android_标题栏的实现方法

标题栏有很多实现方法今天介绍一种

效果图

主要是利用visibility的显示与隐藏

titlebar:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:paddingLeft="10dp"
    android:background="@color/blue"
    android:paddingRight="10dp"
    android:layout_height="50dp">
    <ImageView
        android:id="@+id/iv_home"
        android:visibility="gone"
        android:layout_centerVertical="true"
        android:src="@drawable/home"
        android:layout_width="30dp"
        android:layout_height="30dp" />
    <ImageView
        android:id="@+id/iv_back"
        android:visibility="gone"
        android:layout_centerVertical="true"
        android:src="@drawable/back"
        android:layout_width="30dp"
        android:layout_height="30dp" />
    <TextView
        android:id="@+id/tv_title"
        android:textSize="20sp"
        android:textColor="#fff"
        android:layout_centerInParent="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</RelativeLayout>

activity_main.xml:

这个页面include一下上面写好的titlebar就行

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.iamchan.titlebartest.MainActivity">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <include layout="@layout/titlebarlayout"></include>
        <ImageView
            android:onClick="doClick"
            android:id="@+id/iv_img"
            android:background="@mipmap/ic_launcher"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </LinearLayout>
</RelativeLayout>

MainActiivty:

public class MainActivity extends AppCompatActivity {



    private ImageView home;
    private TextView title;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        home= (ImageView) findViewById(R.id.iv_home);
        title= (TextView) findViewById(R.id.tv_title);
        home.setVisibility(View.VISIBLE);
        title.setText("mainActivity标题栏");
    }
    public void doClick(View view){
        if(view.getId()==R.id.iv_img){
            startActivity(new Intent(MainActivity.this,SecondActivity.class));
        }
    }
}

activity_second:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_second"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.iamchan.titlebartest.SecondActivity">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <include layout="@layout/titlebarlayout"></include>
    </LinearLayout>
</RelativeLayout>

SecondActivity:

public class SecondActivity extends AppCompatActivity {

    private ImageView back;
    private TextView title;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        back= (ImageView) findViewById(R.id.iv_back);
        title= (TextView) findViewById(R.id.tv_title);
        back.setVisibility(View.VISIBLE);
        title.setText("secondActivity标题栏");
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
    }
}