Add Multiple Resolutions (MultiRes) sample code.

2009-11-16 15:23:42 -05:00
parent 13dbc2272e
commit d7f64d5338
29 changed files with 310 additions and 0 deletions
--- a/samples/MultiResolution/src/com/example/android/multires/MultiRes.java
+++ b/samples/MultiResolution/src/com/example/android/multires/MultiRes.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * 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.multires;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+public final class MultiRes extends Activity {
+
+    private int mCurrentPhotoIndex = 0;
+    private int[] mPhotoIds = new int[] { R.drawable.sample_0,
+            R.drawable.sample_1, R.drawable.sample_2, R.drawable.sample_3,
+            R.drawable.sample_4, R.drawable.sample_5, R.drawable.sample_6,
+            R.drawable.sample_7 };
+
+    /** Called when the activity is first created. */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.main);
+
+        showPhoto(mCurrentPhotoIndex);
+
+        // Handle clicks on the 'Next' button.
+        Button nextButton = (Button) findViewById(R.id.next_button);
+        nextButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                mCurrentPhotoIndex = (mCurrentPhotoIndex + 1)
+                        % mPhotoIds.length;
+                showPhoto(mCurrentPhotoIndex);
+            }
+        });
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        outState.putInt("photo_index", mCurrentPhotoIndex);
+        super.onSaveInstanceState(outState);
+    }
+
+    @Override
+    protected void onRestoreInstanceState(Bundle savedInstanceState) {
+        mCurrentPhotoIndex = savedInstanceState.getInt("photo_index");
+        showPhoto(mCurrentPhotoIndex);
+        super.onRestoreInstanceState(savedInstanceState);
+    }
+
+    private void showPhoto(int photoIndex) {
+        ImageView imageView = (ImageView) findViewById(R.id.image_view);
+        imageView.setImageResource(mPhotoIds[photoIndex]);
+
+        TextView statusText = (TextView) findViewById(R.id.status_text);
+        statusText.setText(String.format("%d/%d", photoIndex + 1,
+                mPhotoIds.length));
+    }
+}