SharedPreference未更新（更改）。请帮忙。我是首发，所以我无法理解。请解释，而不仅仅是代码。这是MainActivity.java，我需要首选项和colorPicker.java，我选择颜色。
MainActivity.java：
package com.example.alexsoft.tictactoe;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
boolean turn = true;
int color = 0;
Button A1, B1, C1, A2, B2, C2, A3, B3, C3;
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
A1 = (Button) findViewById(R.id.A1);
B1 = (Button) findViewById(R.id.B1);
C1 = (Button) findViewById(R.id.C1);
A2 = (Button) findViewById(R.id.A2);
B2 = (Button) findViewById(R.id.B2);
C2 = (Button) findViewById(R.id.C2);
A3 = (Button) findViewById(R.id.A3);
B3 = (Button) findViewById(R.id.B3);
C3 = (Button) findViewById(R.id.C3);
SharedPreferences prefs = this.getSharedPreferences(
"com.example.alexsoft.tictactoe", Context.MODE_PRIVATE);
color = prefs.getInt("com.example.alexsoft.tictactoe", R.color.colorAccent);
changeAspect(color);
}
@Override
public void onResume() {
super.onResume();
SharedPreferences prefs = this.getSharedPreferences(
"com.example.alexsoft.tictactoe", Context.MODE_PRIVATE);
color = prefs.getInt("com.example.alexsoft.tictactoe", R.color.colorAccent);
changeAspect(color);
}
@Override
public void onStop() {
super.onStop();
SharedPreferences prefs = this.getSharedPreferences(
"com.example.alexsoft.tictactoe", Context.MODE_PRIVATE);
prefs.edit().putInt("com.example.alexsoft.tictactoe", color).apply();
}
@Override
public void onBackPressed() {
// super.onBackPressed();
//Creating an alert dialog to logout
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("Do you want to exit?");
alertDialogBuilder.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
startActivity(intent);
}
});
alertDialogBuilder.setNegativeButton("No",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
}
});
//Showing the alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
menu.getItem(1).setIcon(R.mipmap.ic_cached_white_24dp);
switch(Color.rgb(Color.red(color), Color.green(color), Color.blue(color))) {
case R.color.colorPrimary:
menu.getItem(1).setIcon(R.mipmap.ic_cached_black_24dp);
case R.color.yellow:
menu.getItem(1).setIcon(R.mipmap.ic_cached_black_24dp);
case R.color.lightBlue:
menu.getItem(1).setIcon(R.mipmap.ic_cached_black_24dp);
}
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.resGame:
restartBtn();
return true;
case R.id.setAsp:
Intent it = new Intent(getBaseContext(), colorPicker.class);
startActivity(it);
return true;
case R.id.aboutBtn:
AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
alertDialog.setTitle("About");
alertDialog.setMessage("Tic Tac Toe, verison 1.0, created by Alex Sandulescu");
alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialog.show();
return true;
case R.id.resStats:
TextView xCount = (TextView) findViewById(R.id.xCount);
TextView oCount = (TextView) findViewById(R.id.oCount);
TextView roundsPlayed = (TextView) findViewById(R.id.roundsPlayed);
xCount.setText("0");
oCount.setText("0");
roundsPlayed.setText("0");
case R.id.cMode:
if (item.isChecked()) {
//item.setChecked(false);
AlertDialog nYet = new AlertDialog.Builder(MainActivity.this).create();
nYet.setMessage("Not ready yet!");
nYet.setTitle("Message");
nYet.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
nYet.show();
} else {
//item.setChecked(true);
AlertDialog nYet = new AlertDialog.Builder(MainActivity.this).create();
nYet.setMessage("Not ready yet!");
nYet.setTitle("Message");
nYet.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
nYet.show();
}
}
return false;
}
public void btnClick(View v) {
Button b = (Button) v;
if (b.isEnabled()) {
if (turn == true)
b.setText("X");
else
b.setText("0");
b.setEnabled(false);
turn = !turn;
checkForWinner();
}
}
private void checkForWinner() {
String winner = "";
boolean ok = false;
if (A1.getText().equals(B1.getText()) && A1.getText().equals(C1.getText()) && !A1.getText().equals("")) {
ok = true;
winner = A1.getText().toString();
A1.setTextColor(Color.RED);
B1.setTextColor(Color.RED);
C1.setTextColor(Color.RED);
} else if (A2.getText().equals(B2.getText()) && A2.getText().equals(C2.getText()) && !A2.getText().equals("")) {
ok = true;
winner = A2.getText().toString();
A2.setTextColor(Color.RED);
B2.setTextColor(Color.RED);
C2.setTextColor(Color.RED);
} else if (A3.getText().equals(B3.getText()) && A3.getText().equals(C3.getText()) && !A3.getText().equals("")) {
ok = true;
winner = A3.getText().toString();
A3.setTextColor(Color.RED);
B3.setTextColor(Color.RED);
C3.setTextColor(Color.RED);
} else if (A1.getText().equals(A2.getText()) && A1.getText().equals(A3.getText()) && !A1.getText().equals("")) {
ok = true;
winner = A1.getText().toString();
A1.setTextColor(Color.RED);
A2.setTextColor(Color.RED);
A3.setTextColor(Color.RED);
