我自己的 Android 应用导致我的 phone 崩溃

Question

我正在尝试学习如何在 Android 上触发通知。该应用程序可在虚拟设备上运行，但当我在我的实际三星 Galaxy S7（Android 版本：8.1.0）上试用它时，每次我按下通知按钮时它都会冻结 phone 并显示一条消息"System UI has stopped" 这让我的 phone 无限期无响应，需要重新启动。

public class MainActivity extends AppCompatActivity {

    String CHANNEL1_ID = "Channel 1 id";
    String CHANNEL1_NAME = "Channel 1";
    String channel1_description = "Channel 1 description";
    String textTitle = "This is a title.";
    String textContent = "Some content.";
    int count = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button button = (Button) findViewById(R.id.button);
        final Context context = this;

        createNotificationChannel();

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                NotificationCompat.Builder builder = new NotificationCompat.Builder(context, CHANNEL1_ID);
                builder.setSmallIcon(R.drawable.notification_image);
                builder.setContentTitle(textTitle);
                builder.setContentText(textContent);
                builder.setPriority(NotificationCompat.PRIORITY_DEFAULT);

                NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);

                // notificationId is a unique int for each notification that you must define
                notificationManager.notify(count, builder.build());

                count++;

                Log.d("TAG " + count, "onClick: ");

            }

        });

    }

    private void createNotificationChannel() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            String name = CHANNEL1_NAME;
            String description = channel1_description;
            int importance = NotificationManager.IMPORTANCE_DEFAULT;
            NotificationChannel channel = new NotificationChannel(CHANNEL1_ID, name, importance);
            channel.setDescription(description);
            NotificationManager notificationManager = getSystemService(NotificationManager.class);
            notificationManager.createNotificationChannel(channel);
        }
    }

}

Answer 1

我所要做的就是将以下内容添加到我的模块级别 build.gradle 实施 "com.android.support:support-compat:29.0.0" 因为我的目标 sdk 版本是 29.

我自己的 Android 应用导致我的 phone 崩溃

My own Android App causes my phone to crash

java

debugging

android

android-notifications