新增滑动返回功能

SlideBack/.gitignore

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+/build

SlideBack/build.gradle

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+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion rootProject.ext.compileSdkVersion
+    buildToolsVersion rootProject.ext.buildToolsVersion
+    defaultConfig {
+        minSdkVersion rootProject.ext.minSdkVersion
+        targetSdkVersion rootProject.ext.targetSdkVersion
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    provided "com.android.support:appcompat-v7:$rootProject.ext.supportLibraryVersion"
+//    provided 'com.android.support:design:24.2.1'
+}

SlideBack/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in D:\AndroidSdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

SlideBack/src/main/AndroidManifest.xml

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+<manifest package="com.oubowu.slideback"
+          xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <application android:allowBackup="true"
+                 android:label="@string/app_name"
+                 android:supportsRtl="true"
+    >
+
+    </application>
+
+</manifest>

SlideBack/src/main/java/com/oubowu/slideback/ActivityHelper.java

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+package com.oubowu.slideback;
+
+import android.app.Activity;
+import android.app.Application;
+import android.os.Bundle;
+import android.util.Log;
+
+import java.util.Stack;
+
+/**
+ * Created by Oubowu on 2016/9/20 3:28.
+ */
+public class ActivityHelper implements Application.ActivityLifecycleCallbacks {
+
+    private static Stack<Activity> mActivityStack;
+
+    public ActivityHelper() {
+    }
+
+    @Override
+    public void onActivityCreated(Activity activity, Bundle bundle) {
+        if (mActivityStack == null) {
+            mActivityStack = new Stack<>();
+        }
+        mActivityStack.add(activity);
+    }
+
+    @Override
+    public void onActivityStarted(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivityResumed(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivityPaused(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivityStopped(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {
+
+    }
+
+    @Override
+    public void onActivityDestroyed(Activity activity) {
+
+        // Log.e("TAG", "ActivityHelper-销毁: " + activity);
+        mActivityStack.remove(activity);
+
+    }
+
+    public Activity getPreActivity() {
+        if (mActivityStack == null) {
+            return null;
+        }
+        int size = mActivityStack.size();
+        if (size < 2) {
+            return null;
+        }
+        return mActivityStack.elementAt(size - 2);
+    }
+
+    public void finishAllActivity() {
+        if (mActivityStack == null) {
+            return;
+        }
+        for (Activity activity : mActivityStack) {
+            activity.finish();
+        }
+    }
+
+    public void printAllActivity() {
+        if (mActivityStack == null) {
+            return;
+        }
+        for (int i = 0; i < mActivityStack.size(); i++) {
+            Log.e("TAG", "位置" + i + ": " + mActivityStack.get(i));
+        }
+    }
+
+    /**
+     * 强制删掉activity，用于用户快速滑动页面的时候，因为页面还没来得及destroy导致的问题
+     *
+     * @param activity 删掉的activity
+     */
+    void postRemoveActivity(Activity activity) {
+        if (mActivityStack != null) {
+            mActivityStack.remove(activity);
+        }
+    }
+
+}

