package com.harshil.home.tictac;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
int c[][];
int i, j, k = 0;
Button b[][];
TextView textView;
int player = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setBoard();
}
private void setBoard() {
b = new Button[4][4];
c = new int[4][4];
b[1][1] = (Button) findViewById(R.id.one);
b[1][2] = (Button) findViewById(R.id.two);
b[1][3] = (Button) findViewById(R.id.three);
b[2][1] = (Button) findViewById(R.id.four);
b[2][2] = (Button) findViewById(R.id.five);
b[2][3] = (Button) findViewById(R.id.six);
b[3][1] = (Button) findViewById(R.id.seven);
b[3][2] = (Button) findViewById(R.id.eight);
b[3][3] = (Button) findViewById(R.id.nine);
for (i = 1; i <= 3; i++) {
for (j = 1; j <= 3; j++)
c[i][j] = 2;
}
textView.setText("Click a button to start");
//adding onclickevent for each buttons
for (i = 1; i <= 3; i++) {
for (j = 1; j <= 3; j++) {
b[i][j].setOnClickListener(new MyClickListener(i, j));
if (!b[i][j].isEnabled()) {
b[i][j].setText("");
b[i][j].setEnabled(true);
}
}
}
}
class MyClickListener implements View.OnClickListener {
int x;
int y;
public MyClickListener(int x, int y) {
this.x = x;
this.y = y;
}
public void onClick(View view) {
textView.setText("Another player's Turn");
if ((b[x][y].isEnabled())) {
b[x][y].setEnabled(false);
b[x][y].setText("O");
c[x][y] = 0;
textView.setText("");
if (!checkBoard()) {
if ((b[x][y].isEnabled())) {
b[x][y].setEnabled(false);
b[x][y].setText("X");
c[x][y] = 0;
textView.setText("");
}
}
}
}
private boolean checkBoard() {
boolean gameOver = false;
if ((c[1][1] == 0 && c[2][2] == 0 && c[3][3] == 0)
|| (c[1][3] == 0 && c[2][2] == 0 && c[3][1] == 0)
|| (c[1][2] == 0 && c[2][2] == 0 && c[3][2] == 0)
|| (c[1][3] == 0 && c[2][3] == 0 && c[3][3] == 0)
|| (c[1][1] == 0 && c[1][2] == 0 && c[1][3] == 0)
|| (c[2][1] == 0 && c[2][2] == 0 && c[2][3] == 0)
|| (c[3][1] == 0 && c[3][2] == 0 && c[3][3] == 0)
|| (c[1][1] == 0 && c[2][1] == 0 && c[3][1] == 0)) {
textView.setText("Game over. player 1 wins!");
gameOver = true;
} else if ((c[1][1] == 1 && c[2][2] == 1 && c[3][3] == 1)
|| (c[1][3] == 1 && c[2][2] == 1 && c[3][1] == 1)
|| (c[1][2] == 1 && c[2][2] == 1 && c[3][2] == 1)
|| (c[1][3] == 1 && c[2][3] == 1 && c[3][3] == 1)
|| (c[1][1] == 1 && c[1][2] == 1 && c[1][3] == 1)
|| (c[2][1] == 1 && c[2][2] == 1 && c[2][3] == 1)
|| (c[3][1] == 1 && c[3][2] == 1 && c[3][3] == 1)
|| (c[1][1] == 1 && c[2][1] == 1 && c[3][1] == 1)) {
textView.setText("Game over. player 2 wins!");
gameOver = true;
} else {
boolean empty = false;
for (i = 1; i <= 3; i++) {
for (j = 1; j <= 3; j++) {
if (c[i][j] == 2) {
empty = true;
break;
}
}
}
if (!empty) {
gameOver = true;
textView.setText("Game over. It's a draw!");
}
}
return gameOver;
}
}
}
我试图修改2名球员，但遗憾的是， 构建成功但仍然崩溃！我是否忘记更改 AndroidManifest.xml 文件中的任何内容？
错误是
09-13 21:26:37.043 3730-3730/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.harshil.home.tictac, PID: 3730
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.harshil.home.tictac/com.harshil.home.tictac.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.harshil.home.tictac.MainActivity" on path: DexPathList[[zip file "/data/app/com.harshil.home.tictac-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2236)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.harshil.home.tictac.MainActivity" on path: DexPathList[[zip file "/data/app/com.harshil.home.tictac-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.app.Instrumentation.newActivity(Instrumentation.java:1066)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2226)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Suppressed: java.lang.NoClassDefFoundError: com.harshil.home.tictac.MainActivity
