安卓Andriod使用入门(二十一)【视差效果引导页】

如果你明明知道这个故事的结局，你或者选择说出来，或者装作不知道，万不要欲言又止。有时候留给别人的伤害，选择沉默比选择坦白要痛多了。

---

SelectorActivity.java代码:

package siso.slidingt.selector;import android.app.ListActivity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import siso.slidingt.MainActivity;import siso.slidingt.R;public class SelectorActivity extends ListActivity implements AdapterView.OnItemClickListener {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setTitle(R.string.app_name);        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.options, android.R.layout.simple_list_item_1);        setListAdapter(adapter);        getListView().setOnItemClickListener(this);    }    @Override    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {        switch (position) {            case 0:               MainActivity.start(this);                break;            case 1:               MainActivity.start(this);                break;        }    }}

---

MainActivity.java代码:

package siso.slidingt;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.os.Bundle;import android.support.annotation.LayoutRes;import android.support.annotation.NonNull;import android.support.v4.content.ContextCompat;import android.view.View;import android.widget.Toast;import siso.stlib.Direction;import siso.stlib.IndicatorOptions;import siso.stlib.PageOptions;import siso.stlib.TransformItem;import siso.stlib.TutorialFragment;import siso.stlib.TutorialOptions;import siso.stlib.TutorialPageOptionsProvider;public class MainActivity extends Activity implements View.OnClickListener {    private static final int TOTAL_PAGES = 6;    private static final int ACTUAL_PAGES_COUNT = 3;    private int[] mPagesColors;    public static void start(Context context) {        context.startActivity(new Intent(context, MainActivity.class));    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        findViewById(R.id.bRetry).setOnClickListener(this);        mPagesColors = new int[]{                ContextCompat.getColor(this, android.R.color.darker_gray),                ContextCompat.getColor(this, android.R.color.holo_green_dark),                ContextCompat.getColor(this, android.R.color.holo_red_dark),                ContextCompat.getColor(this, android.R.color.holo_blue_dark),                ContextCompat.getColor(this, android.R.color.holo_purple),                ContextCompat.getColor(this, android.R.color.holo_orange_dark),        };        if (savedInstanceState == null) {            replaceTutorialFragment();        }    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.bRetry:                replaceTutorialFragment();                break;        }    }    public void replaceTutorialFragment() {        final IndicatorOptions indicatorOptions = IndicatorOptions.newBuilder(this)                .build();        final TutorialOptions tutorialOptions = TutorialFragment.newTutorialOptionsBuilder(this)                .setUseAutoRemoveTutorialFragment(true)                .setUseInfiniteScroll(true)                .setPagesColors(mPagesColors)                .setPagesCount(TOTAL_PAGES)                .setIndicatorOptions(indicatorOptions)                .setTutorialPageProvider(new TutorialPagesProvider())                .setOnSkipClickListener(new OnSkipClickListener(this))                .build();        final TutorialFragment tutorialFragment = TutorialFragment.newInstance(tutorialOptions);        getFragmentManager()                .beginTransaction()                .replace(R.id.container, tutorialFragment)                .commit();    }    private static final class TutorialPagesProvider implements TutorialPageOptionsProvider {        @NonNull        @Override        public PageOptions provide(int position) {            @LayoutRes int pageLayoutResId;            TransformItem[] tutorialItems;            position %= ACTUAL_PAGES_COUNT;            switch (position) {                case 0: {                    pageLayoutResId = R.layout.fragment_page_first;                    tutorialItems = new TransformItem[]{                            TransformItem.create(R.id.ivFirstImage, Direction.LEFT_TO_RIGHT, 0.20f),                            TransformItem.create(R.id.ivSecondImage, Direction.RIGHT_TO_LEFT, 0.06f),                            TransformItem.create(R.id.ivThirdImage, Direction.LEFT_TO_RIGHT, 0.08f),                            TransformItem.create(R.id.ivFourthImage, Direction.RIGHT_TO_LEFT, 0.1f),                            TransformItem.create(R.id.ivFifthImage, Direction.RIGHT_TO_LEFT, 0.03f),                            TransformItem.create(R.id.ivSixthImage, Direction.RIGHT_TO_LEFT, 0.09f),                            TransformItem.create(R.id.ivSeventhImage, Direction.RIGHT_TO_LEFT, 0.14f),                            TransformItem.create(R.id.ivEighthImage, Direction.RIGHT_TO_LEFT, 0.07f)                    };                    break;                }                case 1: {                    pageLayoutResId = R.layout.fragment_page_third;                    tutorialItems = new TransformItem[]{                            TransformItem.create(R.id.ivFirstImage, Direction.RIGHT_TO_LEFT, 0.20f),                            TransformItem.create(R.id.ivSecondImage, Direction.LEFT_TO_RIGHT, 0.06f),                            TransformItem.create(R.id.ivThirdImage, Direction.RIGHT_TO_LEFT, 0.08f),                            TransformItem.create(R.id.ivFourthImage, Direction.LEFT_TO_RIGHT, 0.1f),                            TransformItem.create(R.id.ivFifthImage, Direction.LEFT_TO_RIGHT, 0.03f),                            TransformItem.create(R.id.ivSixthImage, Direction.LEFT_TO_RIGHT, 0.09f),                            TransformItem.create(R.id.ivSeventhImage, Direction.LEFT_TO_RIGHT, 0.14f)                    };                    break;                }                case 2: {                    pageLayoutResId = R.layout.fragment_page_second;                    tutorialItems = new TransformItem[]{                            TransformItem.create(R.id.ivFirstImage, Direction.RIGHT_TO_LEFT, 0.2f),                            TransformItem.create(R.id.ivSecondImage, Direction.LEFT_TO_RIGHT, 0.06f),                            TransformItem.create(R.id.ivThirdImage, Direction.RIGHT_TO_LEFT, 0.08f),                            TransformItem.create(R.id.ivFourthImage, Direction.LEFT_TO_RIGHT, 0.1f),                            TransformItem.create(R.id.ivFifthImage, Direction.LEFT_TO_RIGHT, 0.03f),                            TransformItem.create(R.id.ivSixthImage, Direction.LEFT_TO_RIGHT, 0.09f),                            TransformItem.create(R.id.ivSeventhImage, Direction.LEFT_TO_RIGHT, 0.14f),                            TransformItem.create(R.id.ivEighthImage, Direction.LEFT_TO_RIGHT, 0.07f)                    };                    break;                }                default: {                    throw new IllegalArgumentException("Unknown position: " + position);                }            }            return PageOptions.create(pageLayoutResId, position, tutorialItems);        }    }    private static final class OnSkipClickListener implements View.OnClickListener {        @NonNull        private final Context mContext;        OnSkipClickListener(@NonNull Context context) {            mContext = context.getApplicationContext();        }        @Override        public void onClick(View v) {            Toast.makeText(mContext, "跳过按钮单击了", Toast.LENGTH_SHORT).show();        }    }}

