我想使具有增加每次在onStart功能的計數器的應用程式implimented的setText崩潰的應用程序
package com.example.android.lifecycle;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import com.example.android.lifecycle.util.StatusTracker;
import com.example.android.lifecycle.util.Utils;
import static com.example.android.lifecycle.R.layout.activity_a;
public class ActivityA extends Activity{
private String mActivityName;
private TextView mStatusView;
private TextView mStatusAllView;
private StatusTracker mStatusTracker = StatusTracker.getInstance();
int count = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(activity_a);
mActivityName = getString(R.string.activity_a);
mStatusView = (TextView)findViewById(R.id.status_view_a);
mStatusAllView = (TextView)findViewById(R.id.status_view_all_a);
mStatusTracker.setStatus(mActivityName, getString(R.string.on_create));
Utils.printStatus(mStatusView, mStatusAllView);
TextView DisplayText = (TextView) findViewById(R.id.count_id);
count ++;
DisplayText.setText(count);
}
@Override
protected void onResume() {
super.onResume();
mStatusTracker.setStatus(mActivityName, getString(R.string.on_resume));
Utils.printStatus(mStatusView, mStatusAllView);
}
最後一行「DisplayText.setText(計數);」崩潰的應用程序 真的很感激,如果有人幫助我。
後你logcat的。 –