android-forceclose使用计时器

Question

我的应用程序强制关闭，但是编译器根本没有显示任何错误，我已经提供了代码

 package my.android;

package com.google.android.gms.auth.sample.helloauth;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import java.util.Timer;
import java.util.TimerTask;

public class HelloActivity extends Activity {
    /** Called when the activity is first created. */
    int time;
    TextView tv;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        time = 0;
        Timer t = new Timer();

        t.scheduleAtFixedRate(new TimerTask() {

            public void run() {
                runOnUiThread(new Runnable() {
                    public void run() {
                        tv = (TextView) findViewById(R.id.tvDisplay);

                        tv.setText(time);
                        time += 1;
                    }
                });
            }
        }, 0, 10000);
    }
}

Answer 1

SetText方法请求一个字符串参数。尝尝这个

tv.setText(String.valueOf(time));

Answer 2

在创建timer after setContentView(R.layout.main);的对象之前移动此行

tv = (TextView) findViewById(R.id.tvDisplay);

和改变

tv.setText(time); 

至

tv.setText(String.valueOf(time));

因为setText()总是将String作为参数传递给int，这就是强制关闭的原因