2nd day Life cycle

AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.lambda.imageviewer">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity
+            android:name=".activity_detail"
+            android:label="@string/title_activity_detail"
+            android:theme="@style/AppTheme.NoActionBar"></activity>
+        <activity
+            android:name=".MainActivity"
+            android:label="MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".FullscreenActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

FullscreenActivity.java

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+package com.lambda.imageviewer;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.net.Uri;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.os.Handler;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.View;
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.Gravity;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.content.Intent;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+
+/**
+ * An example full-screen activity that shows and hides the system UI (i.e.
+ * status bar and navigation/system bar) with user interaction.
+ */
+public class FullscreenActivity extends AppCompatActivity {
+ //   public static final int REQUEST_CODE = REQUEST_CODE;
+    /**
+     * Whether or not the system UI should be auto-hidden after
+     * {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
+     */
+    private int mTransitionCount;   // 遷移した回数
+    private static final boolean AUTO_HIDE = true;
+
+    /**
+     * If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
+     * user interaction before hiding the system UI.
+     */
+    private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
+
+    /**
+     * Some older devices needs a small delay between UI widget updates
+     * and a change of the status and navigation bar.
+     */
+    private static final int UI_ANIMATION_DELAY = 300;
+    private final Handler mHideHandler = new Handler();
+    private View mContentView;
+    private final Runnable mHidePart2Runnable = new Runnable() {
+        @SuppressLint("InlinedApi")
+        @Override
+        public void run() {
+            // Delayed removal of status and navigation bar
+
+            // Note that some of these constants are new as of API 16 (Jelly Bean)
+            // and API 19 (KitKat). It is safe to use them, as they are inlined
+            // at compile-time and do nothing on earlier devices.
+            mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
+                    | View.SYSTEM_UI_FLAG_FULLSCREEN
+                    | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
+        }
+    };
+    private View mControlsView;
+    private final Runnable mShowPart2Runnable = new Runnable() {
+        @Override
+        public void run() {
+            // Delayed display of UI elements
+            ActionBar actionBar = getSupportActionBar();
+            if (actionBar != null) {
+                actionBar.show();
+            }
+            mControlsView.setVisibility(View.VISIBLE);
+        }
+    };
+    private boolean mVisible;
+    private final Runnable mHideRunnable = new Runnable() {
+        @Override
+        public void run() {
+            hide();
+        }
+    };
+    /**
+     * Touch listener to use for in-layout UI controls to delay hiding the
+     * system UI. This is to prevent the jarring behavior of controls going away
+     * while interacting with activity UI.
+     */
+    private final View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
+        @Override
+        public boolean onTouch(View view, MotionEvent motionEvent) {
+            if (AUTO_HIDE) {
+                delayedHide(AUTO_HIDE_DELAY_MILLIS);
+            }
+            return false;
+        }
+    };
+
+    @Override
+
+    protected void onStart() {
+
+        super.onStart();
+
+        Log.i("ActivityLifecycle", getLocalClassName() + " - onStart");
+        getIntent();
+
+
+    }
+
+
+    @Override
+
+    protected void onResume() {
+
+        super.onResume();
+
+        Log.i("ActivityLifecycle", getLocalClassName() + " - onResume");
+
+    }
+
+
+    // user interacting with app
+
+
+    @Override
+
+    protected void onPause() {
+
+        super.onPause();
+
+        Log.i("ActivityLifecycle", getLocalClassName() + " - onPause");
+
+    }
+
+
+    @Override
+
+    protected void onStop() {
+
+        super.onStop();
+
+        Log.i("ActivityLifecycle", getLocalClassName() + " - onStop");
+
+    }
+
+
+    @Override
