自定义NavigationView - 添加动态headerView，Android支持设计库

Question

我尝试了新的Android支持设计库中的navigationView。我想要一个动态的headerview。基本上，我的标题视图将显示当天的报价。我喜欢大约10个引号，我想随机选择一个引用并在headerView的textview中显示。我还想为headerView添加onClick方法。

目前，我还没有看到以编程方式更改标题视图布局的任何可能性。有任何建议可以实现吗？

Answer 1

首先创建标题XML，如 lay_header.xml

<TextView
    android:id="@+id/tvThought"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

你的java文件上的

在TextView中膨胀了上面的标题。像

TextView headerView = (TextView) LayoutInflater.from(this).inflate(R.layout.lay_header, null);
headerView.setText("Your_thoght");

现在将其添加为HeaderView

navView = (NavigationView) findViewById(R.id.navView);
navView.addHeaderView(headerView);

多数民众赞成......

Answer 2

新支持库更新（23.1.1）后，

你可以这样做 -

在导航视图内的app:headerLayout="@layout/drawer_header"中添加标题视图。

然后，您可以通过

访问它

View header = navigationView.getHeaderView(0);
TextView text = (TextView) header.findViewById(R.id.textView);

或者如果您有多个标题

navigationView.getHeaderCount()

参考：https://code.google.com/p/android/issues/detail?id=190226#c31

Answer 3

TextView txt2;
txt2 = (TextView) navigationView.inflateHeaderView(R.layout.nav_header_main).findViewById(R.id.textView2);
txt2.setText("wow! It works like a charm");

Answer 4

创建标题布局内部的文本视图，

<TextView
                android:id="@+id/profile_email_text"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_alignLeft="@id/profile_image"
                android:layout_alignParentBottom="true"
                android:layout_toLeftOf="@id/expand_account_box_indicator"
                android:ellipsize="end"
                android:maxLines="1"
                android:paddingBottom="16dp"
                android:singleLine="true"
                android:clickable="true"
                android:onClick="onSelectText"
                android:text="dhaval0122@gmail.com"
                android:textColor="@color/body_text_2_inverse"
                android:textSize="@dimen/text_size_medium" />

in onCreate，

((TextView) findViewById(R.id.profile_email_text)).setText("test");

在您的活动中创建方法onSelectText

public void onSelectText(View v){
        if(v.getId() == R.id.profile_email_text){
            Snackbar
                    .make(fab, "clicked on sub title", Snackbar.LENGTH_LONG)
                            //.setAction(R.string.snackbar_action, myOnClickListener)
                    .show();
            drawer_layout.closeDrawers();
        }
    }

Answer 5

您可以通过在导航视图上调用Iterator it<String> = names.iterator(); 以编程方式添加自定义标头，或使用addHeaderView在布局文件中对其进行定义。

Answer 6

您可以使用//Detect Browser var isOpera = !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0; // Opera 8.0+ (UA detection to detect Blink/v8-powered Opera) var isFirefox = typeof InstallTrigger !== 'undefined'; // Firefox 1.0+ var isSafari = Object.prototype.toString.call(window.HTMLElement).indexOf('Constructor') > 0; // At least Safari 3+: "[object HTMLElementConstructor]" var isChrome = !!window.chrome && !isOpera; // Chrome 1+ var isIE = /*@cc_on!@*/false || !!document.documentMode; // At least IE6 var Host = window.location.host; //Clear Basic Realm Authentication if(isIE){ //IE document.execCommand("ClearAuthenticationCache"); window.location = '/'; } else if(isSafari) {//Safari. but this works mostly on all browser except chrome (function(safeLocation){ var outcome, u, m = "You should be logged out now."; // IE has a simple solution for it - API: try { outcome = document.execCommand("ClearAuthenticationCache") }catch(e){} // Other browsers need a larger solution - AJAX call with special user name - 'logout'. if (!outcome) { // Let's create an xmlhttp object outcome = (function(x){ if (x) { // the reason we use "random" value for password is // that browsers cache requests. changing // password effectively behaves like cache-busing. x.open("HEAD", safeLocation || location.href, true, "logout", (new Date()).getTime().toString()) x.send(""); // x.abort() return 1 // this is **speculative** "We are done." } else { return } })(window.XMLHttpRequest ? new window.XMLHttpRequest() : ( window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : u )) } if (!outcome) { m = "Your browser is too old or too weird to support log out functionality. Close all windows and restart the browser." } alert(m); window.location = '/'; // return !!outcome })(/*if present URI does not return 200 OK for GET, set some other 200 OK location here*/) } else{ //Firefox,Chrome window.location = 'http://log:out@'+Host+'/'; } 访问NavigationView中的标题元素。即使您已使用headerLayout属性初始化标头，即使这样也可以。 findViewById()。然后，您可以动态修改标头，而无需膨胀或添加新标头。

app:headerLayout="@layout/drawer_header"

<强> drawer_header.xml

@Override
public boolean onNavigationItemSelected(final MenuItem menuItem) {

...

if(mNavItemId == R.id.drawer_item_1)
{
  View headerView = mNavigationView.findViewById(R.id.drawer_header_root);
  // Test modifying the size of the header root element (FrameLayout)
  // when the first menu item is clicked.
  LinearLayout.LayoutParams p = (LinearLayout.LayoutParams) headerView.getLayoutParams();
  p.height = p.height == 700 ? 400 : 700;
  headerView.setLayoutParams(p);
  return true;
}
...

我认为Dhawal说同样的话，但它并不是非常清楚。

Answer 7

我的链接会帮助你

slimier question

final NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view);

View headView = navigationView.getHeaderView(0);

((TextView) headView.findViewById(R.id.nav_title)).setText("New title");

Answer 8

首先你需要获得navigationView。 { "query": { "count": 1, "created": "2015-12-27T23:43:58Z", "lang": "en-US", "diagnostics": { "publiclyCallable": "true", "url": { "execution-start-time": "28", "execution-stop-time": "98", "execution-time": "70", "content": "http://wws.geotech.yahooapis.com/v1/countries;start=0;count=1000" }, "user-time": "103", "service-time": "70", "build-version": "0.2.369" }, "results": { "place": { "lang": "en-US" // wrong language! } } } }

然后标题。 NavigationView navigationView =(NavigationView)findViewById(R.id.nav_view); 然后是textView。 View header = navigationView.getHeaderView(0) 最后，您可以设置要显示的文本。 TextView text = (TextView) header.findViewById(R.id.textView);