Question

我有3种不同的活动。我已经创建了菜单xml文件来构建ActionToolbar，按钮等，但对于＆＃34;后退按钮＆＃34;我已经找到了在清单中添加此类代码的决定：

android:parentActivityName=".MainActivity">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value=".MainActivity"/>

问题是如何返回以前的活动，有时不是父活动。我可以在菜单的帮助下做到这一点吗？我知道如何在那里添加后退按钮，但它将位于工具栏的行尾，而不是活动标题之前。

menu_add_task.xml：

<?xml version="1.0" encoding="utf-8"?>
<menu
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/doneTask"
        android:title="@string/doneTask"
        android:icon="@mipmap/ic_done"
        app:showAsAction="ifRoom" />

</menu>

activity_add_task.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/the_darkest_grey">
</android.support.constraint.ConstraintLayout>

AddTaskActivity类：activity，应该是一个后退按钮

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

public class AddTaskActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_task);
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.menu_add_task, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()){

            case R.id.doneTask:
                finish();
                return true;
        }
        return super.onOptionsItemSelected(item);
    }

}

Answer 1

疑难杂症。

# Varnish environment configuration description. This was derived from
# the old style sysconfig/defaults settings

# Set this to 1 to make systemd reload try to switch VCL without restart.
RELOAD_VCL=1

# Set WARMUP_TIME to force a delay in reload-vcl between vcl.load and vcl.use
# This is useful when backend probe definitions need some time before declaring
# configured backends healthy, to avoid routing traffic to a non-healthy backend.
#WARMUP_TIME=0

# Main configuration file. You probably want to change it.
VARNISH_VCL_CONF=/etc/varnish/default.vcl

# Default address and port to bind to. Blank address means all IPv4
# and IPv6 interfaces, otherwise specify a host name, an IPv4 dotted
# quad, or an IPv6 address in brackets.
VARNISH_LISTEN_ADDRESS=127.0.0.1
VARNISH_LISTEN_PORT=8081

# Admin interface listen address and port
VARNISH_ADMIN_LISTEN_ADDRESS=127.0.0.1
VARNISH_ADMIN_LISTEN_PORT=6082

# Shared secret file for admin interface
VARNISH_SECRET_FILE=/etc/varnish/secret

# Backend storage specification, see Storage Types in the varnishd(5)
# man page for details.
VARNISH_STORAGE="malloc,256M"

# User and group for the varnishd worker processes
VARNISH_USER=varnish
VARNISH_GROUP=varnish

# Other options, see the man page varnishd(1)
DAEMON_OPTS="-p thread_pool_min=5 -p thread_pool_max=500 -p thread_pool_timeout=300 -p feature=+esi_disable_xml_check,+esi_ignore_other_elements \ -p vsl_reclen=4084 \ -p vcc_allow_inline_c=on \ -p vcc_allow_inline_c=on \ -p 'cc_command=exec cc -fpic -shared -Wl,-x -o %o %s -lcrypto -lssl' \ -p workspace_client=128k \ -p shm_reclen=4084"

如何制作＆＃34;菜单＆＃34;或＆＃34;清单＆＃34;返回按钮以导航回上一个活动

1 个答案: