1 /* 2 * Copyright (C) 2025 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.perfetto.sdk; 18 19 import android.annotation.SuppressLint; 20 import android.os.Bundle; 21 import android.text.format.Formatter; 22 import android.util.Log; 23 import android.widget.TextView; 24 import android.app.Activity; 25 26 import java.io.File; 27 28 @SuppressLint("SetTextI18n") 29 public class MainActivity extends Activity { 30 31 private static final String TAG = MainActivity.class.getSimpleName(); 32 33 @Override onCreate(Bundle savedInstanceState)34 protected void onCreate(Bundle savedInstanceState) { 35 super.onCreate(savedInstanceState); 36 setContentView(R.layout.activity_main); 37 38 File perfettoOutput = new File(getFilesDir(), "from_java_example.pftrace"); 39 String perfettoOutputPath = perfettoOutput.getAbsolutePath(); 40 Log.i(TAG, "perfettoOutputPath: " + perfettoOutputPath); 41 42 TextView tv = (TextView) findViewById(R.id.sample_text); 43 int perfettoResult = PerfettoExampleWrapper.doRunPerfettoMain(perfettoOutputPath); 44 45 String outputFileSize = Formatter.formatShortFileSize(this, perfettoOutput.length()); 46 47 String message = "Perfetto result (expected result: 0): " + perfettoResult 48 + ", output file size (expected size ~1.3kB): " + outputFileSize + "."; 49 Log.i(TAG, message); 50 tv.setText(message); 51 } 52 53 } 54