CODEWITHSUNDEEP
androidkotlin
Daniel
Daniel

Reputation: 145

application hangs when using TextWatcher

*when the emulator is turned on, it crashes when trying to change parameters

editText.addTextChangedListener(object : TextWatcher {
            override fun afterTextChanged(p0: Editable?) {

                if (editText.text.toString().isEmpty()) {
                    status.text = "error"
                }
            }
            override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
            }

            override fun onTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {

                try { editText2.setText("${editText.toString().toFloat() * 39370}")
                }
                catch (f: NumberFormatException){}
                    status.text = "error"
                editText2.addTextChangedListener(object : TextWatcher {
                    override fun beforeTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {}

                    override fun onTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {
                        try {
                            editText.setText("${editText2.text.toString().toFloat() / 39370}")
                        }catch (e: NumberFormatException){
                            status.text = "error"
                        }
                    }

                    override fun afterTextChanged(editable: Editable) {
                        if(editText2.text.toString().isEmpty()) {
                            status.text = "error"
                        }
                    }
                })
        }
        })
    }

LOGCAT

    2021-08-07 15:14:31.145 552-10994/system_process E/ActivityManager: ANR in com.example.company.myapplication (com.example.company.myapplication/.MainActivity)
    PID: 10958
    Reason: Input dispatching timed out (1a128e0 com.example.company.myapplication/com.example.company.myapplication.MainActivity (server) is not responding. Waited 5000ms for KeyEvent(deviceId=0, source=0x00000301, displayId=-1, action=DOWN, flags=0x00000008, keyCode=67, scanCode=14, metaState=0x00000000, repeatCount=0), policyFlags=0x62000000)
    Parent: com.example.company.myapplication/.MainActivity
    Load: 0.35 / 0.29 / 0.28
    ----- Output from /proc/pressure/memory -----
    some avg10=0.00 avg60=0.00 avg300=0.00 total=5379069
    full avg10=0.00 avg60=0.00 avg300=0.00 total=859915
    ----- End output from /proc/pressure/memory -----
    
