内蔵カメラを使用する Android アプリを作成しています。段階的に構築しているので、最初にカメラのプレビューを確認しました。Jelly Bean フォンでは正常に動作しますが、同じアプリケーションをジンジャーブレッド フォンで実行すると、プレビューの開始に失敗したというエラーで失敗します
詳細はこちら
サーフェイス ビューは xml レイアウトで定義され、任意のサイズです ジェリー ビーンの電話は、通常のカテゴリの画面を備えた Galaxy S3 です ジンジャーブレッド デバイスは、小さなカテゴリの画面を備えた Galaxy Y です
ここにログ出力があります
04-01 23:54:44.117: I/ApplicationPackageManager(15419): cscCountry is not German : INU
04-01 23:54:44.671: D/AndroidRuntime(15419): Shutting down VM
04-01 23:54:44.671: W/dalvikvm(15419): threadid=1: thread exiting with uncaught exception (group=0x40018578)
04-01 23:54:44.703: E/AndroidRuntime(15419): FATAL EXCEPTION: main
04-01 23:54:44.703: E/AndroidRuntime(15419): java.lang.RuntimeException: startPreview failed
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.hardware.Camera.startPreview(Native Method)
04-01 23:54:44.703: E/AndroidRuntime(15419): at com.example.witalk.CameraHandle.surfaceCreated(CameraHandle.java:98)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.SurfaceView.updateWindow(SurfaceView.java:552)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.SurfaceView.dispatchDraw(SurfaceView.java:350)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.drawChild(ViewGroup.java:1644)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.drawChild(ViewGroup.java:1644)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.View.draw(View.java:6883)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.widget.FrameLayout.draw(FrameLayout.java:357)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.drawChild(ViewGroup.java:1644)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.View.draw(View.java:6883)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.widget.FrameLayout.draw(FrameLayout.java:357)
04-01 23:54:44.703: E/AndroidRuntime(15419): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1940)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewRoot.draw(ViewRoot.java:1527)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewRoot.performTraversals(ViewRoot.java:1264)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.view.ViewRoot.handleMessage(ViewRoot.java:1865)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.os.Handler.dispatchMessage(Handler.java:99)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.os.Looper.loop(Looper.java:130)
04-01 23:54:44.703: E/AndroidRuntime(15419): at android.app.ActivityThread.main(ActivityThread.java:3687)
04-01 23:54:44.703: E/AndroidRuntime(15419): at java.lang.reflect.Method.invokeNative(Native Method)
04-01 23:54:44.703: E/AndroidRuntime(15419): at java.lang.reflect.Method.invoke(Method.java:507)
04-01 23:54:44.703: E/AndroidRuntime(15419): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
04-01 23:54:44.703: E/AndroidRuntime(15419): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
04-01 23:54:44.703: E/AndroidRuntime(15419): at dalvik.system.NativeStart.main(Native Method)
そしてここにコードがあります
メインアクティビティ.java
package com.example.witalk;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.SurfaceView;
import android.view.WindowManager;
public class MainActivity extends Activity {
private CameraHandle cameraHandle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SurfaceView surface=(SurfaceView)findViewById(R.id.surfaceView1);
cameraHandle=new CameraHandle(0);
cameraHandle.initializeCamera(getWindowManager().getDefaultDisplay().getRotation());
cameraHandle.setDisplaySurface(surface);
cameraHandle.startPreview();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
protected void onDestroy() {
cameraHandle.stop();
super.onDestroy();
}
}
カメラハンドル.java
package com.example.witalk;
import java.io.IOException;
import android.graphics.ImageFormat;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.PreviewCallback;
import android.util.Log;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.WindowManager;
public class CameraHandle implements Callback, PreviewCallback {
private static Camera camera;
private static SurfaceView surface;
private static byte[] imageBuffer;
private static byte[] imageData;
private static int height,width;
private static Parameters cameraSettings;
private static boolean surfaceReady,cameraReady;
long lastTime;
public CameraHandle(int id )
{
camera=Camera.open(id);
}
public void initializeCamera(int rotation){
cameraSettings=camera.getParameters();
height=cameraSettings.getPreviewSize().height;
width=cameraSettings.getPreviewSize().width;
imageBuffer=new byte[(ImageFormat.getBitsPerPixel(cameraSettings.getPreviewFormat())*width*height)/8];
camera.addCallbackBuffer(imageBuffer);
if(rotation==Surface.ROTATION_0)
camera.setDisplayOrientation(90);
if(rotation==Surface.ROTATION_90)
camera.setDisplayOrientation(0);
if(rotation==Surface.ROTATION_270)
camera.setDisplayOrientation(180);
}
public void setDisplaySurface(SurfaceView surface){
this.surface=surface;
surface.getHolder().addCallback(this);
}
public void startPreview(){
if(surfaceReady){
try {
Log.d("CameraHandler", "camera from start Preview");
camera.setPreviewDisplay(surface.getHolder());
camera.setPreviewCallbackWithBuffer(this);
} catch (IOException e) {}
camera.startPreview();
}
else
cameraReady=true;
}
public static byte[] getData(){
return imageData;
}
public void stop(){
if(camera!=null){
camera.stopPreview();
camera.release();}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
camera.setPreviewDisplay(holder);
surfaceReady=true;
if(cameraReady){
camera.startPreview();
camera.setPreviewCallbackWithBuffer(this);
Log.d("CameraBuffer", "camera from surface");
}
} catch (IOException e) {
Log.e("CameraHandler","Something went wrong cannot set preview");
e.printStackTrace();}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
@Override
public void onPreviewFrame(byte[] newData, Camera camera) {
imageData=newData;
camera.addCallbackBuffer(imageBuffer);
}
}