我按照教程开发了一个用户注册表。通过遵循该代码，我创建了另一个表调用客户端并创建了其他相关类。但是一旦我点击保存按钮，我的应用程序就停止工作了。我尝试了很多来修复这个错误，但它不起作用。如果有人可以帮助我找到这个问题，我非常感谢您的帮助。谢谢你
这是 activity_client.xml 文件。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/nestedScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorBackground"
android:paddingBottom="20dp"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:paddingTop="20dp">
<android.support.v7.widget.LinearLayoutCompat
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start"
android:layout_marginTop="0dp"
android:text="@string/subhead"
android:textSize="30sp"
android:textStyle="bold" />
<!--Company Name-->
<android.support.design.widget.TextInputLayout
android:id="@+id/textInputLayoutCmpyName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp">
<android.support.design.widget.TextInputEditText
android:id="@+id/textInputEditTextCmpyName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/hintCmpyName"
android:inputType="text"
android:maxLines="1"
android:textColor="@android:color/black" />
</android.support.design.widget.TextInputLayout>
<!--Address-->
<android.support.design.widget.TextInputLayout
android:id="@+id/textInputLayoutCmpyAddress"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp">
<android.support.design.widget.TextInputEditText
android:id="@+id/textInputEditTextAddress"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/hintCmpyAddress"
android:inputType="text"
android:maxLines="5"
android:textColor="@android:color/black" />
</android.support.design.widget.TextInputLayout>
<!--Mobile-->
<android.support.design.widget.TextInputLayout
android:id="@+id/textInputLayoutCmpyMobile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp">
<android.support.design.widget.TextInputEditText
android:id="@+id/textInputEditTextMobile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/hintClientMobile"
android:inputType="text"
android:maxLines="5"
android:textColor="@android:color/black" />
</android.support.design.widget.TextInputLayout>
<!--Email-->
<android.support.design.widget.TextInputLayout
android:id="@+id/textInputLayoutCmpyEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp">
<android.support.design.widget.TextInputEditText
android:id="@+id/textInputEditTextEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/hintClientEmail"
android:inputType="text"
android:maxLines="5"
android:textColor="@android:color/black" />
</android.support.design.widget.TextInputLayout>
</android.support.v7.widget.LinearLayoutCompat>
<android.support.v7.widget.AppCompatButton
android:id="@+id/appCompatButtonBack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_gravity="right"
android:layout_marginBottom="357dp"
android:layout_marginEnd="36dp"
android:layout_marginRight="36dp"
android:background="@color/colorTextHint"
android:text="@string/text_back" />
<!--save button-->
<android.support.v7.widget.AppCompatButton
android:id="@+id/appCompatButtonSave"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/appCompatButtonBack"
android:layout_alignBottom="@+id/appCompatButtonBack"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="38dp"
android:layout_marginStart="38dp"
android:background="@color/colorTextHint"
android:text="@string/text_save" />
</RelativeLayout>
DataBaseHelper class in an package call dbclasses. Yhis class has code for both ClentInfo class and UserRegister class;another class.