    CPU usage from 53152ms to 0ms ago (2021-08-07 12:13:35.741 to 2021-08-07 12:14:28.893):
      2.7% 308/[email protected]: 0% user + 2.7% kernel
      2.3% 384/surfaceflinger: 0% user + 2.2% kernel / faults: 42 minor
      2.2% 330/[email protected]: 0% user + 2.2% kernel
      2.2% 552/system_server: 0.3% user + 1.8% kernel / faults: 4538 minor
      1.1% 9469/com.google.android.inputmethod.latin: 0.1% user + 0.9% kernel / faults: 3447 minor
      0.7% 813/com.android.systemui: 0% user + 0.7% kernel / faults: 87 minor
      0.5% 364/[email protected]: 0% user + 0.5% kernel
      0.1% 483/llkd: 0% user + 0% kernel
      0.3% 1532/com.google.android.gms: 0.1% user + 0.1% kernel / faults: 3361 minor
      0.3% 404/adbd: 0% user + 0.2% kernel / faults: 286 minor
      0.2% 305/android.hardware.audio.service.ranchu: 0% user + 0.2% kernel / faults: 3 minor
      0.2% 169/logd: 0% user + 0.2% kernel / faults: 6 minor
      0.1% 329/[email protected]: 0% user + 0.1% kernel
      0.1% 388/audioserver: 0% user + 0.1% kernel / faults: 3 minor
      0.1% 1261/com.google.android.gms.persistent: 0% user + 0.1% kernel / faults: 482 minor
      0.1% 3154/com.google.android.googlequicksearchbox:search: 0% user + 0.1% kernel / faults: 2413 minor 2 major
      0.1% 10/rcu_preempt: 0% user + 0.1% kernel
      0% 392/logcat: 0% user + 0% kernel
      0% 1156/com.android.phone: 0% user + 0% kernel / faults: 58 minor
      0% 26/ksoftirqd/3: 0% user + 0% kernel
      0% 8960/logcat: 0% user + 0% kernel
      0% 16/ksoftirqd/1: 0% user + 0% kernel
      0% 421/traced_probes: 0% user + 0% kernel / faults: 1 minor
      0% 10421/kworker/u8:0-cfg80211: 0% user + 0% kernel
      0% 10627/kworker/u8:1-phy0: 0% user + 0% kernel
      0% 171/servicemanager: 0% user + 0% kernel
      0% 1077/com.google.android.apps.nexuslauncher: 0% user + 0% kernel / faults: 46 minor
      0% 1/init: 0% user + 0% kernel
      0% 9/ksoftirqd/0: 0% user + 0% kernel
      0% 21/ksoftirqd/2: 0% user + 0% kernel
      0% 170/lmkd: 0% user + 0% kernel
      0% 294/statsd: 0% user + 0% kernel / faults: 5 minor
      0% 296/zygote: 0% user + 0% kernel / faults: 168 minor
      0% 370/[email protected]: 0% user + 0% kernel
      0% 443/iorapd: 0% user + 0% kernel / faults: 26 minor
      0% 454/wificond: 0% user + 0% kernel
      0% 1018/[email protected]: 0% user + 0% kernel
      0% 1056/com.android.networkstack.process: 0% user + 0% kernel / faults: 24 minor
      0% 7971/kworker/3:0-mm_percpu_wq: 0% user + 0% kernel
     +0% 10958/com.example.company.myapplication: 0% user + 0% kernel
     +0% 10983/kworker/0:2-mm_percpu_wq: 0% user + 0% kernel
    8.5% TOTAL: 4.1% user + 4.3% kernel + 0% iowait + 0% softirq
    CPU usage from 20ms to 384ms later (2021-08-07 12:14:28.913 to 2021-08-07 12:14:29.276):
      124% 10958/com.example.company.myapplication: 102% user + 22% kernel / faults: 1789 minor
        97% 10958/y.myapplication: 97% user + 0% kernel
        26% 10972/HeapTaskDaemon: 4.4% user + 22% kernel
      33% 552/system_server: 0% user + 33% kernel / faults: 281 minor
        29% 10994/AnrConsumer: 0% user + 29% kernel
      3.1% 308/[email protected]: 0% user + 3.1% kernel
        3.1% 1328/[email protected]: 0% user + 3.1% kernel
2021-08-07 15:14:31.145 552-10994/system_process E/ActivityManager:   3.1% 330/[email protected]: 0% user + 3.1% kernel
        3.1% 359/: 0% user + 3.1% kernel
    44% TOTAL: 23% user + 21% kernel

Upvotes: 0

Views: 259

Answers (2)

cactustictacs
cactustictacs

Reputation: 19622

You're getting an Application Not Responding crash, which means your code is blocking and taking too long to do something. It can be a sign you're in a neverending loop, which is probably what's happening here.

You're setting two TextWatchers here, one on editText and one on editText2. The onTextChanged callback fires when... the text changes obviously! When the text changes in editText, that method runs and does this:

editText2.setText("${editText.toString().toFloat() * 39370}")

It's setting the text on editText2. So its onTextChanged fires, and does this:

editText.setText("${editText2.text.toString().toFloat() / 39370}")

See the problem here? Each time the text changes in one, it changes the text in the other, which changes the text in the first one again, which changes... you get the idea. It never ends, and your app hangs

Upvotes: 0

Rinkal Patel
Rinkal Patel

Reputation: 156

   edittask.addTextChangedListener(object : TextWatcher {
        override fun beforeTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {

        }
        override fun onTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {
            val inputText: String = edittask.getText().toString()
            if (inputText.length > 0) {
                colordot.setText(Html.fromHtml("•"))
            } else {
                layout.setVisibility(View.GONE)
                addtask.setBackgroundTintList(ColorStateList.valueOf(resources.getColor(R.color.gray)))
            }
        }

        override fun afterTextChanged(editable: Editable) {
            val inputText: String = edittask.getText().toString()
            if (inputText.length > 0) {
                addtask.setEnabled(true)
                addtask.setBackgroundTintList(ColorStateList.valueOf(resources.getColor(R.color.bg)))
            } else {
                addtask.setEnabled(false)
            }
        }
    })

Upvotes: 1

Related Questions