SQlite'ten Lat Long'u ayıklayın ve web görünümünde görüntüleyin

Şu anda java yöntemine javascript'ten erişerek tüm en uzun değerleri web görünümünde görüntülemek istiyorum ancak bu en uzun değerleri göstermiyor.SQlite'ten Lat Long'u ayıklayın ve web görünümünde görüntüleyin

size

static final String TAG = "JavascriptDataDemo"; 

//double[] data = new double[] {42.6, 24, 17, 15.4}; 
DataHelper myDB=new DataHelper(this); 

/** This passes our data out to the JS */ 
@JavascriptInterface 
public String getData() { 
    myDB.insert(16.5048, 80.6338); 
    myDB.insert(16.5024,80.6432); 
    myDB.insert(16.512,80.6216); 
    myDB.insert(16.5124,80.6219); 

    Cursor cursor = myDB.fetchAllCountries(); 
    double[] array = new double[cursor.getCount()]; 
    double[] array1=new double[cursor.getCount()]; 
    int i = 0; 
    if (cursor.moveToFirst()) { 
     do { 
      double data = cursor.getDouble(cursor.getColumnIndex("lat")); 
      double data1=cursor.getDouble(cursor.getColumnIndex("longt")); 
      array[i] = data; 
      array1[i]=data1; 
      i++; 

     } while (cursor.moveToNext()); 

    } 

    Log.d(TAG, "getData() called"); 
    return a1dToJson(array,array1).toString(); 
} 

/** Allow the JavaScript to pass some data in to us. 
@JavascriptInterface 
public void setData(String newData) throws JSONException { 
    Log.d(TAG, "MainActivity.setData()"); 
    JSONArray streamer = new JSONArray(newData); 
    data = new double[streamer.length()]; 
    for (int i = 0; i < streamer.length(); i++) { 
     Double n = streamer.getDouble(i); 
     data[i] = n; 
    } 
}*/ 

private Activity activity; 

public Context getActivity() { 
    return activity; 
} 

public void setActivity(Activity app) { 
    this.activity = app; 
} 

@JavascriptInterface 
public void finish() { 
    Log.d(TAG, "ArrayApplication.finish()"); 
    activity.finish(); 
} 

/** Sorry for not using the standard org.json.JSONArray but even in Android 4.2 it lacks 
* the JSONArray(Object[]) constructor, making it too painful to use. 
*/ 
private String a1dToJson(double[] data,double[] data1) { 
    StringBuffer sb = new StringBuffer(); 
    sb.append("["); 
    for (int i = 0,j=0; (i < data.length) && (j<data1.length); i++,j++) { 
     double d = data[i]; 
     double s=data1[j]; 
     if (i > 0 && j>0) { 
      sb.append("["); 
      sb.append(d); 
      sb.append(","); 
      sb.append(s); 
      sb.append("]"); 
     } 
    } 
    sb.append("]"); 
    return sb.toString(); 
} 
}

android etkinlik erişim yöntemini

benim index.html verileri görüntülemek için benim WebviewActivity.java

ederiz onu cottect için lütfen yardım edin

<html> 
<head> 

<script> 
    var showData = function() { 
     var data = android.getData(); 
     data = JSON.parse(data); 
     window.alert("Hello! Data are: " + data + "; first = " + data[0]); 
    } 

</script> 

</head> 

<body> 


<input type="button" value="Display data" onclick="showData()"> 

<input type="button" value="Update data" onclick="setData();"> 

<br/> 

<input type="button" value="Done" onclick="android.finish();"> 

</body> 
</html>

kaynak

2016-04-04 Varma

Sonunda cevabı aldım

Dosya

<html> 
<head> 

<script> 
    var showData = function() { 
     var data = android.getData(); 
     data=JSON.parse(data); 
     var data1 = android.getLong(); 
     data1=JSON.parse(data1); 
     window.alert("Hello! Data are: " + data); 
     window.alert("Hello! Data are: " + data1); 
    } 

</script> 

    </head> 

<body> 

    <input type="button" value="Display data" onclick="showData()"> 


    <input type="button" value="Done" onclick="android.finish();"> 

    </body> 
     </html>

javascript

DataHelper myDB=new DataHelper(this); 


//double[] data = new double[] {42.6, 24, 17, 15.4}; 

/** This passes our data out to the JS */ 
@JavascriptInterface 
public String getData() { 

    myDB.insert(16.5048, 80.6338); 
    myDB.insert(16.5024,80.6432); 
    myDB.insert(16.512,80.6216); 
    myDB.insert(16.5124,80.6219); 

    Cursor cursor=myDB.fetchAllCountries(); 
    double[] arr=new double[cursor.getCount()]; 
    int i=0; 

    if(cursor.moveToFirst()) 
    { 
     do { 
      double data=cursor.getDouble(cursor.getColumnIndex("lat")); 
      arr[i]=data; 
      i++; 

     }while (cursor.moveToNext()); 

    } 




    Log.d(TAG, "getData() called"); 
    return a1dToJson(arr).toString(); 
} 


@JavascriptInterface 
public String getLong() { 

    Cursor cursor1=myDB.fetchAllCountries(); 
    double[] arr1=new double[cursor1.getCount()]; 
    int i=0; 

    if(cursor1.moveToFirst()) 
    { 
     do { 
      double data1=cursor1.getDouble(cursor1.getColumnIndex("longt")); 
      arr1[i]=data1; 
      i++; 

     }while (cursor1.moveToNext()); 

    } 




    Log.d(TAG, "getData() called"); 
    return a1dToJson(arr1).toString(); 
} 


private Activity activity; 

public Context getActivity() { 
    return activity; 
} 

public void setActivity(Activity app) { 
    this.activity = app; 
} 

@JavascriptInterface 
public void finish() { 
    Log.d(TAG, "ArrayApplication.finish()"); 
    activity.finish(); 
} 

/** Sorry for not using the standard org.json.JSONArray but even in Android 4.2 it lacks 
* the JSONArray(Object[]) constructor, making it too painful to use. 
*/ 
private String a1dToJson(double[] data) { 
    StringBuffer sb = new StringBuffer(); 
    sb.append("["); 
    for (int i = 0; i < data.length; i++) { 
     double d = data[i]; 
     if (i > 0) 
      sb.append(","); 
     sb.append(d); 
    } 
    sb.append("]"); 
    return sb.toString(); 
}

kaynak

2016-04-13 10:50:35 Varma

SQlite'ten Lat Long'u ayıklayın ve web görünümünde görüntüleyin

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