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我做這個啤酒/飲料應用程序作爲一個有趣的項目。我檢查了網站,找不到任何與我的問題相關的問題。我非常感謝兩件事情的幫助;重置按鈕到一個計數和切換選項卡android studio
我想一個按鈕復位無論計數到達這個代碼,我似乎無法找出我需要什麼..
的countButton是啤酒和drinkButton是,好耶,飲料。
public class Activity2 extends AppCompatActivity {
// Private member field to keep track of the count
private int mCount = 0;
private int mSum = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_2);
final TextView countTextView = (TextView) findViewById(R.id.TextViewCount);
final TextView sumTextView = (TextView) findViewById(R.id.textSum);
final ImageButton countButton = (ImageButton) findViewById(R.id.beerCount);
final ImageButton drinkButton = (ImageButton) findViewById(R.id.drinkCount);
countButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mCount++;
mSum += 72;
countTextView.setText("You have been drinking " + mCount + " units!");
sumTextView.setText("Sum:" + mSum + "!");
}
});
drinkButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mCount++;
mSum += 96;
countTextView.setText("You have been drinking " + mCount + " units!");
sumTextView.setText("Sum:" + mSum + "!");
}
});
此外,當我通過標籤在應用程序切換計數並刪除自身,任何想法,使之留下來,只能通過復位按鈕,清除?
非常感謝您的幫助!
你需要重置mCount或mSum嗎? –
我需要重置mSum – user3302037
和mSum聲明在哪裏? –