【发布时间】:2016-08-16 07:11:14
【问题描述】:
我已实现我的应用程序在按下后退按钮时退出。当我退出应用程序时,我通常会在应用程序正确退出之前显示最近的应用程序的断断续续的退出。什么可能导致此问题?这是我的代码。
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();
}
}
【问题讨论】:
-
我认为这段代码不足以追踪您的问题。当您单击“返回”按钮时,您的
Acitivity中是否还有其他内容? -
请定义“断断续续的出口”。
-
断断续续的意思是它在应用程序关闭过程中冻结,同时显示最近的应用程序列表,然后最终退出
标签: android activity-finish onbackpressed