我的应用程序有问题:打开时，由于许可证集成而崩溃。但我不知道问题出在哪里。请问你能帮我找到它吗？我将不胜感激!
我的主要 Activity :
package com.example.testouille;
import com.google.android.vending.licensing.AESObfuscator;
import com.google.android.vending.licensing.LicenseChecker;
import com.google.android.vending.licensing.LicenseCheckerCallback;
import com.google.android.vending.licensing.ServerManagedPolicy;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.provider.Settings.Secure;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
public class MainActivity extends Activity {
static final String BASE64_PUBLIC_KEY = "LICENSE";
private static final byte[] SALT = new byte[] {
-46, 65, 30, -128, -103, -57, 74, -64, 51, 88, -95, -45, 77, -117, -36, -113, -11, 32, -64,
89
};
private Handler mHandler;
private LicenseChecker mChecker;
private LicenseCheckerCallback mLicenseCheckerCallback;
boolean licensed;
boolean checkingLicense;
boolean didCheck;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private void doCheck() {
didCheck = false;
checkingLicense = true;
setProgressBarIndeterminateVisibility(true);
mChecker.checkAccess(mLicenseCheckerCallback);
}
private class MyLicenseCheckerCallback implements LicenseCheckerCallback {
@Override
public void allow(int reason) {
if (isFinishing()) {
return;
}
Log.i("License","Accepted!");
licensed = true;
checkingLicense = false;
didCheck = true;
}
@SuppressWarnings("deprecation")
@Override
public void dontAllow(int reason) {
if (isFinishing()) {
return;
}
Log.i("License","Denied!");
Log.i("License","Reason for denial: "+reason);
licensed = false;
checkingLicense = false;
didCheck = true;
showDialog(0);
}
@SuppressWarnings("deprecation")
@Override
public void applicationError(int reason) {
Log.i("License", "Error: " + reason);
if (isFinishing()) {
return;
}
licensed = true;
checkingLicense = false;
didCheck = false;
showDialog(0);
}
}
protected Dialog onCreateDialog(int id) {
return new AlertDialog.Builder(this)
.setTitle("UNLICENSED APPLICATION DIALOG TITLE")
.setMessage("This application is not licensed, please buy it from the play store.")
.setPositiveButton("Buy", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(
"http://market.android.com/details?id=" + getPackageName()));
startActivity(marketIntent);
finish();
}
})
.setNegativeButton("Exit", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
}
})
.setNeutralButton("Re-Check", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
doCheck();
}
})
.setCancelable(false)
.setOnKeyListener(new DialogInterface.OnKeyListener(){
public boolean onKey(DialogInterface dialogInterface, int i, KeyEvent keyEvent) {
Log.i("License", "Key Listener");
finish();
return true;
}
})
.create();
}{
String deviceId = Secure.getString(getContentResolver(), Secure.ANDROID_ID);
Log.i("Device Id", deviceId);
mHandler = new Handler();
mLicenseCheckerCallback = new MyLicenseCheckerCallback();
mChecker = new LicenseChecker(this, new ServerManagedPolicy(this, new AESObfuscator(SALT, getPackageName(), deviceId)), BASE64_PUBLIC_KEY);
}}
我的日志猫:
02-21 15:00:06.530: D/AndroidRuntime(1231): Shutting down VM
02-21 15:00:06.530: W/dalvikvm(1231): threadid=1: thread exiting with uncaught exception (group=0xb3ab8ba8)
02-21 15:00:06.550: E/AndroidRuntime(1231): FATAL EXCEPTION: main
02-21 15:00:06.550: E/AndroidRuntime(1231): Process: com.example.testouille, PID: 1231
02-21 15:00:06.550: E/AndroidRuntime(1231): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.testouille/com.example.testouille.MainActivity}: java.lang.NullPointerException
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.app.ActivityThread.access$800(ActivityThread.java:135)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.os.Handler.dispatchMessage(Handler.java:102)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.os.Looper.loop(Looper.java:136)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-21 15:00:06.550: E/AndroidRuntime(1231): at java.lang.reflect.Method.invokeNative(Native Method)