at dalvik.system.DexFile.defineClassNative(Native Method)
at dalvik.system.DexFile.defineClass(DexFile.java:226)
at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)
at dalvik.system.DexPathList.findClass(DexPathList.java:321)
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
... 14 more
Suppressed: java.lang.ClassNotFoundException: com.harshil.home.tictac.MainActivity
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 13 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
09-13 21:26:39.082 3730-3730/? I/Process: Sending signal. PID: 3730 SIG: 9
清单文件是：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.harshil.home.tictac">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
答案 0 :(得分：0)
package com.harshil.home.tictac;
import android.app.Activity;
import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
int c[][];
int i, j, k = 0;
Button b[][];
TextView textView;
int player=2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setBoard();
}
private void setBoard() {
b = new Button[4][4];
c = new int[4][4];
b[1][1] = (Button) findViewById(R.id.one);
b[1][2] = (Button) findViewById(R.id.two);
b[1][3] = (Button) findViewById(R.id.three);
b[2][1] = (Button) findViewById(R.id.four);
b[2][2] = (Button) findViewById(R.id.five);
b[2][3] = (Button) findViewById(R.id.six);
b[3][1] = (Button) findViewById(R.id.seven);
b[3][2] = (Button) findViewById(R.id.eight);
b[3][3] = (Button) findViewById(R.id.nine);
for (i = 1; i <= 3; i++) {
for (j = 1; j <= 3; j++)
c[i][j] = 2;
}
//adding onclickevent for each buttons
for (i = 1; i <= 3; i++) {
for (j = 1; j <= 3; j++) {
b[i][j].setOnClickListener(new MyClickListener(i, j));
if (!b[i][j].isEnabled()) {
b[i][j].setText("");
b[i][j].setEnabled(true);
}
}
}
}
class MyClickListener implements View.OnClickListener {
int x;
int y;
public MyClickListener(int x, int y) {
this.x = x;
this.y = y;
}
public void onClick(View view) {
if (player==2){
if (b[x][y].isEnabled()) {
b[x][y].setEnabled(false);
b[x][y].setText("O");
c[x][y] = 0;
player++;
if (checkBoard()){
player=4;
Toast.makeText(getApplicationContext(),"player O
won",Toast.LENGTH_SHORT).show();
}
}
}
if(player==3){
if (b[x][y].isEnabled()) {
b[x][y].setEnabled(false);
b[x][y].setText("X");
c[x][y] = 1;
player=2;
if (checkBoard()){
player=5;
Toast.makeText(getApplicationContext(),"player X
won",Toast.LENGTH_SHORT).show();
}
}
}
}
}
private boolean checkBoard() {
boolean gameOver = false;
if ((c[1][1] == 0 && c[2][2] == 0 && c[3][3] == 0)
|| (c[1][3] == 0 && c[2][2] == 0 && c[3][1] == 0)
|| (c[1][2] == 0 && c[2][2] == 0 && c[3][2] == 0)
|| (c[1][3] == 0 && c[2][3] == 0 && c[3][3] == 0)
|| (c[1][1] == 0 && c[1][2] == 0 && c[1][3] == 0)
|| (c[2][1] == 0 && c[2][2] == 0 && c[2][3] == 0)
|| (c[3][1] == 0 && c[3][2] == 0 && c[3][3] == 0)
|| (c[1][1] == 0 && c[2][1] == 0 && c[3][1] == 0)) {
gameOver = true;
} else if ((c[1][1] == 1 && c[2][2] == 1 && c[3][3] == 1)
|| (c[1][3] == 1 && c[2][2] == 1 && c[3][1] == 1)
|| (c[1][2] == 1 && c[2][2] == 1 && c[3][2] == 1)
|| (c[1][3] == 1 && c[2][3] == 1 && c[3][3] == 1)
|| (c[1][1] == 1 && c[1][2] == 1 && c[1][3] == 1)
|| (c[2][1] == 1 && c[2][2] == 1 && c[2][3] == 1)
|| (c[3][1] == 1 && c[3][2] == 1 && c[3][3] == 1)
|| (c[1][1] == 1 && c[2][1] == 1 && c[3][1] == 1)) {
gameOver = true;
} else {
boolean empty = false;
for (i = 1; i <= 3; i++) {
for (j = 1; j <= 3; j++) {
if (c[i][j] == 2) {
empty = true;
break;
}
}
}
if (!empty) {
gameOver = true;
Toast.makeText(getApplicationContext(),"Game
Drawn",Toast.LENGTH_SHORT).show();
}
}
return gameOver;
}
}
终于搞定了！全部谢谢