ClockBackActivity.java

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The file containing the source code shown below is located in the corresponding directory in <sdk>/samples/android-<version>/...

/*
 * Copyright (C) 2011 The Android开源工程
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.accessibility;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.provider.Settings;
import android.view.View;
import android.widget.ImageButton;

import com.example.android.apis.R;

/**
 * This is the entry activity for a sample that demonstrates how to implement an
 * {@link android.accessibilityservice.AccessibilityService}.
 */
public class ClockBackActivity extends Activity {

    /** An intent for launching the system settings. */
    private static final Intent sSettingsIntent =
        new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);

    /**
     * {@inheritDoc}
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.accessibility_service);

        // Add a shortcut to the accessibility settings.
        ImageButton button = (ImageButton) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(sSettingsIntent);
            }
        });
    }
}