[英]Create Bitmap from Activity
我對Android有點陌生。 但是對iOS開發了很多。
我有一個父活動(Activity1),它必須在后台加載和設置另一個活動(Activity2)。 然后,Activity2准備好了,它必須調用一個可以使用Activity2並返回位圖圖像的方法。(我需要此圖像用於Facebook分享。)
所以我的問題是:
1.它如何啟動第二個活動而不顯示它
2如何進行第二項活動並將其作為位圖返回
public class Activity1 extends Activity implements OnClickListener, KKServerApiListener {
private Activity2 facebookshareActivity;
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_summary);
initView();
/* Try 1 */
facebookshareActivity = new KKFacebookShareActivity(route);
/* Tried with some different things here */
/* Try 2 */
Intent myIntent = new Intent(this, KKFacebookShareActivity.class);
myIntent.putExtra("number", route.id);
this.startActivity(myIntent);
}
public void makeDialogShare(final Context context, final String str) {
/*SETTING UP THE DIALOG */
// ... //
// ... //
dialogButtonOk.setText("Share");
dialogButtonOk.setOnClickListener(new OnClickListener() {
@Override
public void onClick(final View v) {
/* My try on getting my activity to a bitmap */
View screenView = ****
screenView.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(screenView.getDrawingCache());
screenView.setDrawingCacheEnabled(false);
/* Haven't worked on this part just something i pasted from facebook */
SharePhoto photo = new SharePhoto.Builder()
.setBitmap(bitmap)
.build();
SharePhotoContent content = new SharePhotoContent.Builder()
.addPhoto(photo)
.build();
showDashboard(ctx, true);
//finish();
}
});
final Button dialogButtonCancel = (Button) dialog.findViewById(R.id.btnCancel);
dialogButtonCancel.setText("Continue");
dialogButtonCancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(final View v) {
dialog.dismiss();
//finish();
}
});
dialog.show();
}
}
如果您需要獲取有關Activity2
中內容的圖像,則可以嘗試擴大Activity的布局。 然后使用剛放大的視圖創建一個位圖,然后將其返回。 在您的代碼中是這樣的:
/* My try on getting my activity to a bitmap */
LayoutInflater inflater = LayoutInflater.from(getContext());
View screenView = inflater.inflate(R.layout.your_activity_layout, null);
// add views and set rules (same as in the XML) to screenView
...
screenView.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
screenView.layout(0, 0, screenView.getMeasuredWidth(), screenView.getMeasuredHeight());
Bitmap bitmap = Bitmap.createBitmap(screenView.getMeasuredWidth(), screenView.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
screenView.draw(c);
...
/* Haven't worked on this part just something i pasted from facebook */
SharePhoto photo = new SharePhoto.Builder()
.setBitmap(bitmap)
.build();
SharePhotoContent content = new SharePhotoContent.Builder()
.addPhoto(photo)
.build();
showDashboard(ctx, true);
R.layout.your_activity_layout
是您要共享的布局。
注意:由於您是手動創建視圖,因此可能需要添加一些視圖並以編程方式設置配置,以便重新創建布局(視圖的XML)。
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