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Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Android代码优化小技巧前言这篇文章主要是介绍了一些小细节的优化技巧，当这些小技巧综合使用起来的时候，对于整个App的性能提升还是有作用的，只是不能较大幅度...前言
这篇文章主要是介绍了一些小细节的优化技巧，当这...
Android: What is better - multiple activities or switching views manually?
I have developed some apps for Android, and this questions stays always:
7 Answers
7
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Android: I am unable to have ViewPager WRAP_CONTENT
...wPager in yout XML layouts just like the original ViewPager:
<view
android:layout_width="match_parent"
android:layout_height="wrap_content"
class="de.cybergen.ui.layout.WrapContentHeightViewPager"
android:id="@+id/wrapContentHeightViewPager"
android:layout_alignParentBottom="...
How to make a copy of a file in android?
...May this is the source of the problem? And yes, I have <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>.
– Mike B.
Jun 26 '15 at 19:00
1
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Android: checkbox listener
...
You get the error because you imported wrong package.You should import android.widget.CompoundButton.OnCheckedChangeListener;
So the callback should be :
box.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButto...
How to set RelativeLayout layout params in code not in xml?
.... All done in MainActivity.java.
package com.example.atul.allison;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.RelativeLayout;
import android.widget.Button;
import android.graphics.Color;
import android.widget.EditText;
import android.content.res...
runOnUiThread vs Looper.getMainLooper().post in Android
...versus Looper.getMainLooper().post() to execute a task on the UI thread in Android??
1 Answer
...
Select multiple images from android gallery
So basically what i am trying to achieve is opening the Gallery in Android and let the user select multiple images . Now this question has been asked frequently but i'm not satisfied with the answers. Mainly because i found something interesting in de docs in my IDE (i come back on this later) ...
RuntimeException: Unable to instantiate application
...ser's device.
It seems that this dalvik verbose error log only happend on Android 4.0 system, I've tested it myself on Android 3.2 and 2.3.3 running environment, where you cannot replicate to get this message shown on neither of them. A similar question has been discussed before at here and someone...
How to get screen dimensions as pixels in Android
...ent and want to acomplish this just use Activity.WindowManager (in Xamarin.Android) or getActivity().getWindowManager() (in java).
Before getSize was introduced (in API level 13), you could use the getWidth and getHeight methods that are now deprecated:
Display display = getWindowManager().getDefa...