어제, 오늘 그리고 내일

java.lang.ClassCastException: java.util.Collections$UnmodifiableRandomAccessList cannot be cast to java.util.ArrayList

▶ ArrayList를 Collection으로 변환하는 방법

ArrayList<User> usersArrayList = new ArrayList<User>();

Collection<User> userCollection = new HashSet<User>(usersArrayList);

▶ Collection을 ArrayList로 변환하는 방법

Collection<User> userCollection = new HashSet<User>(usersArrayList);

List<User> userList = new ArrayList<User>(userCollection );

java.net.URISyntaxException: Illegal character in query at index 50: androidData://androidScheme?requestCode=8&userAgent=function trim() { [native code] }&data=VEMgU2FtcGxlIFRleHQg7JuQ66y4IOuplOyLnOyngOyeheuLiOuLpC4=

     W/System.err:     at java.net.URI$Parser.fail(URI.java:2892)

     W/System.err:     at java.net.URI$Parser.checkChars(URI.java:3065)

     W/System.err:     at java.net.URI$Parser.parseHierarchical(URI.java:3155)W/System.err:     at java.net.URI$Parser.parse(URI.java:3097)

     W/System.err:     at java.net.URI.<init>(URI.java:583)

     W/System.err:     at com.android.sample.h2a.shared.UniScheme.getA2UAllParams(UniScheme.java:58)

     W/System.err:     at com.android.sample.h2a.shared.HybridAdapter.callUnisignByUri(HybridAdapter.java:74)

     W/System.err:     at com.android.sample.h2a.MainActivity$UniSignWebViewClient.shouldOverrideUrlLoading(MainActivity.java:119)

     W/System.err:     at android.webkit.WebViewClient.shouldOverrideUrlLoading(WebViewClient.java:77)

     W/System.err:     at aLy.a(PG:1)

     W/System.err:     at sV.a(PG:21)

     W/System.err:     at org.chromium.android_webview.AwContentsClientBridge.shouldOverrideUrlLoading(PG:160)

     W/System.err:     at android.os.MessageQueue.nativePollOnce(Native Method)

 W/System.err:     at android.os.MessageQueue.next(MessageQueue.java:326)

 W/System.err:     at android.os.Looper.loop(Looper.java:181)

 W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:7037)

 W/System.err:     at java.lang.reflect.Method.invoke(Native Method)

 W/System.err:     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)

 W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)

java.security.KeyStoreException: Can only replace keys with same alias: ABC != DEF

This Handler class should be static or leaks may occur (anonymous android.os.Handler)

public static final Handler myHandler = new  Handler() {
    public void handleMessage(Message msg) {
            .........
    }
}

 // 변수로 Handler 선언
private  Handler mHandler = new EunHandler();

private static class EunHandler extends Handler {
    public void handleMessage(Message msg) {
          // ..................
          // Logic 구현
          // ..................
    }
};

WARNING: API 'variant.getMergeResources()' is obsolete and has been replaced with 'variant.getMergeResourcesProvider()'.

It will be removed at the end of 2019.

For more information, see https://d.android.com/r/tools/task-configuration-avoidance.

REASON: It is currently called from the following trace:

dependencies {
    classpath 'com.android.tools.build:gradle:3.4.2'
    classpath 'com.google.gms:google-services:4.2.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}

java.security.InvalidKeyException: Unsupported key algorithm: RSA. OnlyEC supported

Signature keystoreSignature = Signature.getInstance("SHA256withECDSA");
keystoreSignature.initSign(mPrivateKey);
keystoreSignature.update(inputData);
byte[] signature = keystoreSignature.sign();

Signature keystoreSignature = Signature.getInstance("SHA256withRSA");
keystoreSignature.initSign(mPrivateKey);
keystoreSignature.update(inputData);
byte[] signature = keystoreSignature.sign();