公共(public)类 DataBaseHelper 扩展了 SQLiteOpenHelper {
//Database version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "Database1.db";
//table names
private static final String TABLE_USER = "user"; // User table name
private static final String TABLE_CLIENT = "client";
//Client Table Columns names
private static final String COLUMN_CLIENT_ID = "client_id";
private static final String COLUMN_CLIENT_NAME = "client_name";
private static final String COLUMN_CLIENT_ADDRESS = "client_address";
private static final String COLUMN_CLIENT_MOBILE = "client_mobile";
private static final String COLUMN_CLIENT_EMAIL = "client_email";
//create client table
private String CREATE_CLIENT_TABLE = "CREATE TABLE " + TABLE_CLIENT + "("
+ COLUMN_CLIENT_ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"
+ COLUMN_CLIENT_NAME + " TEXT,"
+ COLUMN_CLIENT_ADDRESS + " TEXT,"
+ COLUMN_CLIENT_MOBILE + " TEXT,"
+ COLUMN_CLIENT_EMAIL + " TEXT"
+ ")";
// drop table sql query
private String DROP_USER_TABLE = "DROP TABLE IF EXISTS " + TABLE_USER; //for user table
private String DROP_CLIENT_TABLE = "DROP TABLE IF EXISTS " + TABLE_CLIENT;
public DataBaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(CREATE_USER_TABLE);
db.execSQL(CREATE_CLIENT_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int i, int i1) {
db.execSQL(DROP_USER_TABLE);
db.execSQL(DROP_CLIENT_TABLE);
//create new tables
onCreate(db);
}
//---------------------------client table methods--------------------
//add user
public void addClient(Client client) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(COLUMN_CLIENT_NAME, client.getCmpyName());
values.put(COLUMN_CLIENT_ADDRESS, client.getAddress());
values.put(COLUMN_CLIENT_MOBILE, client.getMobile());
values.put(COLUMN_USER_EMAIL, client.getEmail());
//Inserting Row
db.insert(TABLE_CLIENT, null, values);
db.close();
}
//get all clients
public List<Client> getAllClients() {
String columns1[] = {
COLUMN_CLIENT_ID,
COLUMN_CLIENT_NAME,
COLUMN_CLIENT_ADDRESS,
COLUMN_CLIENT_MOBILE,
COLUMN_USER_EMAIL
};
//sorting orders
String sortOrder = COLUMN_CLIENT_NAME + " ASC";
List<Client> clientList = new ArrayList<Client>();
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(TABLE_CLIENT,
columns1,
null,
null,
null,
null,
sortOrder);
if (cursor.moveToFirst()) {
do {
Client client = new Client();
client.setCid(Integer.parseInt(cursor.getString(cursor.getColumnIndex(COLUMN_CLIENT_ID))));
client.setCmpyName(cursor.getString(cursor.getColumnIndex(COLUMN_CLIENT_NAME)));
client.setAddress(cursor.getString(cursor.getColumnIndex(COLUMN_CLIENT_ADDRESS)));
client.setMobile(cursor.getString(cursor.getColumnIndex(COLUMN_CLIENT_MOBILE)));
client.setEmail(cursor.getString(cursor.getColumnIndex(COLUMN_CLIENT_EMAIL)));
//adding clients to list
clientList.add(client);
} while (cursor.moveToNext());
}
cursor.close();
db.close();
return clientList;
}
//update the clients
public void updateClient(Client client) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(COLUMN_CLIENT_NAME, client.getCmpyName());
values.put(COLUMN_CLIENT_ADDRESS, client.getAddress());
values.put(COLUMN_CLIENT_MOBILE, client.getMobile());
values.put(COLUMN_USER_EMAIL, client.getEmail());
//updating row
db.update(TABLE_CLIENT, values, COLUMN_CLIENT_ID + " = ?",
new String[]{
String.valueOf(client.getCid())
});
db.close();
}
public boolean checkClient(String cmpyName) {
String[] columns = {
COLUMN_CLIENT_ID
};
SQLiteDatabase db = this.getReadableDatabase();
String selection = COLUMN_CLIENT_NAME + " = ?";
// selection argument
String[] selectionArgs = {cmpyName};
Cursor cursor = db.query(TABLE_CLIENT, //Table to query
columns, //columns to return
selection, //columns for the WHERE clause
selectionArgs, //The values for the WHERE clause
null, //group the rows
null, //filter by row groups
null); //The sort order
int cursorCount = cursor.getCount();
cursor.close();
db.close();
if (cursorCount > 0) {
return true;
}
return false;
}
}
这是Client包中的ClientActivity类
package com.example.user.application001.Client;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TextInputEditText;
import android.support.design.widget.TextInputLayout;
import android.support.v4.widget.NestedScrollView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.AppCompatButton;
import android.view.View;
import android.widget.Toast;
import com.example.user.application001.R;
import dbclasses.DataBaseHelper;
import modelclasses.Client;
public class ClientActivity extends AppCompatActivity implements View.OnClickListener {
private final AppCompatActivity activity = ClientActivity.this;
