这是带有开关案例代码的源代码。但是粗体部分没有用。我尝试在按下按钮 D、按钮 O 和按钮 G 后使“下一个”可见。仅供参考，“下一步”是一个按钮。所以它使用三个条件来发出一个命令。怎么可能工作？我把那个代码放错地方了吗？
package com.example.fun;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
import android.widget.Button;
public class DogActivity extends Activity {
Button buttonA;
Button buttonB;
Button buttonC;
Button buttonD;
Button buttonE;
Button buttonF;
Button buttonG;
Button buttonH;
Button buttonI;
Button buttonJ;
Button buttonK;
Button buttonL;
Button buttonM;
Button buttonN;
Button buttonO;
Button buttonP;
Button buttonQ;
Button buttonR;
Button buttonS;
Button buttonT;
Button buttonU;
Button buttonV;
Button buttonX;
Button buttonW;
Button buttonY;
Button buttonZ;
Button next;
Intent i;
TextView txtD;
TextView txtO;
TextView txtG;
int life=3;
TextView nyaw;
TextView nyaw2;
TextView nyaw3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dog);
buttonA = (Button)findViewById(R.id.buttonAbout);
buttonB = (Button)findViewById(R.id.buttonhelp);
buttonC = (Button)findViewById(R.id.buttonc);
buttonD = (Button)findViewById(R.id.buttond);
buttonE = (Button)findViewById(R.id.buttonE);
buttonF = (Button)findViewById(R.id.buttonf);
buttonG = (Button)findViewById(R.id.buttong);
buttonH = (Button)findViewById(R.id.buttonh);
buttonI = (Button)findViewById(R.id.buttoni);
buttonJ = (Button)findViewById(R.id.buttonj);
buttonK = (Button)findViewById(R.id.buttonk);
buttonL = (Button)findViewById(R.id.buttonl);
buttonM = (Button)findViewById(R.id.buttonm);
buttonN = (Button)findViewById(R.id.buttonn);
buttonO = (Button)findViewById(R.id.buttono);
buttonP = (Button)findViewById(R.id.buttonp);
buttonQ = (Button)findViewById(R.id.buttonq);
buttonR = (Button)findViewById(R.id.buttonr);
buttonS = (Button)findViewById(R.id.buttons);
buttonT = (Button)findViewById(R.id.buttont);
buttonU = (Button)findViewById(R.id.buttonu);
buttonV = (Button)findViewById(R.id.buttonv);
buttonW = (Button)findViewById(R.id.buttonw);
buttonX = (Button)findViewById(R.id.buttonx);
buttonY = (Button)findViewById(R.id.buttony);
buttonZ = (Button)findViewById(R.id.buttonz);
next = (Button)findViewById(R.id.buttonnext);
txtD = (TextView)findViewById(R.id.textViewD);
txtO = (TextView)findViewById(R.id.textViewO);
txtG = (TextView)findViewById(R.id.textViewG);
nyaw = (TextView)findViewById(R.id.nyawa);
nyaw2 = (TextView)findViewById(R.id.nyawa2);
nyaw3 = (TextView)findViewById(R.id.nyawa3);
buttonA.setOnClickListener(myOnlyhandler);
buttonB.setOnClickListener(myOnlyhandler);
buttonC.setOnClickListener(myOnlyhandler);
buttonD.setOnClickListener(myOnlyhandler);
buttonE.setOnClickListener(myOnlyhandler);
buttonF.setOnClickListener(myOnlyhandler);
buttonG.setOnClickListener(myOnlyhandler);
buttonH.setOnClickListener(myOnlyhandler);
buttonI.setOnClickListener(myOnlyhandler);
buttonJ.setOnClickListener(myOnlyhandler);
buttonK.setOnClickListener(myOnlyhandler);
buttonL.setOnClickListener(myOnlyhandler);
buttonM.setOnClickListener(myOnlyhandler);
buttonN.setOnClickListener(myOnlyhandler);
buttonO.setOnClickListener(myOnlyhandler);
buttonP.setOnClickListener(myOnlyhandler);
buttonQ.setOnClickListener(myOnlyhandler);
buttonR.setOnClickListener(myOnlyhandler);
buttonS.setOnClickListener(myOnlyhandler);
buttonT.setOnClickListener(myOnlyhandler);
buttonU.setOnClickListener(myOnlyhandler);
buttonV.setOnClickListener(myOnlyhandler);
buttonW.setOnClickListener(myOnlyhandler);
buttonX.setOnClickListener(myOnlyhandler);
buttonY.setOnClickListener(myOnlyhandler);
buttonZ.setOnClickListener(myOnlyhandler);
next.setOnClickListener(myOnlyhandler);
}
View.OnClickListener myOnlyhandler = new View.OnClickListener() {
public void onClick(View v) {
if( buttonD.getId() == ((Button)v).getId() ){
txtD.setVisibility(View.VISIBLE);
}
else if( buttonO.getId() == ((Button)v).getId() ){
txtO.setVisibility(View.VISIBLE);
}
else if( buttonG.getId() == ((Button)v).getId() ){
txtG.setVisibility(View.VISIBLE);
}
else if( next.getId() == ((Button)v).getId() ){
i = new Intent(DogActivity.this, HouseActivity.class);
startActivity(i);
}
else{
MediaPlayer mp = MediaPlayer.create(getApplicationContext(), R.raw.no);
mp.start();
life--;
Log.i("Current Life Value is",""+life);
switch (life) {
case 2:
nyaw.setVisibility(View.INVISIBLE);
break;
case 1:
nyaw2.setVisibility(View.INVISIBLE);
break;
case 0:
nyaw3.setVisibility(View.INVISIBLE);
i = new Intent(DogActivity.this, TamatActivity.class);
startActivity(i);
break;
}
}
}
};
**private boolean clickedBtnD;
private boolean clickedBtnO;
private boolean clickedBtnG;
public void onClick(View v) {
final int id = v.getId();
switch(id) {
case R.id.buttond:
clickedBtnD = true;
txtD.setVisibility(View.VISIBLE);
break;
case R.id.buttono:
clickedBtnO = true;
txtO.setVisibility(View.VISIBLE);
break;
case R.id.buttong:
clickedBtnG = true;
txtG.setVisibility(View.VISIBLE);
break;
case R.id.buttonnext:
if(clickedBtnD && clickedBtnO && clickedBtnG) {
next.setVisibility(View.VISIBLE);
}
break;
}
}**
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.dog, menu);
return false;
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
i = new Intent(DogActivity.this, LevelActivity.class);
startActivity(i);
}
return super.onKeyDown(keyCode, event);
}
}