JobScheduler / src / com.example.android.jobscheduler /

MainActivity.java

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/*
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 * Copyright 2013 The Android Open Source Project
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.jobscheduler;
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import android.app.Activity;
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import android.app.job.JobInfo;
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import android.app.job.JobParameters;
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import android.app.job.JobScheduler;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.res.Resources;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.os.Messenger;
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import android.text.TextUtils;
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import android.view.View;
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import android.widget.CheckBox;
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import android.widget.EditText;
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import android.widget.RadioButton;
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import android.widget.TextView;
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import android.widget.Toast;
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import com.example.android.jobscheduler.service.TestJobService;
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public class MainActivity extends Activity {
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    private static final String TAG = "MainActivity";
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    public static final int MSG_UNCOLOUR_START = 0;
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    public static final int MSG_UNCOLOUR_STOP = 1;
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    public static final int MSG_SERVICE_OBJ = 2;
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    @Override
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    public void onCreate(Bundle savedInstanceState) {
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        super.onCreate(savedInstanceState);
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        setContentView(R.layout.sample_main);
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        Resources res = getResources();
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        defaultColor = res.getColor(R.color.none_received);
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        startJobColor = res.getColor(R.color.start_received);
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        stopJobColor = res.getColor(R.color.stop_received);
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        // Set up UI.
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        mShowStartView = (TextView) findViewById(R.id.onstart_textview);
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        mShowStopView = (TextView) findViewById(R.id.onstop_textview);
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        mParamsTextView = (TextView) findViewById(R.id.task_params);
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        mDelayEditText = (EditText) findViewById(R.id.delay_time);
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        mDeadlineEditText = (EditText) findViewById(R.id.deadline_time);
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        mWiFiConnectivityRadioButton = (RadioButton) findViewById(R.id.checkbox_unmetered);
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        mAnyConnectivityRadioButton = (RadioButton) findViewById(R.id.checkbox_any);
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        mRequiresChargingCheckBox = (CheckBox) findViewById(R.id.checkbox_charging);
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        mRequiresIdleCheckbox = (CheckBox) findViewById(R.id.checkbox_idle);
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        mServiceComponent = new ComponentName(this, TestJobService.class);
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        // Start service and provide it a way to communicate with us.
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        Intent startServiceIntent = new Intent(this, TestJobService.class);
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        startServiceIntent.putExtra("messenger", new Messenger(mHandler));
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        startService(startServiceIntent);
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    }
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    // UI fields.
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    int defaultColor;
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    int startJobColor;
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    int stopJobColor;
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    private TextView mShowStartView;
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    private TextView mShowStopView;
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    private TextView mParamsTextView;
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    private EditText mDelayEditText;
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    private EditText mDeadlineEditText;
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    private RadioButton mWiFiConnectivityRadioButton;
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    private RadioButton mAnyConnectivityRadioButton;
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    private CheckBox mRequiresChargingCheckBox;
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    private CheckBox mRequiresIdleCheckbox;
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    ComponentName mServiceComponent;
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    /** Service object to interact scheduled jobs. */
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    TestJobService mTestService;
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    private static int kJobId = 0;
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    Handler mHandler = new Handler(/* default looper */) {
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        @Override
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        public void handleMessage(Message msg) {
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            switch (msg.what) {
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                case MSG_UNCOLOUR_START:
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                    mShowStartView.setBackgroundColor(defaultColor);
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                    break;
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                case MSG_UNCOLOUR_STOP:
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                    mShowStopView.setBackgroundColor(defaultColor);
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                    break;
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                case MSG_SERVICE_OBJ:
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                    mTestService = (TestJobService) msg.obj;
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                    mTestService.setUiCallback(MainActivity.this);
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            }
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        }
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    };
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    private boolean ensureTestService() {
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        if (mTestService == null) {
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            Toast.makeText(MainActivity.this, "Service null, never got callback?",
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                    Toast.LENGTH_SHORT).show();
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            return false;
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        }
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        return true;
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    }
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    /**
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     * UI onclick listener to schedule a job. What this job is is defined in
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     * TestJobService#scheduleJob().
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     */
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    public void scheduleJob(View v) {
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        if (!ensureTestService()) {
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            return;
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        }
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        JobInfo.Builder builder = new JobInfo.Builder(kJobId++, mServiceComponent);
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        String delay = mDelayEditText.getText().toString();
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        if (delay != null && !TextUtils.isEmpty(delay)) {
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            builder.setMinimumLatency(Long.valueOf(delay) * 1000);
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        }
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        String deadline = mDeadlineEditText.getText().toString();
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        if (deadline != null && !TextUtils.isEmpty(deadline)) {
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            builder.setOverrideDeadline(Long.valueOf(deadline) * 1000);
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        }
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        boolean requiresUnmetered = mWiFiConnectivityRadioButton.isChecked();
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        boolean requiresAnyConnectivity = mAnyConnectivityRadioButton.isChecked();
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        if (requiresUnmetered) {
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            builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED);
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        } else if (requiresAnyConnectivity) {
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            builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY);
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        }
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        builder.setRequiresDeviceIdle(mRequiresIdleCheckbox.isChecked());
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        builder.setRequiresCharging(mRequiresChargingCheckBox.isChecked());
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        mTestService.scheduleJob(builder.build());
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    }
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    public void cancelAllJobs(View v) {
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        JobScheduler tm =
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                (JobScheduler) getSystemService(Context.JOB_SCHEDULER_SERVICE);
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        tm.cancelAll();
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    }
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    /**
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     * UI onclick listener to call jobFinished() in our service.
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     */
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    public void finishJob(View v) {
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        if (!ensureTestService()) {
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            return;
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        }
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        mTestService.callJobFinished();
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        mParamsTextView.setText("");
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    }
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    /**
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     * Receives callback from the service when a job has landed
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     * on the app. Colours the UI and post a message to
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     * uncolour it after a second.
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     */
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    public void onReceivedStartJob(JobParameters params) {
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        mShowStartView.setBackgroundColor(startJobColor);
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        Message m = Message.obtain(mHandler, MSG_UNCOLOUR_START);
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        mHandler.sendMessageDelayed(m, 1000L); // uncolour in 1 second.
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        mParamsTextView.setText("Executing: " + params.getJobId() + " " + params.getExtras());
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    }
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    /**
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     * Receives callback from the service when a job that
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     * previously landed on the app must stop executing.
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     * Colours the UI and post a message to uncolour it after a
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     * second.
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     */
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    public void onReceivedStopJob() {
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        mShowStopView.setBackgroundColor(stopJobColor);
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        Message m = Message.obtain(mHandler, MSG_UNCOLOUR_STOP);
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        mHandler.sendMessageDelayed(m, 2000L); // uncolour in 1 second.
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        mParamsTextView.setText("");
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    }
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}