Androidプログラミングのスクリーン実装方法(scrollviewとlistviewを含む)
本論文の例は、Androidプログラミングのスクリーンショット実現方法を説明する。皆さんに参考にしてあげます。具体的には以下の通りです。
public class ScreenShot {
// Activity , png
public static Bitmap takeScreenShot(Activity activity) {
// View View
View view = activity.getWindow().getDecorView();
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap b1 = view.getDrawingCache();
//
Rect frame = new Rect();
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int statusBarHeight = frame.top;
System.out.println(statusBarHeight);
//
int width = activity.getWindowManager().getDefaultDisplay().getWidth();
int height = activity.getWindowManager().getDefaultDisplay()
.getHeight();
//
// Bitmap b = Bitmap.createBitmap(b1, 0, 25, 320, 455);
Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height
- statusBarHeight);
view.destroyDrawingCache();
savePic(b, "/sdcard/screen_test.png");
return b;
}
// sdcard
public static void savePic(Bitmap b, String strFileName) {
FileOutputStream fos = null;
try {
fos = new FileOutputStream(strFileName);
if (null != fos) {
b.compress(Bitmap.CompressFormat.PNG, 90, fos);
fos.flush();
fos.close();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* View bitmap
* */
public static Bitmap convertViewToBitmap(View view) {
view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
view.buildDrawingCache();
Bitmap bitmap = view.getDrawingCache();
if (bitmap != null) {
System.out.println(" nullde1");
Log.d("nullde1", "nullde1");
} else {
System.out.println(" nullnulllnulnlul");
}
return bitmap;
}
// 1
public static void shoot(Activity a) {
ScreenShot.savePic(ScreenShot.takeScreenShot(a), "/sdcard/screen_test.png");
}
// 2
public static void shootView(View view) {
ScreenShot.savePic(ScreenShot.convertViewToBitmap(view),
"sdcard/xx.png");
}
public static Bitmap getViewBitmap(View v) {
v.clearFocus();
v.setPressed(false);
boolean willNotCache = v.willNotCacheDrawing();
v.setWillNotCacheDrawing(false);
// Reset the drawing cache background color to fully transparent
// for the duration of this operation
int color = v.getDrawingCacheBackgroundColor();
v.setDrawingCacheBackgroundColor(0);
if (color != 0) {
v.destroyDrawingCache();
}
v.buildDrawingCache();
Bitmap cacheBitmap = v.getDrawingCache();
if (cacheBitmap == null) {
Log.e("TTTTTTTTActivity", "failed getViewBitmap(" + v + ")",
new RuntimeException());
return null;
}
Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);
// Restore the view
v.destroyDrawingCache();
v.setWillNotCacheDrawing(willNotCache);
v.setDrawingCacheBackgroundColor(color);
return bitmap;
}
/**
* scrollview
* **/
public static Bitmap getBitmapByView(ScrollView scrollView) {
int h = 0;
Bitmap bitmap = null;
// listView
for (int i = 0; i < scrollView.getChildCount(); i++) {
h += scrollView.getChildAt(i).getHeight();
scrollView.getChildAt(i).setBackgroundResource(R.drawable.bg3);
}
Log.d(TAG, " :" + h);
Log.d(TAG, " :" + scrollView.getHeight());
// bitmap
bitmap = Bitmap.createBitmap(scrollView.getWidth(), h,
Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(bitmap);
scrollView.draw(canvas);
//
FileOutputStream out = null;
try {
out = new FileOutputStream("/sdcard/screen_test.png");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
if (null != out) {
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
}
} catch (IOException e) {
// TODO: handle exception
}
return bitmap;
}
private static String TAG = "Listview and ScrollView item :";
/**
* listview
* **/
public static Bitmap getbBitmap(ListView listView) {
int h = 0;
Bitmap bitmap = null;
// listView
for (int i = 0; i < listView.getChildCount(); i++) {
h += listView.getChildAt(i).getHeight();
}
Log.d(TAG, " :" + h);
Log.d(TAG, "list :" + listView.getHeight());
// bitmap
bitmap = Bitmap.createBitmap(listView.getWidth(), h,
Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(bitmap);
listView.draw(canvas);
//
FileOutputStream out = null;
try {
out = new FileOutputStream("/sdcard/screen_test.png");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
if (null != out) {
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
}
} catch (IOException e) {
// TODO: handle exception
}
return bitmap;
}
}
ここで述べたように、皆さんのAndroidプログラムの設計に役に立ちます。