Tutorial Android Force Close Exception Handler

In software development, we must be faced some of errors. One of the error is force close. There are much causes of force close :

• The value of attribute is null
• The activity hasn't defined in AndroidManifest.xml
• etc

If your application is force close, it will appears a popup unfortunately your app has stopped working.

But this tutorial will handle it. By this tutorial, if your application face an error force close, it won't show a popup nfortunately your app has stopped working. , but the application will open an activity that you chosen.

Maybe the main process like the following :

If Activity B is force close, then go to the MainActivity

PREPARATION

Create 2 java classes :

1. ForceCloseException.java
2. ForceCloseDebugge

Now modify ForceCloseException.java, so look likes the following code :

	package com.putuguna.forceclosehandling;
	import android.app.Activity;
	import android.content.Intent;
	import android.os.Build;
	import java.io.PrintWriter;
	import java.io.StringWriter;
	/**
	* Created by putuguna on 26/10/16.
	*/
	public class ForceCloseException implements java.lang.Thread.UncaughtExceptionHandler {
	private final Activity myContext;
	public ForceCloseException(Activity context) {
	myContext = context;
	}
	public void uncaughtException(Thread thread, Throwable exception) {
	StringWriter stackTrace = new StringWriter();
	exception.printStackTrace(new PrintWriter(stackTrace));
	StringBuilder errorReport = new StringBuilder();
	System.out.println("*****CAUSE OF ERROR*****\n\n");
	System.out.println("FORCE CLOSE CAUSED : " + stackTrace.toString());
	System.out.println("**** DEVICE INFORMATION ***\n\n" +
	"Brand : " + Build.BRAND + "\n" +
	"Device : " + Build.DEVICE + "\n" +
	"Model : " + Build.MODEL + "\n" +
	"ID : " + Build.ID + "\n" +
	"Product : " + Build.PRODUCT + "\n" +
	"SDK : " + Build.VERSION.SDK + "\n" +
	"Release : " + Build.VERSION.RELEASE + "\n" +
	"Incremental : " + Build.VERSION.INCREMENTAL + "/n");
	Intent intent = new Intent(myContext, myContext.getClass());
	intent.putExtra("bugs", stackTrace.toString());
	myContext.startActivity(intent);
	myContext.finish();
	android.os.Process.killProcess(android.os.Process.myPid());
	System.exit(10);
	}
	}

view raw ForceCloseException.java hosted with ❤ by GitHub

Take a look at the code above, exactly this code :

Intent intent = new Intent(myContext, myContext.getClass());

you can change myContext.getClass() with activity that you wanna open if force close happens. myContext.getClass() is current activity.

Modify ForceCloseDebugger.java, so look likes the following code :

	package com.putuguna.forceclosehandling;
	import android.app.Activity;
	/**
	* Created by putuguna on 26/10/16.
	*/
	public class ForceCloseDebugger {
	public static void handle(Activity context){
	if (!BuildConfig.BUILD_TYPE.equalsIgnoreCase("debug")) {
	Thread.setDefaultUncaughtExceptionHandler(new ForceCloseException(context));
	String errorCaused = context.getIntent().getStringExtra("bugs");
	System.out.println("FORCE CLOSE CAUSED BY : " + errorCaused);
	}else{
	Thread.setDefaultUncaughtExceptionHandler(new ForceCloseException(context));
	String errorCaused = context.getIntent().getStringExtra("bugs");
	System.out.println("FORCE CLOSE CAUSED BY : " + errorCaused);
	}
	}
	}

view raw ForceCloseDebugger.java hosted with ❤ by GitHub

ForceCloseDebugger.java help you to see the causes of the error in your Android Studio's logcat.

USAGE

Put ForceCloseDebugger.handle(this); in onCreate() in your activity

For example how the usage :

	package com.putuguna.forceclosehandling;
	import android.os.Bundle;
	import android.support.v7.app.AppCompatActivity;
	import android.view.View;
	import android.widget.Button;
	import android.widget.Toast;
	/**
	* Created by putuguna on 26/10/16.
	*/
	public class SecondActivity extends AppCompatActivity {
	private Button btnForceCLose;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_force_close);
	ForceCloseDebugger.handle(this);
	}
	}

view raw Usage.java hosted with ❤ by GitHub

That's all.