[英]Android, Google Spread Sheet crashes when on menu button is pressed
[英]Android app to edit google spread sheet crashes when I moved code from one application to another
我对Java和Android开发都缺乏经验。 但是我设法制作了一个简单的Android应用程序来读取接近传感器值。 我还设法编写了一个Java应用程序,用于编辑Google电子表格中的单元格。
因此,现在我想将两者结合起来,并拥有Android应用程序,该应用程序将根据接近传感器的值更改google电子表格中单元格的值。
但是,当我合并代码时,我的应用程序崩溃了,并且我对Eclipse环境和调试器的了解不足,无法弄清发生了什么。 该应用程序将安装精美和午餐。 主视图仅显示一秒钟,然后应用崩溃。
package com.example.mysensorproject;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.Menu;
import android.widget.TextView;
import com.google.gdata.client.spreadsheet.SpreadsheetService;
import com.google.gdata.data.spreadsheet.CellEntry;
import com.google.gdata.data.spreadsheet.CellFeed;
import com.google.gdata.util.AuthenticationException;
import com.google.gdata.util.ServiceException;
public class MainActivity extends Activity implements SensorEventListener {
TextView proxText;
SensorManager sm;
Sensor proxSensor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sm=(SensorManager)getSystemService(SENSOR_SERVICE);
proxSensor=sm.getDefaultSensor(Sensor.TYPE_PROXIMITY);
proxText=(TextView)findViewById(R.id.proximityTextView);
sm.registerListener(this, proxSensor, SensorManager.SENSOR_DELAY_NORMAL);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
@Override
public void onSensorChanged(SensorEvent event) {
proxText.setText(String.valueOf(event.values[0]));
//change value in spreadsheet
SpreadsheetService service = new SpreadsheetService("wise");
service.setProtocolVersion(SpreadsheetService.Versions.V3);
try {
service.setUserCredentials("email@example.com", "password");
} catch (AuthenticationException e) {
e.printStackTrace();
}
URL url = null;
try {
url = new URL("https://spreadsheets.google.com/feeds/cells/0AuDoKcCfLURKdEQ3bVFLemY5aVh2SGQySE10QTYzRGc/od6/private/full");
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
CellFeed cellFeed = null;
try {
cellFeed = service.getFeed(url, CellFeed.class);
// System.out.println("Cell Feed Worked");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ServiceException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for (CellEntry cell : cellFeed.getEntries()) {
cell.changeInputValueLocal(String.valueOf(event.values[0]));
try {
cell.update();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ServiceException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
*/
}
}
当您尝试在UI中进行操作时,会发生这种情况。 您需要在后台执行(线程)。 您可以使用类似AsyncTask的工具:( http://developer.android.com/reference/android/os/AsyncTask.html )。
一些代码例如:
public class TaskModifySpreadsheet extends AsyncTask <Spreadsheet, Object, Spreadsheet>
{
@Override
protected Spreadsheet doInBackground(Spreadsheet... titles) {
// Do all work with the spreadsheet here. Modify cells, retrieving... etc.
}
}
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