Toolbar的简单使用

//styles
改为NoActionBar
//布局
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width=“match_parent”
android:layout_height=“130dp”
android:layout_weight=“1”
android:background="#1b5fff"
>

</android.support.v7.widget.Toolbar>

//res/menu/menu.xml


Activity
package com.example.choujiang;

import android.annotation.SuppressLint;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements Toolbar.OnMenuItemClickListener {

private Toolbar toolbar;

@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    toolbar.setTitle("标题");
    //app的图标
    //toolbar.setLogo(R.drawable.ic_launcher_background);
    //toolbar.setNavigationIcon(R.mipmap.ic_launcher);
    //设置副标题
    toolbar.setSubtitle("德伦狗");
    //设定菜单个按钮的动作
    toolbar.setOnMenuItemClickListener(this);
    //上级按钮
    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem menuItem) {
            if (menuItem.getItemId()==R.id.action_settings){
                Toast.makeText(MainActivity.this, "打开", Toast.LENGTH_SHORT).show();
            }
            return false;
        }
    });
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_mian,menu);
    return super.onCreateOptionsMenu(menu);
}


@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()){
        case android.R.id.home:
            finish();
            break;
        case R.id.action_settings:
            Toast.makeText(MainActivity.this, "打开", Toast.LENGTH_SHORT).show();
            break;
    }
    return super.onOptionsItemSelected(item);
}

@Override
public boolean onMenuItemClick(MenuItem menuItem) {

    return false;
}



//每次显示前都会调用
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
    //menu.clear();
    //menu.add();
    return super.onPrepareOptionsMenu(menu);
}
//关闭的时候调用
@Override
public void onOptionsMenuClosed(Menu menu) {
    Toast.makeText(this, "关闭", Toast.LENGTH_SHORT).show();
    super.onOptionsMenuClosed(menu);
}
//打开的时候调用

@Override
public boolean onMenuOpened(int featureId, Menu menu) {
    Toast.makeText(this, "打开", Toast.LENGTH_SHORT).show();
    return super.onMenuOpened(featureId, menu);
}

}