---

AndroidManifest.xml内容:

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="siso.slidingt">    <application        android:allowBackup="true"        android:name=".SampleApplication"        android:icon="@mipmap/s_0_1"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity            android:name=".support.MainActivity"            android:label="@string/st_app_name"/>        <activity            android:name=".MainActivity"            android:label="@string/st_app_name"/>        <activity            android:name=".selector.SelectorActivity"            android:label="@string/st_app_name"            android:theme="@style/AppTheme">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

---

build.gradle

apply plugin: 'com.android.application'android {    compileSdkVersion 23    buildToolsVersion "23.0.1"    defaultConfig {        applicationId "siso.slidingt"        minSdkVersion 22        targetSdkVersion 22        versionCode 1        versionName "1.0"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    testCompile 'junit:junit:4.12'    compile 'com.android.support:appcompat-v7:23.0.1'    debugCompile 'com.squareup.leakcanary:leakcanary-android:1.5'    compile project(path: ':stlib')}

---

项目结构如图:

依赖库项目结构如图:

库项目文件里的build.gradle

apply plugin: 'com.android.library'android {    compileSdkVersion 23    buildToolsVersion "23.0.1"    defaultConfig {        minSdkVersion 22        targetSdkVersion 22        versionCode 1        versionName "1.0"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    testCompile 'junit:junit:4.12'    compile 'com.android.support:appcompat-v7:23.0.1'    compile 'com.android.support:percent:23.0.1'}

---

项目运行结果如图:

---

---