SlideBack/src/main/java/com/oubowu/slideback/SlideBackHelper.java

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+package com.oubowu.slideback;
+
+import android.app.Activity;
+import android.graphics.drawable.Drawable;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.oubowu.slideback.callbak.OnInternalStateListener;
+import com.oubowu.slideback.callbak.OnSlideListener;
+import com.oubowu.slideback.widget.SlideBackLayout;
+
+/**
+ * Created by Oubowu on 2016/9/22 0022 14:31.
+ */
+// TODO: 2016/9/24 添加了上个页面的布局，如果页面有Toolbar的话其不随屏幕选择而大小变化，永远维持进入时的宽高比
+public class SlideBackHelper {
+
+    public static ViewGroup getDecorView(Activity activity) {
+        return (ViewGroup) activity.getWindow().getDecorView();
+    }
+
+    public static Drawable getDecorViewDrawable(Activity activity) {
+        return getDecorView(activity).getBackground();
+    }
+
+    public static View getContentView(Activity activity) {
+        return getDecorView(activity).getChildAt(0);
+    }
+
+    /**
+     * 附着Activity，实现侧滑
+     *
+     * @param curActivity 当前Activity
+     * @param helper      Activity栈管理类
+     * @param config      参数配置
+     * @param listener    滑动的监听
+     * @return 处理侧滑的布局，提高方法动态设置滑动相关参数
+     */
+    public static SlideBackLayout attach(@NonNull final Activity curActivity, @NonNull final ActivityHelper helper, @Nullable final SlideConfig config, @Nullable final OnSlideListener listener) {
+
+        final ViewGroup decorView = getDecorView(curActivity);
+        final View contentView = decorView.getChildAt(0);
+        decorView.removeViewAt(0);
+
+        View content = contentView.findViewById(android.R.id.content);
+        if (content.getBackground() == null) {
+            content.setBackground(decorView.getBackground());
+        }
+
+        final Activity[] preActivity = {helper.getPreActivity()};
+        final View[] preContentView = {getContentView(preActivity[0])};
+        Drawable preDecorViewDrawable = getDecorViewDrawable(preActivity[0]);
+        content = preContentView[0].findViewById(android.R.id.content);
+        if (content.getBackground() == null) {
+            content.setBackground(preDecorViewDrawable);
+        }
+
+        final SlideBackLayout slideBackLayout;
+        slideBackLayout = new SlideBackLayout(curActivity, contentView, preContentView[0], preDecorViewDrawable, config, new OnInternalStateListener() {
+
+            @Override
+            public void onSlide(float percent) {
+                if (listener != null) {
+                    listener.onSlide(percent);
+                }
+            }
+
+            @Override
+            public void onOpen() {
+                if (listener != null) {
+                    listener.onOpen();
+                }
+            }
+
+            @Override
+            public void onClose(Boolean finishActivity) {
+
+                // finishActivity为true时关闭页面，为false时不关闭页面，为null时为其他地方关闭页面时调用SlideBackLayout.isComingToFinish的回调
+
+                if (listener != null) {
+                    listener.onClose();
+                }
+
+                if ((finishActivity == null || !finishActivity) && listener != null) {
+                    listener.onClose();
+                }
+
+                if (config != null && config.isRotateScreen()) {
+
+                    if (finishActivity != null && finishActivity) {
+                        // remove了preContentView后布局会重新调整，这时候contentView回到原处，所以要设不可见
+                        contentView.setVisibility(View.INVISIBLE);
+                    }
+
+                    if (preActivity[0] != null && preContentView[0].getParent() != getDecorView(preActivity[0])) {
+                        // Log.e("TAG", ((SlideBackLayout) preContentView[0].getParent()).getTestName() + "这里把欠人的布局放回到上个Activity");
+                        preContentView[0].setX(0);
+                        ((ViewGroup) preContentView[0].getParent()).removeView(preContentView[0]);
+                        getDecorView(preActivity[0]).addView(preContentView[0], 0);
+                    }
+                    //else {
+                    // Log.e("TAG", "这个页面你都没加过，还是在上一个那里，你没欠我");
+                    //}
+                }
+
+                if (finishActivity != null && finishActivity) {
+                    curActivity.finish();
+                    curActivity.overridePendingTransition(0, R.anim.anim_out_none);
+                    helper.postRemoveActivity(curActivity);
+                } else if (finishActivity == null) {
+                    helper.postRemoveActivity(curActivity);
+                }
+            }
+
+            @Override
+            public void onCheckPreActivity(SlideBackLayout slideBackLayout) {
+                // Log.e("TAG", "--------------------------------------------------");
+                // helper.printAllActivity();
+                // Log.e("TAG", "--------------------------------------------------");
+                Activity activity = helper.getPreActivity();
+                // Log.e("TAG", "SlideBackHelper-120行-onFocus(): " + preActivity[0] + ";" + activity);
+                if (activity != preActivity[0]) {
+                    // Log.e("TAG", "SlideBackHelper-122行-onFocus(): 上个Activity变了");
+                    preActivity[0] = activity;
+                    preContentView[0] = getContentView(preActivity[0]);
+                    slideBackLayout.updatePreContentView(preContentView[0]);
+                }
+            }
+
+        });
+
+        decorView.addView(slideBackLayout);
+
+        return slideBackLayout;
+    }
+
+
+}