private DataBaseHelper dbHelper;
private ClientValidation clientValidation;
private Client client;
//private NestedScrollView nestedScrollView;
private TextInputLayout textInputLayoutCmpyName, textInputLayoutCmpyAddress, textInputLayoutCmpyMobile, textInputLayoutCmpyEmail;
private TextInputEditText textInputEditTextCmpyName, textInputEditTextAddress, textInputEditTextMobile, textInputEditTextEmail;
private AppCompatButton appCompatButtonSave, appCompatButtonBack;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_client);
setTitle("Customer Information");
initViews();
initListeners();
initObjects();
}
public void initViews() {
//nestedScrollView = (NestedScrollView) findViewById(R.id.nestedScrollView);
textInputLayoutCmpyName = (TextInputLayout) findViewById(R.id.textInputLayoutCmpyName);
textInputLayoutCmpyAddress = (TextInputLayout) findViewById(R.id.textInputLayoutCmpyAddress);
textInputLayoutCmpyMobile = (TextInputLayout) findViewById(R.id.textInputLayoutCmpyMobile);
textInputLayoutCmpyEmail = (TextInputLayout) findViewById(R.id.textInputLayoutCmpyEmail);
textInputEditTextCmpyName = (TextInputEditText) findViewById(R.id.textInputEditTextCmpyName);
textInputEditTextAddress = (TextInputEditText) findViewById(R.id.textInputEditTextAddress);
textInputEditTextMobile = (TextInputEditText) findViewById(R.id.textInputEditTextMobile);
textInputEditTextEmail = (TextInputEditText) findViewById(R.id.textInputEditTextEmail);
appCompatButtonSave = (AppCompatButton) findViewById(R.id.appCompatButtonSave);
appCompatButtonBack = (AppCompatButton) findViewById(R.id.appCompatButtonBack);
}
public void initListeners() {
appCompatButtonBack.setOnClickListener(this);
appCompatButtonSave.setOnClickListener(this);
}
public void initObjects() {
clientValidation = new ClientValidation(activity);
dbHelper = new DataBaseHelper(activity);
client = new Client();
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.appCompatButtonSave:
savetoSQliteDb();
break;
case R.id.appCompatButtonBack:
break;
}
}
private void savetoSQliteDb(){
if (!clientValidation.isInputEditTextFilled(textInputEditTextCmpyName, textInputLayoutCmpyName, getString(R.string.errorCmpyName))){
return;
}
if (!clientValidation.isInputEditTextFilled(textInputEditTextAddress, textInputLayoutCmpyAddress, getString(R.string.errorCmpyAddress))){
return;
}
if (!clientValidation.isInputEditTextFilled(textInputEditTextMobile, textInputLayoutCmpyMobile, getString(R.string.errorCustomerMobile))){
return;
}if (!clientValidation.isInputEditTextFilled(textInputEditTextEmail, textInputLayoutCmpyEmail, getString(R.string.errorCustomerEmail))){
return;
}
if (!dbHelper.checkClient(textInputEditTextCmpyName.getText().toString())){
client.setCmpyName(textInputEditTextCmpyName.getText().toString().trim());
client.setAddress(textInputEditTextAddress.getText().toString().trim());
client.setMobile(textInputEditTextMobile.getText().toString().trim());
client.setEmail(textInputEditTextEmail.getText().toString().trim());
//add one record
dbHelper.addClient(client);
emptyInputEditText();
// Toast.makeText(getApplicationContext(), "Data Entered", Toast.LENGTH_LONG).show();
}
}
private void emptyInputEditText() {
textInputEditTextCmpyName.setText(null);
textInputEditTextAddress.setText(null);
textInputEditTextMobile.setText(null);
textInputEditTextEmail.setText(null);
}
}
This is the ClientValidation Java class. This is also in the client package
package com.example.user.application001.Client;
import android.app.Activity;
import android.content.Context;
import android.support.design.widget.TextInputEditText;
import android.support.design.widget.TextInputLayout;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
/**
* Created by User on 9/28/2017.
*/
public class ClientValidation {
private Context context;
public ClientValidation(Context context) {
this.context = context;
}
public boolean isInputEditTextFilled(TextInputEditText textInputEditText, TextInputLayout textInputLayout, String message) {
String value = textInputEditText.getText().toString().trim();
if (value.isEmpty()) {
textInputLayout.setError(message);
hideKeyboardFrom(textInputEditText);
return false;
} else {
textInputLayout.setErrorEnabled(false);
}
return true;
}
private void hideKeyboardFrom(View view) {
InputMethodManager imm = (InputMethodManager) context.getSystemService(Activity.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
}
}
This is the Client class. It is in modelclasses package.
package modelclasses;
/**
* Created by User on 9/26/2017.
