假设，我有三个活动 A、B、C。程序的流程应该是A->B->C->B。我有意图激发采摘颜色的活动（C）。我遇到的问题是 Activity C 被调用
startActivityForResult(i, 1);
我已经覆盖了 Lib 函数
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent it)
{
super.onActivityResult(requestCode, resultCode, it);
//String t;
int r,g,b,a;
r=g=b=a=0;
System.out.println("onActivityResult " + it);
System.out.println("onActivityResult " + resultCode);
System.out.println("onActivityResult " + requestCode);//Intent it = getIntent();
if(resultCode == RESULT_OK && requestCode==1)
{
System.out.println("ColorPickerActivity 3");
r = it.getIntExtra("RED",0);
//it.getIntExtra("RED", r);
System.out.println("ColorPickerActivity R" + r);
g = it.getIntExtra("GREEN", 0);
System.out.println("ColorPickerActivity G" + g);
b = it.getIntExtra("BLUE", 0);
System.out.println("ColorPickerActivity B" + b);
a = it.getIntExtra("ALPHA", 0);
System.out.println("ColorPickerActivity A" + a);
}
System.out.println("ColorPickerActivity A" + graphIndex);
this.r = (float) (r/255); this.g = (float)g/255; this.b = (float)b/255; this.a = (float)a/255;
ChangeColor(this.r, this.g, this.b, this.a);
}`
但是我的活动 C 甚至在它的按钮被点击之前就完成了，因为我已经实现了OnClickListener那个按钮。
showColor.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
System.out.println("Color R G B A " + r + g+ +b + a);
if(colorPickerObject != null)
{
System.out.println("Color R G B A " + r + g +b + a);
r = colorPickerObject.getRed();
g = colorPickerObject.getGreen();
b = colorPickerObject.getBlue();
a = colorPickerObject.getAlpha();
System.out.println("Color R G B A " + r + g +b + a);
setIntent();
}
}
});
功能setIntent()如下
public void setIntent()
{
Intent i = new Intent();
i.putExtra("RED", r);
i.putExtra("GREEN", g);
i.putExtra("BLUE", b);
i.putExtra("ALPHA", a);
setResult(RESULT_OK,i);
System.out.println("Intent" + i );
System.out.println("Intent R" + r );
System.out.println("Intent G" + g );
System.out.println("Intent B" + b );
finish();
}
请帮我看看为什么这个活动 C 没有返回到活动 B。而是它过早地结束给Datanull //onActivityResult并返回resultCode为 -1 LOGS
11-11 10:57:00.535: I/System.out(2476): ColorPickerActivity
11-11 10:57:00.535: I/System.out(2476): ColorPickerActivity 1Intent { cmp=com.example.sample3dchart/com.example.colorpicker.ColorPickerActivity }
11-11 10:57:00.535: I/ActivityManager(391): START u0 {cmp=com.example.sample3dchart/com.example.colorpicker.ColorPickerActivity} from pid 2476
11-11 10:57:00.550: I/System.out(2476): ColorPickerActivity 2
11-11 10:57:00.565: I/System.out(2476): COLORPICKER Activity
11-11 10:57:00.635: D/mali_winsys(2476): new_window_surface returns 0x3000
11-11 10:57:00.800: I/ActivityManager(391): Displayed com.example.sample3dchart/com.example.colorpicker.ColorPickerActivity: +247ms
11-11 10:57:05.205: I/System.out(2476): Color R G B A 0000
11-11 10:57:05.205: I/System.out(2476): Color R G B A 0000
11-11 10:57:05.205: I/System.out(2476): Color R G B A 3625536255
11-11 10:57:05.205: I/System.out(2476): IntentIntent { (has extras) }
11-11 10:57:05.205: I/System.out(2476): Intent R36
11-11 10:57:05.205: I/System.out(2476): Intent G255
11-11 10:57:05.205: I/System.out(2476): Intent B36
11-11 10:57:05.275: D/dalvikvm(391): GC_FOR_ALLOC freed 885K, 25% free 17310K/22824K, paused 58ms, total 58ms
11-11 10:57:05.285: I/System.out(2455): MAIN START CALLED
11-11 10:57:05.300: D/mali_winsys(2455): new_window_surface returns 0x3000
11-11 10:57:05.305: W/InputMethodManagerService(391): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@42a86a68 (uid=10066 pid=2476)
11-11 10:57:05.370: W/BufferQueue(2476): [unnamed-2476-0] cancelBuffer: BufferQueue has been abandoned!
11-11 10:57:05.650: I/ActivityManager(391): No longer want com.android.packageinstaller (pid 2118): empty #17
11-11 10:57:08.930: D/dalvikvm(1213): GC_CONCURRENT freed 405K, 5% free 9052K/9484K, paused 2ms+2ms, total 24ms
11-11 10:57:08.945: D/Finsky(1213): [1] 5.onFinished: Installation state replication succeeded.
也检查这些日志。此处不崩溃但返回活动 A