我创建了一个按钮，并在该按钮上使用了setOnClickListner（）方法。但是当我尝试运行并单击按钮时，它不起作用。
package com.example.administrator.sportsspeaker;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
import com.parse.ParseException;
import com.parse.ParseInstallation;
import com.parse.ParseObject;
import com.parse.SaveCallback;
public class MainActivity extends AppCompatActivity {
private TextView textViewKickSpeed,textViewKickPower;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textViewKickSpeed = findViewById(R.id.textKickSpeed);
textViewKickPower = findViewById(R.id.textKickPower);
button = findViewById(R.id.submitbutton);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("working","");
// ParseObject kickBoxing = new ParseObject("KickBoxing");
// kickBoxing.put("KickSpeed",""+textViewKickSpeed.getText());
// kickBoxing.put("KickPower",""+textViewKickPower.getText());
// kickBoxing.saveInBackground(new SaveCallback() {
// @Override
// public void done(ParseException e) {
// if(e == null){
//
// Toast.makeText(MainActivity.this,"Successfully uploaded ",Toast.LENGTH_LONG)
// .show();
// }
// }
// });
}
});
}
}
XML代码：
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent"
tools:context=".MainActivity">
<EditText
android:id="@+id/textKickSpeed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:ems="10"
android:hint="kickSpeed"
android:inputType="text|number"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/textKickPower"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:ems="10"
android:hint="kickpower"
android:inputType="number"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textKickSpeed" />
<Button
android:id="@+id/submitbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:text="submit"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textKickPower" />
</android.support.constraint.ConstraintLayout>
错误代码：
2018-12-31 19:52:20.065 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:52:20.404 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:52:20.742 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:52:21.024 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:52:21.437 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:52:21.773 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:52:22.161 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:43.315 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:43.544 4605-4630/com.example.administrator.sportsspeaker E/EGL_emulation: tid 4630: eglSurfaceAttrib(1354): error 0x3009 (EGL_BAD_MATCH)
2018-12-31 19:53:43.604 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:43.887 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:44.180 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:44.525 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:44.906 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:45.254 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:45.633 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 19:53:45.960 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:11:11.549 521-551/system_process E/BluetoothAdapter: Bluetooth binder is null
2018-12-31 20:14:31.072 521-551/system_process E/BluetoothAdapter: Bluetooth binder is null
2018-12-31 20:15:10.026 320-342/? E/BandwidthController: Updating quota globalAlert failed (Status[code: 2, msg: "[No such file or directory] : fopen("/proc/net/xt_quota/globalAlert", "we") failed"])
2018-12-31 20:18:37.550 521-551/system_process E/BluetoothAdapter: Bluetooth binder is null
2018-12-31 20:18:37.578 424-441/? E/OMXNodeInstance: setConfig(0xf192c960:google.vorbis.decoder, ConfigPriority(0x6f800002)) ERROR: Undefined(0x80001001)
2018-12-31 20:18:37.579 424-441/? E/OMXNodeInstance: getConfig(0xf192c960:google.vorbis.decoder, ConfigAndroidVendorExtension(0x6f100004)) ERROR: Undefined(0x80001001)
2018-12-31 20:18:37.905 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:38.223 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:38.495 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:38.822 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:39.165 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:39.487 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:39.784 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:40.052 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:40.389 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:40.723 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:41.048 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:18:41.315 379-405/? E/AudioStreamOutSink: Error while writing data to HAL: -61
2018-12-31 20:32:59.553 521-551/system_process E/BluetoothAdapter: Bluetooth binder is null
答案 0 :(得分：1)
从您的代码中，我可以看到您已使用Log.i()打印了信息日志，但是从您的日志中可以清楚地看到，您仅在 logcat Error 日志>。
您可以将日志视图类型在 logcat 中更改为信息，或将日志打印更改为Log.e()。
您也没有将任何日志消息放入日志打印中，这不是强制性的，但很有帮助。您在方法“工作” 中编写的第一部分不是消息，而只是标签。消息可以这样写：
Log.i("working", "your log message here");
答案 1 :(得分：0)
代替使用
Log.i("working","");
尝试
Toast.makeText(MainActivity.this,"Button Pressed ",Toast.LENGTH_SHORT).show();
这样，您不必依赖日志。
我知道这不能回答您的问题，但是将来可以帮助您进行调试
关于回答您的问题，请尝试在生命周期中稍后设置点击侦听器，例如在onStart（）中