用于gps位置的sqlite数据库

时间：2012-04-10 07:08:22

标签： android sql

我是android新手。我遵循了http://www.youtube.com/watch?v=1JyC_xv20yE的教程 程序中没有错误。但是模拟器给出了“应用程序意外停止”

将日志文件另存为

04-11 19:50:14.295: D/AndroidRuntime(338): Shutting down VM
04-11 19:50:14.295: W/dalvikvm(338): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-11 19:50:14.315: E/AndroidRuntime(338): FATAL EXCEPTION: main
04-11 19:50:14.315: E/AndroidRuntime(338): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sql/com.sql.SQLiteExample}: java.lang.ClassCastException: com.sql.SQLiteExample
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.os.Looper.loop(Looper.java:123)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.app.ActivityThread.main(ActivityThread.java:3683)
04-11 19:50:14.315: E/AndroidRuntime(338):  at java.lang.reflect.Method.invokeNative(Native Method)
04-11 19:50:14.315: E/AndroidRuntime(338):  at java.lang.reflect.Method.invoke(Method.java:507)
04-11 19:50:14.315: E/AndroidRuntime(338):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-11 19:50:14.315: E/AndroidRuntime(338):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-11 19:50:14.315: E/AndroidRuntime(338):  at dalvik.system.NativeStart.main(Native Method)
04-11 19:50:14.315: E/AndroidRuntime(338):  at com.sql.SQLiteExample.onCreate(SQLiteExample.java:28)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-11 19:50:14.315: E/AndroidRuntime(338):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
04-11 19:50:14.315: E/AndroidRuntime(338):  ... 11 more
04-11 19:55:14.435: I/Process(338): Sending signal. PID: 338 SIG: 9
04-11 20:02:38.005: W/dalvikvm(367): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-11 20:02:38.045: E/AndroidRuntime(367): FATAL EXCEPTION: main
04-11 20:02:38.045: E/AndroidRuntime(367): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sql/com.sql.SQLiteExample}: java.lang.ClassCastException: com.sql.SQLiteExample
04-11 20:02:38.045: E/AndroidRuntime(367):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
04-11 20:02:38.045: E/AndroidRuntime(367):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
04-11 20:02:38.045: E/AndroidRuntime(367):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-11 20:02:38.045: E/AndroidRuntime(367):  at android.os.Looper.loop(Looper.java:123)
04-11 20:02:38.045: E/AndroidRuntime(367):  at android.app.ActivityThread.main(ActivityThread.java:3683)
04-11 20:02:38.045: E/AndroidRuntime(367):  at java.lang.reflect.Method.invokeNative(Native Method)
04-11 20:02:38.045: E/AndroidRuntime(367):  at java.lang.reflect.Method.invoke(Method.java:507)
04-11 20:02:38.045: E/AndroidRuntime(367):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-11 20:02:38.045: E/AndroidRuntime(367):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-11 20:02:38.045: E/AndroidRuntime(367):  at dalvik.system.NativeStart.main(Native Method)
04-11 20:02:38.045: E/AndroidRuntime(367): Caused by: java.lang.ClassCastException: com.sql.SQLiteExample
04-11 20:02:38.045: E/AndroidRuntime(367):  at com.sql.SQLiteExample.onCreate(SQLiteExample.java:28)
04-11 20:02:38.045: E/AndroidRuntime(367):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-11 20:02:38.045: E/AndroidRuntime(367):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
04-11 20:02:38.045: E/AndroidRuntime(367):  ... 11 more
04-11 20:07:38.165: I/Process(367): Sending signal. PID: 367 SIG: 9

SQLiteexample.java as 

package com.sql;

import android.app.Activity;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class SQLiteExample extends Activity implements OnClickListener{
    /** Called when the activity is first created. */
    Button sqlUpdate,sqlView;
    EditText sqllocation,sqllongi,sqllati;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sqliteexample);
        sqlUpdate = (Button)findViewById(R.id.bsqlupdate);
        sqlView = (Button)findViewById(R.id.bsqlopenview);
        sqllongi = (EditText)findViewById(R.id.longi);
        sqllati = (EditText)findViewById(R.id.lati);
        sqllocation = (EditText)findViewById(R.id.location1);
        sqlView.setOnClickListener((android.view.View.OnClickListener) this);
        sqlUpdate.setOnClickListener((android.view.View.OnClickListener) this);

    }

    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        switch (arg0.getId())
        {
        case R.id.bsqlupdate:
            boolean wrk=true;
            try{
            String location = sqllocation.getText().toString();
            String longi = sqllongi.getText().toString();
            String lati = sqllongi.getText().toString();
            Cornte entry = new Cornte(this);
            entry.open();
            entry.createEntry(location , longi, lati);

            entry.close();
            }catch (Exception e){
                wrk= false;
                String error=e.toString();
                Dialog d=new Dialog(this);
                d.setTitle("NO!!!");
                TextView tv =new TextView(this);
                tv.setText(error);
                d.setContentView(tv);
                d.show(); 

            }finally{
                if(wrk)
                {
                    Dialog d=new Dialog(this);
                    d.setTitle("YUP!!!");
                    TextView tv =new TextView(this);
                    tv.setText("SUCCESS");
                    d.setContentView(tv);
                    d.show();
                }
            }
            break;
        case R.id.bsqlopenview:
            Intent i =new Intent("com.sql.SQLVIEW");
            startActivity(i);

            break;
        }
    }

    @Override
    public void onClick(DialogInterface dialog, int which) {
        // TODO Auto-generated method stub

    }
}

2 个答案:

答案 0 :(得分：0)

错误在：

sqlView.setOnClickListener((android.view.View.OnClickListener) this);

您可以在logcat中看到它：

04-11 20:02:38.045: E/AndroidRuntime(367):  at com.sql.SQLiteExample.onCreate(SQLiteExample.java:28)

我会解释一下，首先尝试学习使用logcat，大多数情况下你应该从错误的底部开始并搜索你的命名空间的行（在这种情况下是com.sql.SQLiteExample），现在你可以看到在这个例子中，你的应用程序崩溃了什么方法：'onCreate'但最重要的是发生错误的文件+行号！

ClassCastException意味着你想把一个Object放到一个对象中它不是...... 学校的例子你得到了BaseObjects'Fall'，它有一些ChildObjects'Dogg'＆amp; '猫'，但现在你正在努力做到以下几点：

Apple apple = giveMeThatApple();
Animal a = apple;

那不行，因为'苹果'与“动物”类没有关系......我希望你能理解......

答案 1 :(得分：0)

我得到了解决方案..错误是由于错误导入导入android.content.DialogInterface.OnClickListener;而不是导入View.OnClickListener setOnClickListener(View.OnClickListener) in the type View is not applicable for the arguments (SequencerActivity) back.setOnClickListener(this);

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