活动之间的Android应用程序交换停止

Question

嘿伙计们。我是Android编程的新手。我正在尝试制作一个控制遥控车（Arduino）的应用程序。在这个应用程序是下一个活动：

1. 按钮命令
2. 倾斜命令
3. 声乐指挥
4. 说明
5. 关于

当我打开应用程序时，它会突然停止，我不知道为什么。有人可以通过查看代码帮助我，并告诉我我做错了什么。非常感谢。

Button buttonCommand;
Button tiltCommand;
Button vocalCommand;
Button instructions;
Button about;
Button arduino; // Links Button
Button android; // Links Button

public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.content_main);

    buttonCommand = (Button)findViewById(R.id.buttons);
    tiltCommand = (Button)findViewById(R.id.tilt);
    vocalCommand = (Button)findViewById(R.id.vocal);
    instructions = (Button)findViewById(R.id.instructions);
    about = (Button)findViewById(R.id.about);
    arduino = (Button)findViewById(R.id.arduino);
    android = (Button)findViewById(R.id.android);
}

public void onClickButton(View view){
    Intent i = new Intent(getApplicationContext(),ButtonCommand.class); // ButtonCommand Activity
    startActivity(i);
}

public void onClickTilt(View view){
    Intent i = new Intent(getApplicationContext(),TiltCommand.class); // TiltCommand Activity
    startActivity(i);
}

public void onClickVocal(View view){
    Intent i = new Intent(getApplicationContext(),VocalCommand.class); // VocalCommand Activity
    startActivity(i);
}

public void onClickInstructions(View view){
    Intent i = new Intent(getApplicationContext(),Instructions.class); // Instructions Activity
    startActivity(i);
}

public void onClickAbout(View view){
    Intent i = new Intent(getApplicationContext(),About.class); // About Activity
    startActivity(i);
}

public void onClickArduino(View view){
    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_VIEW);
    intent.addCategory(Intent.CATEGORY_BROWSABLE);
    intent.setData(Uri.parse("http://forum.arduino.cc/"));
    startActivity(intent);
}

public void onClickAndroid(View view){
    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_VIEW);
    intent.addCategory(Intent.CATEGORY_BROWSABLE);
    intent.setData(Uri.parse("http://forum.xda-developers.com/"));
    startActivity(intent);
}

Answer 1

如果您的应用在开始时停止，可能您错过了将您的活动注册表添加到[[RMStore defaultStore] restoreTransactionsOnSuccess:^(NSArray* transactions) { NSLocale* dateLocale = [NSLocale autoupdatingCurrentLocale]; for (SKPaymentTransaction* t in transactions) NSLog(@"%@", [t.transactionDate descriptionWithLocale: dateLocale]); } failure:^(NSError* error) { }]; ：

AndroidManifest.xml

George，您需要为每个按钮创建一个OnClickListener，例如：

   <activity android:name=".ButtonCommand" />
   <activity android:name=".TiltCommand" />
   <activity android:name=".VocalCommand" />
   <activity android:name=".Instructions" />
   <activity android:name=".About" />

Plus：以及开放网址的互联网许可：

buttonCommand = (Button)findViewById(R.id.buttons);
buttonCommand.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                      Intent i = new Intent(getApplicationContext(),ButtonCommand.class); // ButtonCommand Activity
                      startActivity(i);
                    }
                });