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我正在製作一個我們正在製作炸彈人遊戲的學校項目。在比賽場地上有2個炸彈人,用戶和AI。無法使用CountDownTimer類創建處理程序
當用戶放置炸彈並走開時,炸彈在時間結束時閃爍並爆炸。
但是這不適用於AI。
當AI放置了炸彈,並走開了它,當它應閃爍,然後離開這個錯誤發生爆炸的應用程序崩潰:
FATAL EXCEPTION: Timer-0
java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
的CountDownTimer
代碼如下。
public void explodeAIBomb(){
//Starts countdown 2-4 seconds
new CountDownTimer(new Random().nextInt(2000) + 2000, 300) {
//test for onTick; bomb flashes
boolean test = false;
public void onFinish() {
//on explosion{
gameBoard[locateAIX][locateAIY] = new Blast();
explosionSide(locateAIX, locateAIY);
explosionVert(locateAIX, locateAIY);
updateView();
//Clear all blasts after 1 second
new CountDownTimer(1000, 1000){
public void onFinish(){
for (int x = 0; x < XasLength + 1; x++) {
for (int y = 0; y < YasLength + 1; y++) {
if(gameBoard[x][y] != null){
if(gameBoard[x][y].getTileId() == BLAST || gameBoard[x][y].getTileId() == BLAST_SIDE || gameBoard[x][y].getTileId() == BLAST_VERT){
gameBoard[x][y] = null;
}
}
}
}
aiBombPlanted = false;
updateView();
}
@Override
public void onTick(long millisUntilFinished) {
}
}.start();
updateView();
}
//Flashes the bomb every 0.3 second
public void onTick(long millisUntilFinished) {
if(test){
loadTile(BOMB, r.getDrawable(R.drawable.bomb));
test = false;
}
else{
loadTile(BOMB, r.getDrawable(R.drawable.bomb2));
test = true;
}
updateView();
}
}.start();
}
我該如何在主線程中調用它? – Oblieapps
nvm,我明白了! thnx很多人! – Oblieapps