模仿實例地址:SimpleNews
前言這是github開源項目,原項目有四個模塊。我這裏之模仿其中
一個(新聞)。學會MD開發和MVP架構。
主頁佈局:
這裏主要使用了toolbar和DrawerLayout實現導航條以及側滑的效果。
當然爲了填充側滑欄,又使用了NavigationView這個控件。
toolbar和DrawerLayout
我已經在前面的博客文章介紹過了:
android–UI—側滑drawerLayout
android–UI–導航條toolbar
NavigationView實踐
使用ToolBar代替ActionBar的時候,首先去掉Actionbar
修該主題:
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
爲了使用NavigationView,添加依賴:
compile 'com.android.support:design:24.2.0'
新人要知道如何搜索依賴添加:File–>ProjectStructure–>app–>Dependencies–>綠色加號–>Library Dependencies–>搜索–>雙擊
佈局文件:activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".Activity.MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="@+id/appbar"
layout="@layout/toolbar" />
<!-- Content -->
<FrameLayout
android:id="@+id/content_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/appbar" />
</RelativeLayout>
<!-- Drawer -->
<android.support.design.widget.NavigationView
android:id="@+id/navigation"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/drawer_head"
app:menu="@menu/drawer" />
</android.support.v4.widget.DrawerLayout>
toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="5dp"
/>
</LinearLayout>
menu文件,給側邊欄添加選項。以及頂部layout
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:checkableBehavior="single">
<item
android:id="@+id/navigation_original"
android:checked="true"
android:icon="@mipmap/ic_launcher"
android:title="菜單1"/>
<item
android:id="@+id/navigation_library"
android:icon="@mipmap/ic_launcher"
android:title="菜單2"/>
</group>
</menu>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="192dp"
android:background="?attr/colorPrimaryDark"
android:gravity="center"
android:orientation="vertical"
android:padding="16dp"
android:theme="@style/ThemeOverlay.AppCompat.Dark">
<ImageView
android:src="@mipmap/ic_launcher"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:layout_marginTop="10dp"
android:textSize="18sp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="lw_zhaoritian"
android:gravity="center"
/>
</LinearLayout>
效果測試:
toolbar還是空的,需要在代碼裏設置。
MainActivity:
public class MainActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mDrawerToggle;
private Toolbar mToolbar;
private NavigationView mNavigationView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, mToolbar, R.string.open,
R.string.close);
mDrawerToggle.syncState();
mDrawerLayout.setDrawerListener(mDrawerToggle);
mNavigationView = (NavigationView) findViewById(R.id.navigation);
setupDrawerContent(mNavigationView);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
Toast.makeText(getApplicationContext(),
item.getTitle(), Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
private void setupDrawerContent(NavigationView navigationView) {
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
Toast.makeText(getApplicationContext(),
menuItem.getTitle(), Toast.LENGTH_LONG).show();
menuItem.setChecked(true);
mDrawerLayout.closeDrawers();
return true;
}
});
}
}
測試:
講解:
首先:獲取當前的toolbar取代之前的actionbar
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
第一步:給toolbar添加menu並且添加事件----詳見 android–UI–導航條toolbar
第二步:
使用ActionBarDrawerToggle
類,使我們的toolbar和drawer更好的顯示。
參考文章:ActionBarDrawerToggle和ToolBar結合使用
ActionBarDrawerToggle就是DrawerLayout事件的監聽器。
能
ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(getActivity(),
drawerLayout, toolBar, R.string.drawer_open, R.string.drawer_close){
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
mUserLearnedDrawer = true;
saveToPreferences(getActivity(), KEY_USER_LEARNED_DWARER, mUserLearnedDrawer + "");
}
getActivity().invalidateOptionsMenu();
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
getActivity().invalidateOptionsMenu();
}
@Override
public void onDrawerSlide(View drawerView, float slideOffset) {
if (slideOffset < 0.6) {
toolBar.setAlpha(1 - slideOffset);
}
}
};
實例化ActionBarDrawerToggle時候三個參數:
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, mToolbar, R.string.open,
R.string.close);
mDrawerToggle.syncState();
設置DrawerLayout監聽:
mDrawerLayout.setDrawerListener(mDrawerToggle);
設置側滑菜單的點擊事件:
private void setupDrawerContent(NavigationView navigationView) {
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
Toast.makeText(getApplicationContext(),
menuItem.getTitle(), Toast.LENGTH_LONG).show();
menuItem.setChecked(true);
mDrawerLayout.closeDrawers();
return true;
}
});
}