Java 如何删除android系统栏（页脚栏）

我在一个android项目中工作。这个项目包含许多活动。我正在尝试从现有活动中删除系统栏（页脚栏）

因此，我在

标记下的AndroidManifest.xml中添加了以下行：

<category android:name="android.intent.category.HOME" />
<uses-permission android:name="android.permission.EXPAND_STATUS_BAR"/>

但系统栏（页脚栏）不会被删除

我的Android版本是4.2.2

---

我遗漏了什么吗？

您不能隐藏系统栏。你可以调暗酒吧的颜色。下面的链接可能会帮助您了解为什么不能隐藏它以及如何使条变暗

---

默认情况下，您不应该删除状态栏，因为它是来自Android UI的服务。然后谷歌让你隐藏它，但是如果用户刷了它，它会回来

但是，如果您在设备上具有root访问权限，则可以执行

这段代码可以通过终止状态栏的进程并再次调用它来隐藏和显示状态栏

package com.example.statusbar;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;

public class MainActivity extends Activity {

    String commandToExecute;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_main);

        commandToExecute = "/system/xbin/su";
        executeShellCommand(commandToExecute);

        Button btHideStatusBar = (Button) findViewById(R.id.buttonHide);
        Button btShowStatusBar = (Button) findViewById(R.id.buttonShow);


        btHideStatusBar.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                commandToExecute = "/system/xbin/su -c /system/bin/service call activity 42 s16 com.android.systemui";
                executeShellCommand(commandToExecute);

            }
        });

    btShowStatusBar.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            commandToExecute = "/system/xbin/su -c /system/bin/am startservice -n com.android.systemui/.SystemUIService";
            executeShellCommand(commandToExecute);

        }
    });

    }

    private boolean executeShellCommand(String command) {
        try {

            Runtime.getRuntime().exec(command);

            return true;
        } catch (Exception e) {
            return false;

        }
    }


}

据此：

适用于android4.4+

尝试沉浸式模式

快速代码段：

@SuppressLint("NewApi")
    protected void onCreate(Bundle savedInstanceState) {

    currentApiVersion = android.os.Build.VERSION.SDK_INT;

    final int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;

    // This work only for android 4.4+
    if (currentApiVersion >= 19) {

        getWindow().getDecorView().setSystemUiVisibility(flags);
        // Code below is for case when you press Volume up or Volume down.
        // Without this after pressing valume buttons navigation bar will
        // show up and don't hide
        final View decorView = getWindow().getDecorView();
        decorView
                .setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {

                    @Override
                    public void onSystemUiVisibilityChange(int visibility) {
                        if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
                            decorView.setSystemUiVisibility(flags);
                        }
                    }
                });
    }
}

@SuppressLint("NewApi")
@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    if (currentApiVersion >= 19 && hasFocus) {
        getWindow().getDecorView().setSystemUiVisibility(
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
    }
}

如果按导航栏显示的音量增大或减小时出现问题。是否应在onCreate中添加代码请参见

---

这里还有一个相关的问题：

您是否查看过WindowManager.LayoutParams？不确定你需要什么，但不是一个坏的开始。

@SuppressLint("NewApi")
    protected void onCreate(Bundle savedInstanceState) {

    currentApiVersion = android.os.Build.VERSION.SDK_INT;

    final int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;

    // This work only for android 4.4+
    if (currentApiVersion >= 19) {

        getWindow().getDecorView().setSystemUiVisibility(flags);
        // Code below is for case when you press Volume up or Volume down.
        // Without this after pressing valume buttons navigation bar will
        // show up and don't hide
        final View decorView = getWindow().getDecorView();
        decorView
                .setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {

                    @Override
                    public void onSystemUiVisibilityChange(int visibility) {
                        if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
                            decorView.setSystemUiVisibility(flags);
                        }
                    }
                });
    }
}

@SuppressLint("NewApi")
@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    if (currentApiVersion >= 19 && hasFocus) {
        getWindow().getDecorView().setSystemUiVisibility(
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
    }
}