Android获取状态栏和标题栏的高度

1.获取状态栏高度：

decorView是window中的最顶层view，可以从window中获取到decorView，然后decorView有个getWindowVisibleDisplayFrame方法可以获取到程序显示的区域，包括标题栏，但不包括状态栏。
于是，我们就可以算出状态栏的高度了。

Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int statusBarHeight = frame.top;

Rect frame = new Rect(); getWindow().getDecorView().getWindowVisibleDisplayFrame(frame); int statusBarHeight = frame.top;

 经过测试上面这种方法得到的结果是0，而通过下面的方式可以顺利获取状态栏高度：

在源码程序中代码：

height= getResources().getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);

通过SDK获取代码：

class c = Class.forName("com.android.internal.R$dimen");
Object obj = c.newInstance();
Field field = c.getField("status_bar_height");
int x = Integer.parseInt(field.get(obj).toString());
int y = getResources().getDimensionPixelSize(x);

class c = Class.forName("com.android.internal.R$dimen"); Object obj = c.newInstance(); Field field = c.getField("status_bar_height"); int x = Integer.parseInt(field.get(obj).toString()); int y = getResources().getDimensionPixelSize(x);

 

2.获取标题栏高度：

getWindow().findViewById(Window.ID_ANDROID_CONTENT)这个方法获取到的view就是程序不包括标题栏的部分，然后就可以知道标题栏的高度了。

int contentTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
//statusBarHeight是上面所求的状态栏的高度
int titleBarHeight = contentTop - statusBarHeight

int contentTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop(); //statusBarHeight是上面所求的状态栏的高度 int titleBarHeight = contentTop - statusBarHeight

 

例子代码：

package com.cn.lhq;
import android.app.Activity;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.widget.ImageView;
public class Main extends Activity {
    ImageView iv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        iv = (ImageView) this.findViewById(R.id.ImageView01);
        iv.post(new Runnable() {
            public void run() {
                viewInited();
            }
        });
        Log.v("test", "== ok ==");
    }
    private void viewInited() {
        Rect rect = new Rect();
        Window window = getWindow();
        iv.getWindowVisibleDisplayFrame(rect);
        int statusBarHeight = rect.top;
        int contentViewTop = window.findViewById(Window.ID_ANDROID_CONTENT)
                .getTop();
        int titleBarHeight = contentViewTop - statusBarHeight;
        // 测试结果：ok之后 100多 ms 才运行了
        Log.v("test", "=-init-= statusBarHeight=" + statusBarHeight
                + " contentViewTop=" + contentViewTop + " titleBarHeight="
                + titleBarHeight);
    }
}

package com.cn.lhq; import android.app.Activity; import android.graphics.Rect; import android.os.Bundle; import android.util.Log; import android.view.Window; import android.widget.ImageView; public class Main extends Activity { ImageView iv; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); iv = (ImageView) this.findViewById(R.id.ImageView01); iv.post(new Runnable() { public void run() { viewInited(); } }); Log.v("test", "== ok =="); } private void viewInited() { Rect rect = new Rect(); Window window = getWindow(); iv.getWindowVisibleDisplayFrame(rect); int statusBarHeight = rect.top; int contentViewTop = window.findViewById(Window.ID_ANDROID_CONTENT) .getTop(); int titleBarHeight = contentViewTop - statusBarHeight; // 测试结果：ok之后 100多 ms 才运行了 Log.v("test", "=-init-= statusBarHeight=" + statusBarHeight + " contentViewTop=" + contentViewTop + " titleBarHeight=" + titleBarHeight); } }

 

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <ImageView
        android:id="@+id/ImageView01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
</LinearLayout>