02-21 15:00:06.550: E/AndroidRuntime(1231): at java.lang.reflect.Method.invoke(Method.java:515)
02-21 15:00:06.550: E/AndroidRuntime(1231): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-21 15:00:06.550: E/AndroidRuntime(1231): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-21 15:00:06.550: E/AndroidRuntime(1231): at dalvik.system.NativeStart.main(Native Method)
02-21 15:00:06.550: E/AndroidRuntime(1231): Caused by: java.lang.NullPointerException
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.content.ContextWrapper.getContentResolver(ContextWrapper.java:99)
02-21 15:00:06.550: E/AndroidRuntime(1231): at com.example.testouille.MainActivity.<init>(MainActivity.java:152)
02-21 15:00:06.550: E/AndroidRuntime(1231): at java.lang.Class.newInstanceImpl(Native Method)
02-21 15:00:06.550: E/AndroidRuntime(1231): at java.lang.Class.newInstance(Class.java:1208)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
02-21 15:00:06.550: E/AndroidRuntime(1231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112)
02-21 15:00:06.550: E/AndroidRuntime(1231): ... 11 more
02-21 15:00:14.370: I/Process(1231): Sending signal. PID: 1231 SIG: 9
02-21 15:01:30.460: D/AndroidRuntime(1251): Shutting down VM
02-21 15:01:30.470: W/dalvikvm(1251): threadid=1: thread exiting with uncaught exception (group=0xb3ab8ba8)
02-21 15:01:30.530: E/AndroidRuntime(1251): FATAL EXCEPTION: main
02-21 15:01:30.530: E/AndroidRuntime(1251): Process: com.example.testouille, PID: 1251
02-21 15:01:30.530: E/AndroidRuntime(1251): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.testouille/com.example.testouille.MainActivity}: java.lang.NullPointerException
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.app.ActivityThread.access$800(ActivityThread.java:135)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.os.Handler.dispatchMessage(Handler.java:102)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.os.Looper.loop(Looper.java:136)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-21 15:01:30.530: E/AndroidRuntime(1251): at java.lang.reflect.Method.invokeNative(Native Method)
02-21 15:01:30.530: E/AndroidRuntime(1251): at java.lang.reflect.Method.invoke(Method.java:515)
02-21 15:01:30.530: E/AndroidRuntime(1251): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-21 15:01:30.530: E/AndroidRuntime(1251): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-21 15:01:30.530: E/AndroidRuntime(1251): at dalvik.system.NativeStart.main(Native Method)
02-21 15:01:30.530: E/AndroidRuntime(1251): Caused by: java.lang.NullPointerException
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.content.ContextWrapper.getContentResolver(ContextWrapper.java:99)
02-21 15:01:30.530: E/AndroidRuntime(1251): at com.example.testouille.MainActivity.<init>(MainActivity.java:152)
02-21 15:01:30.530: E/AndroidRuntime(1251): at java.lang.Class.newInstanceImpl(Native Method)
02-21 15:01:30.530: E/AndroidRuntime(1251): at java.lang.Class.newInstance(Class.java:1208)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
02-21 15:01:30.530: E/AndroidRuntime(1251): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112)
02-21 15:01:30.530: E/AndroidRuntime(1251): ... 11 more
02-21 15:01:33.890: I/Process(1251): Sending signal. PID: 1251 SIG: 9
我是 Android 上的 Java 新手 ^^ 。 非常感谢 ， 大卫
最佳答案
我知道已经有一段时间了，但是如果您或其他人以这种方式遇到代码问题，我相当确定错误就在您准备好让您的对话框让使用它失败的地方良好的许可响应。
protected Dialog onCreateDialog(int id) {
return new AlertDialog.Builder(this)
因为它在自己的类中并且在类中注释
class MainActivity extends Activity
您不能使用“this”，因为 AlertDialog.Builder 需要上下文，您需要类似以下内容:
protected Dialog onCreateDialog(int id) {
new AlertDialog.Builder(getApplicationContext())
另一种选择是在 MainActivity 中创建一个公共(public)上下文变量，您可以简单地使用它。
class MainActivity extends Activity{
public Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.context = this;
}
然后在创建对话框的地方，您可以使用 MainActivity 中的公共(public)上下文，如下所示:
protected Dialog onCreateDialog(int id) {
new AlertDialog.Builder(context)
关于java - 如何将许可证集成到其 Android 应用程序中？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21940049/