如何增加最终的整数变量？
|
Eclipse提供了“ 0”，但是我不能增加“ 1”变量。
@Override
public void onClick(View v) {
final TextView tv = (TextView) findViewById(R.id.tvSayac);
int i = 1;
do {
try {
new Thread(new Runnable() {
public void run() {
tv.post(new Runnable() {
public void run() {
tv.setText(Integer.toString(i));
}
});
}
});
i++;
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
} while (i < 16);
}
没有找到相关结果
已邀请:
6 个回复
脖呐
的值并将其发送到函数中。室邢
public class FinalCounter { private int val; public FinalCounter(int intialVal) { val=intialVal; } public void increment(){ val++; } public void decrement(){ val--; } public int getVal(){ return val; } public static void main(String[] arg){ final FinalCounter test = new FinalCounter(0); test.increment(); // 1 test.increment(); // 2 test.increment(); // 3 test.increment(); // 4 test.increment(); // 5 test.decrement(); // 4 System.out.println(test.getVal()); // prints 4 } }目浆搽
讹巳漓把备
@Override public void onClick(View v) { final TextView tv = (TextView) findViewById(R.id.tvSayac); int i = 1; do { final int localCopy = i; // Create here a final copy of i try { new Thread(new Runnable() { public void run() { tv.post(new Runnable() { public void run() { // use here the copy tv.setText(Integer.toString(localCopy)); } }); } }).start(); // Don\'t forget to start the Thread! i++; Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } while (i < 16); }而不会增加。 我想你也想启动线程... 编辑：的确，你是对的。您必须在循环内创建本地最终副本。检查新代码。嘘崇蔡对
澳绍能
在这之前：@Override public void onClick(View v) { final TextView tv = (TextView) findViewById(R.id.tvSayac); i = 1; do { try { new Thread(new Runnable() { public void run() { tv.post(new Runnable() { public void run() { tv.setText(Integer.toString(i)); } }); } }); i++; Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } while (i < 16); }