實現一個簡單的截圖功能以及給圖片添加水印的功能,直接上代碼!
Android截圖以及加水印Demo下載地址:
免費下載地址在 http://linux.linuxidc.com/
用戶名與密碼都是www.linuxidc.com
具體下載目錄在 /pub/Android源碼集錦/2011年/10月/Android截圖以及加水印Demo/
一、代碼實現
- import android.app.Activity;
- import android.graphics.Bitmap;
- import android.graphics.Canvas;
- import android.graphics.Color;
- import android.graphics.Paint;
- import android.graphics.Typeface;
- import android.graphics.Bitmap.Config;
- import android.os.Bundle;
- import android.text.format.Time;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.ImageView;
-
- public class GetAppThumbnailActivity extends Activity {
- private Button btnThum;
- private ImageView imgThum;
- private ImageView imgSource;
-
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- setupViews();
- }
-
- private void setupViews() {
- btnThum = (Button) findViewById(R.id.getThum);
- imgThum = (ImageView) findViewById(R.id.setThum);
- imgSource = (ImageView) findViewById(R.id.source);
-
- btnThum.setOnClickListener(new OnClickListener() {
-
- @Override
- public void onClick(View v) {
- Bitmap bitmap = getViewBitmap(imgSource);
- Bitmap bitmap1 = createBitmap(bitmap, "haha哈哈");
- if (bitmap1 != null) {
- imgThum.setImageBitmap(bitmap1);
- }
- }
- });
- }
-
- /**
- * Draw the view into a bitmap.
- */
- private Bitmap getViewBitmap(View v) {
- v.clearFocus();
- v.setPressed(false);
-
- boolean willNotCache = v.willNotCacheDrawing();
- v.setWillNotCacheDrawing(false);
-
- // Reset the drawing cache background color to fully transparent
- // for the duration of this operation
- int color = v.getDrawingCacheBackgroundColor();
- v.setDrawingCacheBackgroundColor(0);
-
- if (color != 0) {
- v.destroyDrawingCache();
- }
- v.buildDrawingCache();
- Bitmap cacheBitmap = v.getDrawingCache();
- if (cacheBitmap == null) {
- return null;
- }
-
- Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);
-
- // Restore the view
- v.destroyDrawingCache();
- v.setWillNotCacheDrawing(willNotCache);
- v.setDrawingCacheBackgroundColor(color);
-
- return bitmap;
- }
-
- // 給圖片添加水印
- private Bitmap createBitmap(Bitmap src, String str) {
- Time t = new Time();
- t.setToNow();
- int w = src.getWidth();
- int h = src.getHeight();
- String mstrTitle = "截圖時間:"+t.hour + ":" + t.minute + ":" + t.second;
- Bitmap bmpTemp = Bitmap.createBitmap(w, h, Config.ARGB_8888);
- Canvas canvas = new Canvas(bmpTemp);
- Paint p = new Paint();
- String familyName = "宋體";
- Typeface font = Typeface.create(familyName, Typeface.BOLD);
- p.setColor(Color.BLUE);
- p.setTypeface(font);
- p.setTextSize(22);
- canvas.drawBitmap(src, 0, 0, p);
- canvas.drawText(mstrTitle, 0, 20, p);
- canvas.save(Canvas.ALL_SAVE_FLAG);
- canvas.restore();
- return bmpTemp;
- }
-
- }
- import android.app.Activity;
- import android.graphics.Bitmap;
- import android.graphics.Canvas;
- import android.graphics.Color;
- import android.graphics.Paint;
- import android.graphics.Typeface;
- import android.graphics.Bitmap.Config;
- import android.os.Bundle;
- import android.text.format.Time;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.ImageView;
-
- public class GetAppThumbnailActivity extends Activity {
- private Button btnThum;
- private ImageView imgThum;
- private ImageView imgSource;
-
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- setupViews();
- }
-
- private void setupViews() {
- btnThum = (Button) findViewById(R.id.getThum);
- imgThum = (ImageView) findViewById(R.id.setThum);
- imgSource = (ImageView) findViewById(R.id.source);
-
- btnThum.setOnClickListener(new OnClickListener() {
-
- @Override
- public void onClick(View v) {
- Bitmap bitmap = getViewBitmap(imgSource);
- Bitmap bitmap1 = createBitmap(bitmap, "haha哈哈");
- if (bitmap1 != null) {
- imgThum.setImageBitmap(bitmap1);
- }
- }
- });
- }
-
- /**
- * Draw the view into a bitmap.
- */
- private Bitmap getViewBitmap(View v) {
- v.clearFocus();
- v.setPressed(false);
-
- boolean willNotCache = v.willNotCacheDrawing();
- v.setWillNotCacheDrawing(false);
-
- // Reset the drawing cache background color to fully transparent
- // for the duration of this operation
- int color = v.getDrawingCacheBackgroundColor();
- v.setDrawingCacheBackgroundColor(0);
-
- if (color != 0) {
- v.destroyDrawingCache();
- }
- v.buildDrawingCache();
- Bitmap cacheBitmap = v.getDrawingCache();
- if (cacheBitmap == null) {
- return null;
- }
-
- Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);
-
- // Restore the view
- v.destroyDrawingCache();
- v.setWillNotCacheDrawing(willNotCache);
- v.setDrawingCacheBackgroundColor(color);
-
- return bitmap;
- }
-
- // 給圖片添加水印
- private Bitmap createBitmap(Bitmap src, String str) {
- Time t = new Time();
- t.setToNow();
- int w = src.getWidth();
- int h = src.getHeight();
- String mstrTitle = "截圖時間:"+t.hour + ":" + t.minute + ":" + t.second;
- Bitmap bmpTemp = Bitmap.createBitmap(w, h, Config.ARGB_8888);
- Canvas canvas = new Canvas(bmpTemp);
- Paint p = new Paint();
- String familyName = "宋體";
- Typeface font = Typeface.create(familyName, Typeface.BOLD);
- p.setColor(Color.BLUE);
- p.setTypeface(font);
- p.setTextSize(22);
- canvas.drawBitmap(src, 0, 0, p);
- canvas.drawText(mstrTitle, 0, 20, p);
- canvas.save(Canvas.ALL_SAVE_FLAG);
- canvas.restore();
- return bmpTemp;
- }
-
- }