让Activity在Android5.0上全屏
2016-01-22 18:06
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View类提供了setSystemUiVisibility和getSystemUiVisibility方法,这两个方法实现对状态栏的动态显示或隐藏的操作,以及获取状态栏当前可见性。
setSystemUiVisibility(int visibility)方法可传入的实参为:
setSystemUiVisibility(int visibility)方法可传入的实参为:
1. View.SYSTEM_UI_FLAG_VISIBLE:显示状态栏,Activity不全屏显示(恢复到有状态的正常情况)。 2. View.INVISIBLE:隐藏状态栏,同时Activity会伸展全屏显示。 3. View.SYSTEM_UI_FLAG_FULLSCREEN:Activity全屏显示,且状态栏被隐藏覆盖掉。 4. View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN:Activity全屏显示,但状态栏不会被隐藏覆盖,状态栏依然可见,Activity顶端布局部分会被状态遮住。 5. View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION:效果同View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN 6. View.SYSTEM_UI_LAYOUT_FLAGS:效果同View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN 7. View.SYSTEM_UI_FLAG_HIDE_NAVIGATION:隐藏虚拟按键(导航栏)。有些手机会用虚拟按键来代替物理按键。 8. View.SYSTEM_UI_FLAG_LOW_PROFILE:状态栏显示处于低能显示状态(low profile模式),状态栏上一些图标显示会被隐藏。
import android.annotation.SuppressLint; import android.os.Bundle; import android.os.Handler; import android.support.v7.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.view.View; public class FullscreenActivity extends AppCompatActivity { /** * Some older devices needs a small delay between UI widget updates * and a change of the status and navigation bar. */ private static final int UI_ANIMATION_DELAY = 300; private final Handler mHideHandler = new Handler(); private View mContentView; //在线程中使用,隐藏标题栏,状态栏和最下方的三个按钮 private final Runnable mHidePart2Runnable = new Runnable() { @SuppressLint("InlinedApi") @Override public void run() { // Delayed removal of status and navigation bar // Note that some of these constants are new as of API 16 (Jelly Bean) // and API 19 (KitKat). It is safe to use them, as they are inlined // at compile-time and do nothing on earlier devices. mContentView.setSystemUiVisibility( View.SYSTEM_UI_FLAG_LOW_PROFILE | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION); } }; private View mControlsView; //显示标题栏,显示自定义的按钮 private final Runnable mShowPart2Runnable = new Runnable() { @Override public void run() { // Delayed display of UI elements ActionBar actionBar = getSupportActionBar(); if (actionBar != null) { actionBar.show(); } mControlsView.setVisibility(View.VISIBLE); } }; private boolean mVisible; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_fullscreen); mVisible = true; mControlsView = findViewById(R.id.fullscreen_content_controls); mContentView = findViewById(R.id.fullscreen_content); // Set up the user interaction to manually show or hide the system UI. mContentView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { toggle(); } }); toggle(); } private void toggle() { if (mVisible) { hide(); } else { show(); } } private void hide() { // Hide UI first ActionBar actionBar = getSupportActionBar(); if (actionBar != null) { actionBar.hide(); } mControlsView.setVisibility(View.GONE); mVisible = false; // Schedule a runnable to remove the status and navigation bar after a delay mHideHandler.removeCallbacks(mShowPart2Runnable); mHideHandler.postDelayed(mHidePart2Runnable, UI_ANIMATION_DELAY); } @SuppressLint("InlinedApi") private void show() { // Show the system bar mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION); mVisible = true; // Schedule a runnable to display UI elements after a delay mHideHandler.removeCallbacks(mHidePart2Runnable); mHideHandler.postDelayed(mShowPart2Runnable, UI_ANIMATION_DELAY); } }
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#0099cc" tools:context="com.my.recyclerviewdemo.FullscreenActivity"> <!-- The primary full-screen view. This can be replaced with whatever view is needed to present your content, e.g. VideoView, SurfaceView, TextureView, etc. --> <TextView android:id="@+id/fullscreen_content" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:keepScreenOn="true" android:text="@string/dummy_content" android:textColor="#33b5e5" android:textSize="50sp" android:textStyle="bold" /> <!-- This FrameLayout insets its children based on system windows using android:fitsSystemWindows. --> <FrameLayout android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true"> <LinearLayout android:id="@+id/fullscreen_content_controls" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="bottom|center_horizontal" android:background="@color/black_overlay" android:orientation="horizontal" tools:ignore="UselessParent"> <Button android:id="@+id/dummy_button" android:background="@android:color/transparent" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/dummy_button" /> </LinearLayout> </FrameLayout> </FrameLayout>
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