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关闭每次我打开我的应用我的手机上，以检查它，它接近第二它打开，并说： “”应用名称“停止”在设备应用程序上打开
它只是自动关闭，甚至没有去主版面
ps tnx帮助家伙！
调试说：
目标设备：54d1969c安装APK： C：\用户\埃雷尔\ AndroidStudioProjects \ AccountSaver \应用\构建\输出\ APK \ APP-debug.apk 上传文件： /data/local/tmp/com.erelbiran.accountsaver com.android.ddmlib.AdbCommandRejectedException：设备未经授权。 此adb服务器的$ ADB_VENDOR_KEYS未设置尝试'adb kill-server'如果 看起来不对。否则，请在您的 设备上检查确认对话框。
MainActivity
package com.erelbiran.accountsaver;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
DB myDB;
Button btnAdd;
EditText User = (EditText)findViewById(R.id.EnterUser), Pass = (EditText)findViewById(R.id.EnterPass), Acc = (EditText)findViewById(R.id.EnterAcc);
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
openDB();
btnAdd.setOnClickListener(
new View.OnClickListener()
{
public void onClick(View view) {
myDB.insertRow(User.getText().toString(), Pass.getText().toString(), Acc.getText().toString());
Toast.makeText(MainActivity.this, "Account Added!", Toast.LENGTH_SHORT).show();
}}
);
}
private void openDB(){
myDB = new DB(this);
myDB.open();
}
private void closeDB(){
myDB.close();
}
}
Menifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.erelbiran.accountsaver">
<application
android:debuggable="true"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name="MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
数据库代码：
// ------------------------------------ DBADapter.java ---------------------------------------------
package com.erelbiran.accountsaver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class DB {
/////////////////////////////////////////////////////////////////////
// Constants & Data
/////////////////////////////////////////////////////////////////////
// For logging:
private static final String TAG = "DBAdapter";
// DB Fields
public static final String KEY_ROWID = "_id";
public static final int KEY_ACCID = 0;
public static final String KEY_USER = "username";
public static final String KEY_PASS = "password";
public static final String KEY_ACC = "accounts";
//
// Setup fields
public static final int COL_USER = 1;
public static final int COL_PASS = 2;
public static final int COL_ACC = 3;
public static final String[] ALL_KEYS = new String[] {KEY_ROWID, KEY_USER, KEY_PASS, KEY_ACC};
// DB info: it's name, and the table we are using (just one).
public static final String DATABASE_NAME = "MyDb";
public static final String DATABASE_TABLE = "mainTable";
public static final int DATABASE_VERSION = 1;
private static final String DATABASE_CREATE_SQL =
"create table " + DATABASE_TABLE
+ " (" + KEY_ACCID + " integer primary key autoincrement, "
+ KEY_USER + " string not null, "
+ KEY_PASS + " string not null, "
+ KEY_ACC + " string not null"
// Rest of creation:
+ ");";
// Context of application who uses us.
private final Context context;
private DatabaseHelper myDBHelper;
private SQLiteDatabase db;
/////////////////////////////////////////////////////////////////////
// Public methods:
/////////////////////////////////////////////////////////////////////
public DB(Context ctx) {
this.context = ctx;
myDBHelper = new DatabaseHelper(context);
}
// Open the database connection.
public DB open() {
db = myDBHelper.getWritableDatabase();
return this;
}
// Close the database connection.
public void close() {
myDBHelper.close();
}
// Add a new set of values to the database.
public long insertRow(String username , String password , String account) {
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_USER, username);
initialValues.put(KEY_PASS, password);
initialValues.put(KEY_ACC, account);
return db.insert(DATABASE_TABLE, null, initialValues);
}
// Delete a row from the database, by rowId (primary key)
public boolean deleteAcc(long accId) {
String where = KEY_ACCID + "=" + accId;
return db.delete(DATABASE_TABLE, where, null) != 0;
}
public void deleteAll() {
Cursor c = getAllRows();
long rowId = c.getColumnIndexOrThrow(KEY_ROWID);
if (c.moveToFirst()) {
do {
deleteAcc(c.getLong((int) rowId));
} while (c.moveToNext());
}
c.close();
}
// Return all data in the database.
public Cursor getAllRows() {
String where = null;
Cursor c = db.query(true, DATABASE_TABLE, ALL_KEYS,
where, null, null, null, null, null);
if (c != null) {
c.moveToFirst();
}
return c;
}
// Get a specific row (by rowId)
public Cursor getRow(long rowId) {
String where = KEY_ROWID + "=" + rowId;
Cursor c = db.query(true, DATABASE_TABLE, ALL_KEYS,
where, null, null, null, null, null);
if (c != null) {
c.moveToFirst();
}
return c;
}
/////////////////////////////////////////////////////////////////////
// Private Helper Classes:
/////////////////////////////////////////////////////////////////////
/**
* Private class which handles database creation and upgrading.
* Used to handle low-level database access.
*/
private static class DatabaseHelper extends SQLiteOpenHelper
{
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase _db) {
_db.execSQL(DATABASE_CREATE_SQL);
}
@Override
public void onUpgrade(SQLiteDatabase _db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading application's database from version " + oldVersion
+ " to " + newVersion + ", which will destroy all old data!");
// Destroy old database:
_db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
// Recreate new database:
onCreate(_db);
}
}
}
可能是力量关闭正在发生......尝试共享日志... – W0rmH0le