大约有 3,653 项符合查询结果（耗时：0.0275秒） [XML]
Calling a Fragment method from a parent Activity
I see in the Android Fragments Dev Guide that an "activity can call methods in a fragment by acquiring a reference to the Fragment from FragmentManager, using findFragmentById() or findFragmentByTag() ."
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How to hide a View programmatically?
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Or view.setVisibility(View.INVISIBLE) if you just want to hide it.
From Android Docs:
INVISIBLE
This view is invisible, but it still takes up space for layout purposes. Use with setVisibility(int) and android:visibility.
GONE
This view is invisible, and it doesn't take any spac...
Overriding Binding in Guice
...ned in separate modules. The activity that's being injected into is in an Android Library Module, with its own RoboGuice module definition in the AndroidManifest.xml file.
The setup looks like this. In the Library Module there are these definitions:
AndroidManifest.xml:
<application androi...
Fragment lifecycle - which method is called upon show / hide?
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Similar to activity lifecycle, Android calls onStart() when fragment becomes visible. onStop() is normally called when fragment becomes invisible, but it can also be called later in time.
Depending on your layout Android can call onStart() even, when your...
Check if EditText is empty. [closed]
I have 5 EditTexts in android for users to input. I would like to know if I could have a method for checking all the 5 EditTexts if they are null. Is there any way to do this??
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How to get String Array from arrays.xml file
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Just change the code to:
package com.xtensivearts.episode.seven;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class Episode7 extends ListActivity {
String[] mTestArray;
/** Called when the activity is first created. */
@Overri...
Usage of forceLayout(), requestLayout() and invalidate()
...g called directly after invalidate is called, I even see that happening in Android source code for things like TextView, but according to this diagram doing so is redundant, right? So is there any purpose for doing that?
– tcox
May 12 '15 at 22:10
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Android ListView not refreshing after notifyDataSetChanged
My ListFragment code
11 Answers
11
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Get dimension from XML and set text size in runtime
...ablets in landscape orientation).
You could read more about dimensions in Android at: http://android4beginners.com/2013/07/appendix-c-everything-about-sizes-and-dimensions-in-android/
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...ment, asynchronously.
SQLite原文档
SQLite 是 Android 内置的小型、快速、独立的 SQL（结构化查询语言）数据库引擎。
SQL 语句用于创建、选择、更新和删除一个或多个表中的数据。SQL 允许表之间建立复杂的关系，并提...