MainActivity.java: uses or overrides a deprecated API. Recompile with -Xlint:deprecation for details

Question

I have no clue how to solve this issue.
When I try to compile the folder to APK file, there is message that says

MainActivity.java uses or overrides a deprecated API.

I am using Android Studio version 3.2.0 and Java version 8. I tried everything but it doesn't work. I also searched up internet but I couldn't get the answer.

package com.kakao.talk.theme.apeach;

import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;

public class MainActivity extends Activity {
private static final String KAKAOTALK_SETTINGS_THEME_URI = 
"kakaotalk://settings/theme/";
private static final String MARKET_URI = "market://details?id=";
private static final String KAKAO_TALK_PACKAGE_NAME = "com.kakao.talk";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        try {
            Window window = this.getWindow();
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            window.setStatusBarColor(getResources().getColor(R.color.statusBarColor));
        } catch (Throwable ignored) {
        }
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        try {
            getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
        } catch (Throwable ignored) {
        }
    }

    final Button applyButton = (Button) findViewById(R.id.apply);
    applyButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            final Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setData(Uri.parse(KAKAOTALK_SETTINGS_THEME_URI + getPackageName()));
            startActivity(intent);
            finish();
        }
    });

    final Button installButton = (Button) findViewById(R.id.market);
    installButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(MARKET_URI + KAKAO_TALK_PACKAGE_NAME));
            startActivity(intent);
            finish();
        }
    });

    try {
        getPackageManager().getPackageInfo(KAKAO_TALK_PACKAGE_NAME, 0);
        applyButton.setVisibility(View.VISIBLE);
        installButton.setVisibility(View.GONE);
    } catch (NameNotFoundException e) {
        applyButton.setVisibility(View.GONE);
        installButton.setVisibility(View.VISIBLE);
    }
}

}

Answer 1

welcome to StackOverflow!

In your code, after the version check, you are trying to set the window status color by using getResources().getColor(), which has been deprecated for a few years now.

You can use the ContextCompat to achieve this: ContextCompat.getColor(context, R.color.color_name).

You should change R.color.color_name for your desired resource (in your case should be R.color.statusBarColor) as well as pass the correct context (which should be getApplicationContext()).

Further information can be found on this post, and never forget the great google's documentation on Android.