android全局的異常捕獲

android異常捕獲已經很普遍，我們捕獲發佈前沒有測試出的問題，發送到後臺，以便於更好的優化APP。

public class CrashHandler implements Thread.UncaughtExceptionHandler {

    public static CrashHandler instance;
    private Context mContext;

    private CrashHandler() {
    }

    public static synchronized CrashHandler getInstance() {
        if (instance == null) {
            instance = new CrashHandler();
        }
        return instance;
    }

    public CrashHandler build(Context context) {
        this.mContext = context;
        return instance;
    }

    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        ex.printStackTrace();
        StringBuffer err = new StringBuffer();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        err.append("\tat ");
        err.append(format.format(new Date(System.currentTimeMillis())));
        err.append("\tat ");
        err.append("app_version:" + getAppVersion());
        err.append("\tat ");
        err.append(ex.toString());
        err.append("<==>\n");

        StackTraceElement[] stack = ex.getStackTrace();
        if (stack != null) {
            for (int i = 0; i < stack.length; i++) {
                err.append("");
                err.append("\tat ");
                err.append(stack[i].toString());
                err.append("\n");
            }
        }
        // 在此可以把用戶手機的一些信息以及異常信息捕獲並上傳,也可以使用UMeng，UMeng的統計分析在這方面有api接口來調用，

        System.out.println(err.toString());
        android.os.Process.killProcess(android.os.Process.myPid());

    }
}

在application中使用

public class CrashApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        CrashHandler crashHandler = CrashHandler.getInstance().build(getApplicationContext());
        Thread.setDefaultUncaughtExceptionHandler(crashHandler);
    }
}

在manifest中註冊這個CrashApplication

<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:name=".application.CrashApplication"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".view.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

友盟的錯誤分析