當按下後退按鈕時,我已經實現了我的應用程序退出。當我退出應用程序時,我通常會在應用程序正常退出之前得到最近應用程序顯示的波濤洶涌的退出。什麼可能導致這個問題?這是我的代碼。按下後退按鈕時出現Ch 0123退出
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private Button discover,why,enterprise,business,services,office,inquire,connect;
TextView offer;
Intent p;
private static long back_pressed_time;
private static long PERIOD = 2000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
offer = (TextView)findViewById(R.id.offer);
discover = (Button) findViewById(R.id.discover_us);
why = (Button) findViewById(R.id.why_us);
enterprise = (Button) findViewById(R.id.enterprise_soln);
business = (Button) findViewById(R.id.business_soln);
services = (Button) findViewById(R.id.services);
office = (Button) findViewById(R.id.office_automation);
inquire = (Button) findViewById(R.id.inquire);
connect = (Button) findViewById(R.id.connect);
}
@Override
public void onClick(View v) {
switch (v.getId())
{
case R.id.discover_us:
p = new Intent(this,DiscoverUs.class);
startActivity(p);
break;
case R.id.why_us:
p = new Intent(this,WhyTechbiz.class);
startActivity(p);
break;
case R.id.office_automation:
p = new Intent(this,Office_Automation.class);
startActivity(p);
break;
case R.id.services:
p = new Intent(this,Services.class);
startActivity(p);
break;
case R.id.enterprise_soln:
p = new Intent(this,Enterprise_Soln.class);
startActivity(p);
break;
case R.id.business_soln:
p = new Intent(this,Business_Soln.class);
startActivity(p);
break;
case R.id.inquire:
p = new Intent(this,Inquire.class);
startActivity(p);
break;
case R.id.connect:
p = new Intent(this,Connect.class);
startActivity(p);
break;
}
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
}
@Override
public void onBackPressed() {
if (back_pressed_time + PERIOD > System.currentTimeMillis()) {
super.onBackPressed();
} else {
back_pressed_time = System.currentTimeMillis();
Toast.makeText(MainActivity.this, "Press once again to exit!", Toast.LENGTH_SHORT).show();
}
}
我不認爲這段代碼是足以追查你的問題。當你點擊「返回」按鈕時,你的'Acitivity'中是否還有其他事情? –
請定義_「波濤洶涌的出口」_。 –
意思是它的意思是凍結應用程序的中間關閉,同時顯示最近的應用程序列表,然後最終退出 – HM88