*/
public class Client {
private int cid;
private String cmpyName;
private String address;
private String mobile;
private String email;
public int getCid() {
return cid;
}
public void setCid(int cid) {
this.cid = cid;
}
public String getCmpyName() {
return cmpyName;
}
public void setCmpyName(String cmpyName) {
this.cmpyName = cmpyName;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getMobile() {
return mobile;
}
public void setMobile(String mobile) {
this.mobile = mobile;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
日志
/split_lib_slice_3_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.example.user.application001-2@split_lib_slice_3_apk.apk@classes.dex) because non-0 exit status
09-29 08:29:01.252 4993-4993/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.example.user.application001-2/split_lib_slice_4_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.example.user.application001-2@split_lib_slice_4_apk.apk@classes.dex) because non-0 exit status
09-29 08:29:01.264 4993-4993/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.example.user.application001-2/split_lib_slice_5_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.example.user.application001-2@split_lib_slice_5_apk.apk@classes.dex) because non-0 exit status
09-29 08:29:01.276 4993-4993/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.example.user.application001-2/split_lib_slice_6_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.example.user.application001-2@split_lib_slice_6_apk.apk@classes.dex) because non-0 exit status
09-29 08:29:01.290 4993-4993/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.example.user.application001-2/split_lib_slice_7_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.example.user.application001-2@split_lib_slice_7_apk.apk@classes.dex) because non-0 exit status
09-29 08:29:01.305 4993-4993/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.example.user.application001-2/split_lib_slice_8_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.example.user.application001-2@split_lib_slice_8_apk.apk@classes.dex) because non-0 exit status
09-29 08:29:01.317 4993-4993/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.example.user.application001-2/split_lib_slice_9_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.example.user.application001-2@split_lib_slice_9_apk.apk@classes.dex) because non-0 exit status
09-29 08:29:01.318 4993-4993/? W/System: ClassLoader referenced unknown path: /data/app/com.example.user.application001-2/lib/x86
09-29 08:29:01.320 4993-4993/? I/InstantRun: starting instant run server: is main process
09-29 08:29:01.384 4993-4993/? W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
09-29 08:29:01.495 4993-5038/? D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
[ 09-29 08:29:01.497 4993: 4993 D/ ]
HostConnection::get() New Host Connection established 0xa4187280, tid 4993
[ 09-29 08:29:01.498 4993: 4993 W/ ]
Unrecognized GLES max version string in extensions: ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_dma_v1
[ 09-29 08:29:01.523 4993: 5038 D/ ]
HostConnection::get() New Host Connection established 0xaaffbd40, tid 5038
[ 09-29 08:29:01.524 4993: 5038 W/ ]
Unrecognized GLES max version string in extensions: ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_dma_v1
09-29 08:29:01.526 4993-5038/? I/OpenGLRenderer: Initialized EGL, version 1.4
09-29 08:29:01.526 4993-5038/? W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
09-29 08:29:01.534 4993-5038/? D/EGL_emulation: eglCreateContext: 0xaf0635a0: maj 2 min 0 rcv 2
09-29 08:29:01.535 4993-5038/? D/EGL_emulation: eglMakeCurrent: 0xaf0635a0: ver 2 0 (tinfo 0xaf0528e0)
09-29 08:29:01.554 4993-5038/? D/EGL_emulation: eglMakeCurrent: 0xaf0635a0: ver 2 0 (tinfo 0xaf0528e0)
09-29 08:29:01.610 4993-4993/? W/art: Before Android 4.1, method int android.support.v7.widget.ListViewCompat.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
最佳答案
尝试禁用即时运行，直到您熟悉 Android，这个特殊问题似乎来自即时运行，它在最新的稳定版本 (2.3.3) 中还不太稳定:
简而言之，打开 Android Studio 设置，在搜索框中键入 instant run 并将其禁用。
这个问题包括如何去做:Instant run in Android Studio 2.0 (how to turn off)
关于android - 在具有多个表的 Android Sqlite 数据库中保存数据时出现问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46481580/