>GBP 
    e = result.getJSONObject(1); 
    GBPBuy = Integer.parseInt(e.getString("bestSellPrice")); 
} 
} 

である私はこの問題を解決する方法を

<?xml version="1.0" encoding="utf-8"?> 
<AbsoluteLayout android:id="@+id/widget43" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"> 
<TextView android:text="BTC-&gt;GBP" android:textSize="45sp" android:layout_width="fill_parent" android:layout_height="78px" android:layout_x="1dip" android:layout_y="20dip" android:gravity="center_horizontal" android:id="@+id/Title"></TextView> 
<Button android:layout_width="350px" android:layout_height="wrap_content" android:layout_x="42dip" android:layout_y="298dip" android:text="Calculate" android:id="@+id/Button"></Button> 
<TextView android:textSize="15sp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_x="14dip" android:layout_y="388dip" android:text="Current Exchange rate: " android:id="@+id/Ratetxt"></TextView> 
<CheckBox android:checked="true" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_y="148dip" android:layout_x="190dip" android:text="Paypal Fee" android:id="@+id/PaypalFeeChk"></CheckBox> 
<CheckBox android:checked="true" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_x="190dip" android:layout_y="106dip" android:text="Virwox Fees" android:id="@+id/VirwoxFeeChk"></CheckBox> 
<TextView android:layout_x="182dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_y="388dip" android:textSize="15sp" android:id="@+id/CurrentRatetxt" android:text="£0.00"></TextView> 
<TextView android:layout_height="wrap_content" android:layout_x="1dip" android:layout_y="245dip" android:gravity="center" android:textSize="18sp" android:id="@+id/Outputtxt" android:text="£0.00" android:layout_width="fill_parent"></TextView> 
<EditText android:text="EditText" android:layout_width="200px" android:layout_height="wrap_content" android:layout_x="48dip" android:layout_y="126dip" android:numeric="integer" android:id="@+id/Amountinputtxt"></EditText> 
</AbsoluteLayout> 

Main.xmlはどのようにこれが原因とされてレイアウトだと？

Answer 1

私はこの行の原因と思われます。

ProgressDialog dialog = new ProgressDialog(null); 

代わりに、onCreate(...)に開始することをお勧めします。

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    dialog = new ProgressDialog(this); 
} 

Answer 2

のonCreateメソッドの前にコンテキスト変数を宣言してください：

Context thisContext = this;    

@Override 
public void onCreate(Bundle savedInstanceState) { 

次にあなたが宣言するとき：

AlertDialog.Builder builder = new AlertDialog.Builder(thisContext); 

をコンテキスト変数を使用します。

は使用しないでください：今のトリックをしました^^

AlertDialog.Builder(this);