+
+    protected void onDestroy() {
+
+        super.onDestroy();
+
+        Log.i("ActivityLifecycle", getLocalClassName() + " - onDestroy");
+
+    }
+
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Log.i("ActivityLifecycle", getLocalClassName() + " - onCreate");
+        setContentView(R.layout.activity_fullscreen2);
+
+        mVisible = true;
+        mControlsView = findViewById(R.id.fullscreen_content_controls);
+        mContentView = findViewById(R.id.fullscreen_content);
+
+
+        Bundle extras =getIntent().getExtras();
+       if(extras!=null) {
+           TextView tv = findViewById(R.id.fullscreen_content);
+
+           String stringNew = extras.getString("STRING_I_NEED");
+
+           tv.setText(stringNew);
+           ImageView iv=findViewById(R.id.fullscreen_image);
+           iv.setImageURI(Uri.parse(stringNew));
+       }
+
+
+
+        // Set up the user interaction to manually show or hide the system UI.
+        mContentView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+
+                ProcessToGoback();
+
+            }
+        });
+
+
+        // Upon interacting with UI controls, delay any scheduled hide()
+        // operations to prevent the jarring behavior of controls going away
+        // while interacting with the UI.
+        findViewById(R.id.dummy_button).setOnTouchListener(mDelayHideTouchListener);
+    }
+
+    @Override
+    public void onBackPressed()
+    {
+        // do stuff
+        super.onBackPressed();
+        ProcessToGoback();
+
+
+    }
+
+
+
+    @Override
+    protected void onPostCreate(Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+
+        // Trigger the initial hide() shortly after the activity has been
+        // created, to briefly hint to the user that UI controls
+        // are available.
+        delayedHide(100);
+    }
+
+    private void toggle() {
+        if (mVisible) {
+            hide();
+        } else {
+            show();
+        }
+    }
+
+    private void hide() {
+        // Hide UI first
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.hide();
+        }
+        mControlsView.setVisibility(View.GONE);
+        mVisible = false;
+
+        // Schedule a runnable to remove the status and navigation bar after a delay
+        mHideHandler.removeCallbacks(mShowPart2Runnable);
+        mHideHandler.postDelayed(mHidePart2Runnable, UI_ANIMATION_DELAY);
+    }
+
+    @SuppressLint("InlinedApi")
+    private void show() {
+        // Show the system bar
+        mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
+        mVisible = true;
+
+        // Schedule a runnable to display UI elements after a delay
+        mHideHandler.removeCallbacks(mHidePart2Runnable);
+        mHideHandler.postDelayed(mShowPart2Runnable, UI_ANIMATION_DELAY);
+    }
+
+    /**
+     * Schedules a call to hide() in delay milliseconds, canceling any
+     * previously scheduled calls.
+     */
+    private void delayedHide(int delayMillis) {
+        mHideHandler.removeCallbacks(mHideRunnable);
+        mHideHandler.postDelayed(mHideRunnable, delayMillis);
+    }
+
+    private void ProcessToGoback(){
+
+        // Intent のインスタンスを取得する
+        Intent intent = new Intent(getApplicationContext(), MainActivity.class);
+        // 渡したいデータとキーを指定する
+        intent.putExtra("COMING_BACK","I am back");
+        // 遷移先の画面を呼び出す
+        startActivity(intent);
+
+
+    }
+}
+
+
+
+
+
+
+
+

ImageData.java

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+package com.lambda.imageviewer;
+
+import android.net.Uri;
+import android.widget.TextView;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+import java.io.Serializable;
+
+class ImageData implements Serializable {
+    private String stringUri;
+    private TextView tV;
+    private int index;
+    ImageData(String stringUri, int index){
+        this.stringUri = stringUri;
+        this.index=index;
+
+
+    }
+
+    public void setIndex(int index){
+        this.index=index;
+
+    }
+
+    public int getIndex(){
+        return this.index;
+    }
+
+    public String getStringUri() {
+        return stringUri;
+    }
+
+    public void setStringUri(String stringUri) {
+        this.stringUri = stringUri;
+    }
+
+    public void setUri(Uri uriUri) {
+        this.stringUri=uriUri.toString();
+
+    }
+
+    public String toString(Uri uri) {
+         this.stringUri=uri.toString();
+        return super.toString();
+    }
+
+    public Uri getUri(){
+
+        Uri uriUri=Uri.parse(this.stringUri);
+
+        return uriUri;
+    }
+
+
+}