无法在 Android 上全屏显示应用

Question

我在 activity 中创建了一个图像，然后显示它。但是图像不是全屏的，因为它周围有白色边框！屏幕应该同时显示图像和闪光灯。这是我的 Java 代码：

public class DisplayData extends Activity {

    float minBright = 0;
    int patch = 25;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);


       this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
       // super.onCreate(savedInstanceState);// no need to write another    

        //time//
        setContentView(R.layout.activity_display);
        ViewFlipper imageFlipper = (ViewFlipper)findViewById( R.id.image_flipper );

        //I removed the irrelevant part of the code
      ImageView image = new ImageView ( getApplicationContext() );

        image.setImageBitmap(GridBitmap);

        imageFlipper.addView( image );

        imageFlipper.setFlipInterval( 2000 ); 
        imageFlipper.startFlipping();

        Thread thread = new Thread(){

            @Override
            public void run() {
                while (true) {

                    try {
                        synchronized (this) {
                            wait(bl1);

                            runOnUiThread(new Runnable() {
                                @Override
                                public void run() {
                                    WindowManager.LayoutParams layout = getWindow().getAttributes();
                                    layout.screenBrightness = maxBright;

                                    getWindow().setAttributes(layout);
                                }
                            });

                        }
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }


                    try {
                        synchronized (this) {
                            wait(wh1);

                            runOnUiThread(new Runnable() {
                                @Override
                                public void run() {
                                    WindowManager.LayoutParams layout = getWindow().getAttributes();
                                    layout.screenBrightness = minBright;

                                    getWindow().setAttributes(layout);
                                }
                            });

                        }
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            };
        };

        thread.start();

    }

}

这是 XML 文件（这只是一个 activity，应用程序包含另一个文件）：

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">




    <ViewFlipper
        android:id="@+id/image_flipper"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
    </ViewFlipper>
</RelativeLayout>

Answer 1

只需从布局中删除内边距即可：

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent"
android:layout_height="fill_parent" tools:context=".MainActivity">

<ViewFlipper
    android:id="@+id/image_flipper"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
</ViewFlipper>
</RelativeLayout>

无法在 Android 上全屏显示应用

Unable to display app full screen on Android

android

bitmap

android-fullscreen