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。

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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;
        }
    }
}

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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();
        }
    }
}

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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>

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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')
}

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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'

}

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项目运行结果如图:

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