46 lines
1.6 KiB
Java
46 lines
1.6 KiB
Java
package com.hoho.android.usbserial.examples;
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import android.content.Intent;
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import android.os.Bundle;
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import androidx.fragment.app.FragmentManager;
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import androidx.appcompat.app.AppCompatActivity;
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import androidx.appcompat.widget.Toolbar;
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public class MainActivity extends AppCompatActivity implements FragmentManager.OnBackStackChangedListener {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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Toolbar toolbar = findViewById(R.id.toolbar);
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setSupportActionBar(toolbar);
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getSupportFragmentManager().addOnBackStackChangedListener(this);
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if (savedInstanceState == null)
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getSupportFragmentManager().beginTransaction().add(R.id.fragment, new DevicesFragment(), "devices").commit();
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else
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onBackStackChanged();
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}
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@Override
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public void onBackStackChanged() {
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getSupportActionBar().setDisplayHomeAsUpEnabled(getSupportFragmentManager().getBackStackEntryCount()>0);
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}
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@Override
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public boolean onSupportNavigateUp() {
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onBackPressed();
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return true;
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}
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@Override
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protected void onNewIntent(Intent intent) {
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if(intent.getAction().equals("android.hardware.usb.action.USB_DEVICE_ATTACHED")) {
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TerminalFragment terminal = (TerminalFragment)getSupportFragmentManager().findFragmentByTag("terminal");
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if (terminal != null)
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terminal.status("USB device detected");
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}
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super.onNewIntent(intent);
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}
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}
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