关于" com.android.internal.policy.impl.PhoneWindow $"

时间:2015-11-06 03:51:36

标签: android database csv export

我正在开发一个Android应用程序,需要将数据库导出到CSV文件并将其写入SD卡或本地手机存储。 但是当我尝试运行我的方法时,我收到了这个错误:

  

11-06 10:41:44.266 2340-2340 /? E / WindowManager:android.view.WindowLeaked:Activity com.gook.ever_ncn.cashflow.ExportOrImport泄漏了窗口com.android.internal.policy.impl.PhoneWindow $ DecorView {6b26f41 VE .... R ......最初添加的D 0,0-1026,348}               在android.view.ViewRootImpl。(ViewRootImpl.java:363)               在android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:271)               在android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85)               在android.app.Dialog.show(Dialog.java:298)               at com.gook.ever_ncn.cashflow.ExportOrImport $ ExportDatabaseCSVTask.onPreExecute(ExportOrImport.java:96)               在android.os.AsyncTask.executeOnExecutor(AsyncTask.java:591)               在android.os.AsyncTask.execute(AsyncTask.java:539)               在com.gook.ever_ncn.cashflow.ExportOrImport.onClick(ExportOrImport.java:52)               在android.view.View.performClick(View.java:4780)               在android.view.View $ PerformClick.run(View.java:19866)               在android.os.Handler.handleCallback(Handler.java:739)               在android.os.Handler.dispatchMessage(Handler.java:95)               在android.os.Looper.loop(Looper.java:135)               在android.app.ActivityThread.main(ActivityThread.java:5257)               at java.lang.reflect.Method.invoke(Native Method)               在java.lang.reflect.Method.invoke(Method.java:372)               在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:903)               在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

我不确切知道发生了什么以及它意味着什么,我在stackoverflow.com上搜索,但我找到的答案仍然没有解决我的问题。

请高手帮帮我。 谢谢你。

编辑:我的问题与另一个问题不同,因为我的错误日志提供了一些不同的报告。

NB。这是我的活动代码:

public class ExportOrImport extends Activity implements View.OnClickListener {
Button btnImport;
Button btnExport;
private static final String TAG="ExportOrImport";
File file=null;
IODatabaseHelper dbHelper=null;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_export_or_import);
    btnImport = (Button) findViewById(R.id.btnImportCSV);
    btnImport.setOnClickListener(this);
    btnExport = (Button)findViewById(R.id.btnExportCSV);
    btnExport.setOnClickListener(this);
}

@Override
public void onClick(View arg0) {

    Log.v(TAG, "onClick called");
    if (arg0 == btnExport) {

        ExportDatabaseCSVTask task = new ExportDatabaseCSVTask();
        task.execute();
    } else if (arg0 == btnImport) {


        File exportDir = new File(Environment.getExternalStorageDirectory(), "");
        if (!exportDir.exists()) {
            exportDir.mkdirs();
        }

        file = new File(exportDir, "Database.csv");
        try {
            CSVReader reader = new CSVReader(new FileReader(file));
            String[] nextLine;
            try {
                while ((nextLine = reader.readNext()) != null) {

                    // nextLine[] is an array of values from the line

                    String transname = nextLine[0];
                    String amount = nextLine[1];
                    String transtype = nextLine[2];
                    String transdate = nextLine[3];
                    String transdateshow = nextLine[4];
                    String categid = nextLine[5];
                    String _id = nextLine[6];

                }
            } catch (IOException e) {
                e.printStackTrace();
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}

private class ExportDatabaseCSVTask extends AsyncTask<String, Void, Boolean> {
    private final ProgressDialog dialog = new ProgressDialog(ExportOrImport.this);

    @Override
    protected void onPreExecute() {

        this.dialog.setMessage("Exporting database...");
        this.dialog.show();

    }
    protected Boolean doInBackground(final String... args){

        File dbFile=getDatabasePath("database.db");
        Log.v(TAG, "Db path is: " + dbFile);  //get the path of db

        File exportDir = new File(Environment.getExternalStorageDirectory(), "");
        if (!exportDir.exists()) {
            exportDir.mkdirs();
        }

        file = new File(exportDir, "Database.csv");
        try {

            file.createNewFile();
            CSVWriter csvWrite = new CSVWriter(new FileWriter(file));

            //ormlite core method
            List<Transaction> listdata=dbHelper.GetDataPerson();
            Transaction transaction=null;

            // this is the Column of the table and same for Header of CSV file
            String arrStr1[] ={"TransID", "TransName",
                    "TransType", "TransDate", "TransDateShow",
                    "CategId", "_id"};
            csvWrite.writeNext(arrStr1);

            if(listdata.size() > 1)
            {
                for(int index=0; index < listdata.size(); index++)
                {
                    transaction=listdata.get(index);
                    String arrStr[] ={transaction.getTransid(),
                            transaction.getTransname(),
                            transaction.getTranstype(),
                            transaction.getTransdate(),
                            transaction.getTransdateshow(),
                            transaction.getCategid(),
                            transaction.get_id()};
                    csvWrite.writeNext(arrStr);
                }
            }
            // sqlite core query

            /* SQLiteDatabase db = DBob.getReadableDatabase();
            //Cursor curCSV=mydb.rawQuery("select * from " + TableName_ans,null);
            Cursor curCSV = db.rawQuery("SELECT * FROM table_ans12",null);
            csvWrite.writeNext(curCSV.getColumnNames());

           while(curCSV.moveToNext())  {

                String arrStr[] ={curCSV.getString(0),curCSV.getString(1)};
                curCSV.getString(2),curCSV.getString(3),curCSV.getString(4)
                csvWrite.writeNext(arrStr);

            }
       */
            csvWrite.close();
            return true;
        }
        catch (IOException e){
            Log.e("MainActivity", e.getMessage(), e);
            return false;
        }
    }

    @Override
    protected void onPostExecute(final Boolean success) {

        if (this.dialog.isShowing()){
            this.dialog.dismiss();
        }
        if (success){
            Toast.makeText(ExportOrImport.this, "Export successful!", Toast.LENGTH_SHORT).show();
        }
        else {
            Toast.makeText(ExportOrImport.this, "Export failed!", Toast.LENGTH_SHORT).show();
        }
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_export_or_import, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

}

1 个答案:

答案 0 :(得分:1)

在您调用Toast.maketext的onPostExecute中,您使用的是ExportOrImport.this,它可能是OnClickListener类型。 创建一个Context变量(context)并在onCreate方法context=this中分配它,然后使用:

Toast.makeText(context, "Export Succesful!", Toast.LENGTH_SHORT).show();