} else if (B1.getText().equals(B2.getText()) && B1.getText().equals(B3.getText()) && !B1.getText().equals("")) {
ok = true;
winner = B1.getText().toString();
B1.setTextColor(Color.RED);
B2.setTextColor(Color.RED);
B3.setTextColor(Color.RED);
} else if (C1.getText().equals(C2.getText()) && C1.getText().equals(C3.getText()) && !C1.getText().equals("")) {
ok = true;
winner = C1.getText().toString();
C1.setTextColor(Color.RED);
C2.setTextColor(Color.RED);
C3.setTextColor(Color.RED);
} else if (A1.getText().equals(B2.getText()) && A1.getText().equals(C3.getText()) && !A1.getText().equals("")) {
ok = true;
winner = A1.getText().toString();
A1.setTextColor(Color.RED);
B2.setTextColor(Color.RED);
C3.setTextColor(Color.RED);
} else if (A3.getText().equals(B2.getText()) && A3.getText().equals(C1.getText()) && !A3.getText().equals("")) {
ok = true;
winner = A3.getText().toString();
A3.setTextColor(Color.RED);
B2.setTextColor(Color.RED);
C1.setTextColor(Color.RED);
}
if (ok) {
Toast.makeText(this, winner + " won!", Toast.LENGTH_LONG).show();
if (winner.equals("X")) {
TextView tcount = (TextView) findViewById(R.id.xCount);
tcount.setText(Integer.toString(Integer.parseInt(tcount.getText().toString()) + 1));
} else {
TextView tcount = (TextView) findViewById(R.id.oCount);
tcount.setText(Integer.toString(Integer.parseInt(tcount.getText().toString()) + 1));
}
A1.setEnabled(false);
B1.setEnabled(false);
C1.setEnabled(false);
A2.setEnabled(false);
B2.setEnabled(false);
C2.setEnabled(false);
A3.setEnabled(false);
B3.setEnabled(false);
C3.setEnabled(false);
}
}
public void restartBtn() {
remakeGame();
TextView rplayed = (TextView) findViewById(R.id.roundsPlayed);
rplayed.setText(Integer.toString(Integer.parseInt(rplayed.getText().toString()) + 1));
}
private void remakeGame() {
A1.setText("");
B1.setText("");
C1.setText("");
A2.setText("");
B2.setText("");
C2.setText("");
A3.setText("");
B3.setText("");
C3.setText("");
//
A1.setTextColor(Color.BLACK);
B1.setTextColor(Color.BLACK);
C1.setTextColor(Color.BLACK);
A2.setTextColor(Color.BLACK);
B2.setTextColor(Color.BLACK);
C2.setTextColor(Color.BLACK);
A3.setTextColor(Color.BLACK);
B3.setTextColor(Color.BLACK);
C3.setTextColor(Color.BLACK);
//
A1.setEnabled(true);
B1.setEnabled(true);
C1.setEnabled(true);
A2.setEnabled(true);
B2.setEnabled(true);
C2.setEnabled(true);
A3.setEnabled(true);
B3.setEnabled(true);
C3.setEnabled(true);
//
turn = true;
}
public void changeAspect(int color) {
if (color != 0) {
A1.setBackgroundColor(color);
B1.setBackgroundColor(color);
C1.setBackgroundColor(color);
A2.setBackgroundColor(color);
B2.setBackgroundColor(color);
C2.setBackgroundColor(color);
A3.setBackgroundColor(color);
B3.setBackgroundColor(color);
C3.setBackgroundColor(color);
getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_TITLE);
getSupportActionBar().setBackgroundDrawable(new ColorDrawable(color));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
float[] hsv = new float[3];
Color.colorToHSV(color, hsv);
hsv[2] *= 0.8f;
color = Color.HSVToColor(hsv);
window.setStatusBarColor(color);
}
}
}
}
colorPicker.java：
package com.example.alexsoft.tictactoe;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
public class colorPicker extends Activity {
public int color = 0;
String xCount, oCount, roundsPlayed;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_color_picker);
}
public void onColorConfirm(View v) {
ImageView img = (ImageView) v;
ColorDrawable s = (ColorDrawable) img.getDrawable();
SharedPreferences prefs = this.getSharedPreferences(
"com.example.alexsoft.tictactoe", Context.MODE_PRIVATE);
SharedPreferences.Editor ed = prefs.edit();
ed.putInt("com.example.alexsoft.tictactoe", color).apply();
finish();
}
@Override
public void onStop() {
super.onStop();
SharedPreferences prefs = this.getSharedPreferences(
"com.example.alexsoft.tictactoe", Context.MODE_PRIVATE);
prefs.edit().putInt("com.example.alexsoft.tictactoe", color).apply();
}
}
答案 0 :(得分：0)
问题是您没有在color活动中的任何位置更新colorPicker的值。 color的值始终为0。
<强> SOLUTION：
在将color存储到SharedPreferences之前更新public class colorPicker extends Activity {
public int color = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_color_picker);
}
public void onColorConfirm(View v) {
ImageView img = (ImageView) v;
ColorDrawable s = (ColorDrawable) img.getDrawable();
SharedPreferences prefs = this.getSharedPreferences(
"com.example.alexsoft.tictactoe", Context.MODE_PRIVATE);
SharedPreferences.Editor ed = prefs.edit();
// Update color value
color = SOME_VALUE;
// Store
ed.putInt("com.example.alexsoft.tictactoe", color).apply();
finish();
}
}
。
更新您的代码，如下所示：
Giochi::select('giocos.*')
->with('Review','InfoGiochi')
->leftJoin('reviews', 'reviews.id', '=', 'giocos.id_gioco')
->orderBy('reviews.id','DESC')
->get();
希望这会有所帮助〜